[Tests] Increase QMK test coverage take 2 (#15269)

* Add per-test keymaps

* Add better trace and info logs for failed unit-tests

* Add layer state assertion with tracing message

* Use individual test binaries configuration options

* Add basic qmk functionality tests

* Add tap hold configurations tests

* Add auto shift tests

Co-authored-by: Nick Brassel <nick@tzarc.org>

8 files changed, 776 insertions, 182 deletions

diff --git a/tests/basic/config.h b/tests/basic/config.h
index 99bd62d991..85fa9d691d 100644
--- a/tests/basic/config.h
+++ b/tests/basic/config.h
@@ -16,5 +16,4 @@
 
 #pragma once
 
-#define MATRIX_ROWS 4
-#define MATRIX_COLS 10
+#include "test_common.h"
\ No newline at end of file
diff --git a/tests/basic/keymap.c b/tests/basic/keymap.c
deleted file mode 100644
index 2b5747abb7..0000000000
--- a/tests/basic/keymap.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/* Copyright 2017 Fred Sundvik
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "quantum.h"
-
-// Don't rearrange keys as existing tests might rely on the order
-// Col2, Row 0 has to be KC_NO, because tests rely on it
-
-#define COMBO1 RSFT(LCTL(KC_O))
-
-const uint16_t PROGMEM
-               keymaps[][MATRIX_ROWS][MATRIX_COLS] =
-        {
-            [0] =
-                {
-                    // 0    1      2      3        4        5        6       7            8      9
-                    {KC_A, KC_B, KC_NO, KC_LSFT, KC_RSFT, KC_LCTL, COMBO1, SFT_T(KC_P), M(0), KC_NO},
-                    {KC_EQL, KC_PLUS, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO},
-                    {KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO},
-                    {KC_C, KC_D, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO},
-                },
-};
-
-const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt) {
-    if (record->event.pressed) {
-        switch (id) {
-            case 0:
-                return MACRO(D(LSFT), T(H), U(LSFT), T(E), T(L), T(L), T(O), T(SPACE), W(100), D(LSFT), T(W), U(LSFT), I(10), T(O), T(R), T(L), T(D), D(LSFT), T(1), U(LSFT), END);
-        }
-    }
-    return MACRO_NONE;
-};
diff --git a/tests/basic/rules.mk b/tests/basic/test.mk
index 9fb5d43610..29690d1adf 100644
--- a/tests/basic/rules.mk
+++ b/tests/basic/test.mk
@@ -13,4 +13,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-CUSTOM_MATRIX=yes
+# --------------------------------------------------------------------------------
+# Keep this file, even if it is empty, as a marker that this folder contains tests
+# --------------------------------------------------------------------------------
\ No newline at end of file
diff --git a/tests/basic/test_action_layer.cpp b/tests/basic/test_action_layer.cpp
index d00a0859b9..1b12d13642 100644
--- a/tests/basic/test_action_layer.cpp
+++ b/tests/basic/test_action_layer.cpp
@@ -14,39 +14,54 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "gtest/gtest.h"
+#include "keyboard_report_util.hpp"
 #include "test_common.hpp"
 
 using testing::_;
-using testing::Return;
+using testing::InSequence;
 
 class ActionLayer : public TestFixture {};
 
-// TEST_F(ActionLayer, LayerStateDBG) {
-//     layer_state_set(0);
-// }
-
-// TEST_F(ActionLayer, LayerStateSet) {
-//     layer_state_set(0);
-//     EXPECT_EQ(layer_state, 0);
-//     layer_state_set(0b001100);
-//     EXPECT_EQ(layer_state, 0b001100);
-// }
-
-// TEST_F(ActionLayer, LayerStateIs) {
-//     layer_state_set(0);
-//     EXPECT_EQ(layer_state_is(0), true);
-//     EXPECT_EQ(layer_state_is(1), true);
-//     layer_state_set(1);
-//     EXPECT_EQ(layer_state_is(0), true);
-//     EXPECT_EQ(layer_state_is(1), true);
-//     layer_state_set(2);
-//     EXPECT_EQ(layer_state_is(0), false);
-//     EXPECT_EQ(layer_state_is(1), false);
-//     EXPECT_EQ(layer_state_is(2), true);
-// }
+TEST_F(ActionLayer, LayerStateDBG) {
+    TestDriver driver;
+
+    layer_state_set(0);
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, LayerStateSet) {
+    TestDriver driver;
+
+    layer_state_set(0);
+    EXPECT_EQ(layer_state, 0);
+    layer_state_set(0b001100);
+    EXPECT_EQ(layer_state, 0b001100);
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, LayerStateIs) {
+    TestDriver driver;
+
+    layer_state_set(0);
+    EXPECT_EQ(layer_state_is(0), true);
+    EXPECT_EQ(layer_state_is(1), false);
+    layer_state_set(1);
+    EXPECT_EQ(layer_state_is(0), true);
+    EXPECT_EQ(layer_state_is(1), false);
+    layer_state_set(2);
+    EXPECT_EQ(layer_state_is(0), false);
+    EXPECT_EQ(layer_state_is(1), true);
+    EXPECT_EQ(layer_state_is(2), false);
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
 
 TEST_F(ActionLayer, LayerStateCmp) {
-    uint32_t prev_layer;
+    TestDriver driver;
+    uint32_t   prev_layer;
 
     prev_layer = 0;
     EXPECT_EQ(layer_state_cmp(prev_layer, 0), true);
@@ -60,33 +75,339 @@ TEST_F(ActionLayer, LayerStateCmp) {
     EXPECT_EQ(layer_state_cmp(prev_layer, 0), false);
     EXPECT_EQ(layer_state_cmp(prev_layer, 1), true);
     EXPECT_EQ(layer_state_cmp(prev_layer, 2), false);
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, LayerClear) {
+    TestDriver driver;
+
+    layer_clear();
+    EXPECT_EQ(layer_state, 0);
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, LayerMove) {
+    TestDriver driver;
+
+    layer_move(0);
+    EXPECT_EQ(layer_state, 1);
+    layer_move(3);
+    EXPECT_EQ(layer_state, 0b1000);
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, LayerOn) {
+    TestDriver driver;
+
+    layer_clear();
+    layer_on(1);
+    layer_on(3);
+    layer_on(3);
+    EXPECT_EQ(layer_state, 0b1010);
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, LayerOff) {
+    TestDriver driver;
+
+    layer_clear();
+    layer_on(1);
+    layer_on(3);
+    layer_off(3);
+    layer_off(2);
+    EXPECT_EQ(layer_state, 0b0010);
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, MomentaryLayerDoesNothing) {
+    TestDriver driver;
+    KeymapKey  layer_key = KeymapKey{0, 0, 0, MO(1)};
+
+    set_keymap({layer_key});
+
+    /* Press and release MO, nothing should happen. */
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    layer_key.press();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    layer_key.release();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, MomentaryLayerWithKeypress) {
+    TestDriver driver;
+    KeymapKey  layer_key = KeymapKey{0, 0, 0, MO(1)};
+
+    /* These keys must have the same position in the matrix, only the layer is different. */
+    KeymapKey regular_key = KeymapKey{0, 1, 0, KC_A};
+    set_keymap({layer_key, regular_key, KeymapKey{1, 1, 0, KC_B}});
+
+    /* Press MO. */
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    layer_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Press key on layer 1 */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_B))).Times(1);
+    regular_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release key on layer 1 */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    regular_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release MO */
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    layer_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, ToggleLayerDoesNothing) {
+    GTEST_SKIP() << "TODO: Toggle layer does not activate the expected layer on key press but on release.";
+
+    TestDriver driver;
+    KeymapKey  layer_key = KeymapKey{0, 0, 0, TG(1)};
+
+    set_keymap({layer_key});
+
+    /* Press TG. Layer state should not change as it's applied on release. */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    layer_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release TG. */
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    layer_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, ToggleLayerUpAndDown) {
+    GTEST_SKIP() << "TODO: Toggle layer does not activate the expected layer on key press but on release.";
+
+    TestDriver driver;
+    KeymapKey  toggle_layer_1_on_layer_0 = KeymapKey{0, 0, 0, TG(1)};
+    KeymapKey  toggle_layer_0_on_layer_1 = KeymapKey{1, 1, 0, TG(0)};
+
+    set_keymap({toggle_layer_1_on_layer_0, toggle_layer_0_on_layer_1});
+
+    /* Toggle Layer 1. */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    toggle_layer_1_on_layer_0.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    toggle_layer_1_on_layer_0.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Toggle Layer 0. */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    toggle_layer_0_on_layer_1.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    toggle_layer_0_on_layer_1.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, LayerTapToggleDoesNothing) {
+    GTEST_SKIP() << "TODO: Tap toggle layer does not activate the expected layer on key press.";
+
+    TestDriver driver;
+    KeymapKey  layer_key = KeymapKey{0, 0, 0, TT(1)};
+
+    set_keymap({layer_key});
+
+    /* Press and release TT. */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(0);
+    layer_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(2);
+    layer_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, LayerTapToggleWithKeypress) {
+    GTEST_SKIP() << "TODO: Tap toggle layer does not activate the expected layer on key press.";
+
+    TestDriver driver;
+    KeymapKey  layer_key = KeymapKey{0, 0, 0, TT(1)};
+
+    /* These keys must have the same position in the matrix, only the layer is different. */
+    KeymapKey regular_key = KeymapKey{0, 1, 0, KC_A};
+    set_keymap({layer_key, regular_key, KeymapKey{1, 1, 0, KC_B}});
+
+    /* Press TT. */
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(0);
+    layer_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_B))).Times(1);
+    regular_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    regular_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    layer_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_F(ActionLayer, LayerTapToggleWithToggleWithKeypress) {
+    GTEST_SKIP() << "TODO: Tap toggle layer does not activate the expected layer on key press.";
+
+    TestDriver driver;
+    KeymapKey  layer_key = KeymapKey{0, 0, 0, TT(1)};
+
+    /* These keys must have the same position in the matrix, only the layer is different. */
+    KeymapKey regular_key = KeymapKey{0, 1, 0, KC_A};
+    set_keymap({layer_key, regular_key, KeymapKey{1, 1, 0, KC_B}});
+
+    /* Tap TT five times . */
+    /* TODO: QMK currently sends an empty report even if nothing needs to be reported to the host! */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(9);
+
+    layer_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    layer_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+
+    layer_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    layer_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+
+    layer_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    layer_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+
+    layer_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    layer_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+
+    layer_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    layer_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_B))).Times(1);
+    regular_key.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    regular_key.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
 }
 
-// TEST_F(ActionLayer, LayerClear) {
-//     layer_clear();
-//     EXPECT_EQ(layer_state, 0);
-// }
-
-// TEST_F(ActionLayer, LayerMove) {
-//     layer_move(0);
-//     EXPECT_EQ(layer_state, 1);
-//     layer_move(3);
-//     EXPECT_EQ(layer_state, 0b1000);
-// }
-
-// TEST_F(ActionLayer, LayerOn) {
-//     layer_clear();
-//     layer_on(1);
-//     layer_on(3);
-//     layer_on(3);
-//     EXPECT_EQ(layer_state, 0b1010);
-// }
-
-// TEST_F(ActionLayer, LayerOff) {
-//     layer_clear();
-//     layer_on(1);
-//     layer_on(3);
-//     layer_off(3);
-//     layer_off(2);
-//     EXPECT_EQ(layer_state, 0b1000);
-// }
+TEST_F(ActionLayer, LayerTapReleasedBeforeKeypressReleaseWithModifiers) {
+    GTEST_SKIP() << "TODO: Modifiers are erroneously discarded on layer changes, although a key that introduced the modifier is still held.";
+    TestDriver driver;
+    InSequence s;
+
+    KeymapKey layer_0_key_0 = KeymapKey{0, 0, 0, LT(1, KC_T)};
+    KeymapKey layer_1_key_1 = KeymapKey{1, 1, 0, RALT(KC_9)};
+
+    set_keymap({layer_0_key_0, layer_1_key_1});
+
+    /* Press layer tap and wait for tapping term to switch to layer 1 */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(0);
+    layer_0_key_0.press();
+    idle_for(TAPPING_TERM);
+    EXPECT_TRUE(layer_state_is(0));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Press key with layer 1 mapping, result basically expected
+     * altough more reports are send then necessary. */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_RALT))).Times(1);
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_RALT, KC_9))).Times(1);
+    layer_1_key_1.press();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(1));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release layer tap key, no report is send because key is still held. */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    layer_0_key_0.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Unregister keycode and modifier. */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_RALT))).Times(1);
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    layer_1_key_1.release();
+    run_one_scan_loop();
+    EXPECT_TRUE(layer_state_is(0));
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
diff --git a/tests/basic/test_keypress.cpp b/tests/basic/test_keypress.cpp
index cf839f8c16..1c175c9d56 100644
--- a/tests/basic/test_keypress.cpp
+++ b/tests/basic/test_keypress.cpp
@@ -14,11 +14,11 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "keycode.h"
 #include "test_common.hpp"
 
 using testing::_;
 using testing::InSequence;
-using testing::Return;
 
 class KeyPress : public TestFixture {};
 
@@ -30,96 +30,157 @@ TEST_F(KeyPress, SendKeyboardIsNotCalledWhenNoKeyIsPressed) {
 
 TEST_F(KeyPress, CorrectKeyIsReportedWhenPressed) {
     TestDriver driver;
-    press_key(0, 0);
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_A)));
+    auto       key = KeymapKey(0, 0, 0, KC_A);
+
+    set_keymap({key});
+
+    key.press();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key.report_code)));
     keyboard_task();
-    release_key(0, 0);
+
+    key.release();
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     keyboard_task();
 }
 
+TEST_F(KeyPress, ANonMappedKeyDoesNothing) {
+    TestDriver driver;
+    auto       key = KeymapKey(0, 0, 0, KC_NO);
+
+    set_keymap({key});
+
+    key.press();
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    keyboard_task();
+    keyboard_task();
+}
+
 TEST_F(KeyPress, CorrectKeysAreReportedWhenTwoKeysArePressed) {
     TestDriver driver;
-    press_key(1, 0);
-    press_key(0, 3);
+    auto       key_b = KeymapKey(0, 0, 0, KC_B);
+    auto       key_c = KeymapKey(0, 1, 1, KC_C);
+
+    set_keymap({key_b, key_c});
+
+    key_b.press();
+    key_c.press();
     // Note that QMK only processes one key at a time
     // See issue #1476 for more information
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_B)));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_b.report_code)));
     keyboard_task();
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_B, KC_C)));
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_b.report_code, key_c.report_code)));
     keyboard_task();
-    release_key(1, 0);
-    release_key(0, 3);
+
+    key_b.release();
+    key_c.release();
     // Note that the first key released is the first one in the matrix order
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_C)));
-    keyboard_task();
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_c.report_code)));
     keyboard_task();
-}
 
-TEST_F(KeyPress, ANonMappedKeyDoesNothing) {
-    TestDriver driver;
-    press_key(2, 0);
-    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
-    keyboard_task();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     keyboard_task();
 }
 
 TEST_F(KeyPress, LeftShiftIsReportedCorrectly) {
     TestDriver driver;
-    press_key(3, 0);
-    press_key(0, 0);
+    auto       key_a    = KeymapKey(0, 0, 0, KC_A);
+    auto       key_lsft = KeymapKey(0, 3, 0, KC_LSFT);
+
+    set_keymap({key_a, key_lsft});
+
+    key_lsft.press();
+    key_a.press();
+
     // Unfortunately modifiers are also processed in the wrong order
     // See issue #1476 for more information
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_A)));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_a.report_code)));
     keyboard_task();
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_A, KC_LEFT_SHIFT)));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_a.report_code, key_lsft.report_code)));
     keyboard_task();
-    release_key(0, 0);
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
+
+    key_a.release();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_lsft.report_code)));
     keyboard_task();
-    release_key(3, 0);
+
+    key_lsft.release();
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     keyboard_task();
 }
 
 TEST_F(KeyPress, PressLeftShiftAndControl) {
     TestDriver driver;
-    press_key(3, 0);
-    press_key(5, 0);
+    auto       key_lsft  = KeymapKey(0, 3, 0, KC_LSFT);
+    auto       key_lctrl = KeymapKey(0, 5, 0, KC_LCTRL);
+
+    set_keymap({key_lctrl, key_lsft});
+
+    key_lsft.press();
+    key_lctrl.press();
+
     // Unfortunately modifiers are also processed in the wrong order
     // See issue #1476 for more information
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_lsft.report_code)));
+    keyboard_task();
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_lsft.report_code, key_lctrl.report_code)));
     keyboard_task();
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT, KC_LEFT_CTRL)));
+
+    key_lsft.release();
+    key_lctrl.release();
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_lctrl.report_code)));
+    keyboard_task();
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     keyboard_task();
 }
 
 TEST_F(KeyPress, LeftAndRightShiftCanBePressedAtTheSameTime) {
     TestDriver driver;
-    press_key(3, 0);
-    press_key(4, 0);
+    auto       key_lsft = KeymapKey(0, 3, 0, KC_LSFT);
+    auto       key_rsft = KeymapKey(0, 4, 0, KC_RSFT);
+
+    set_keymap({key_rsft, key_lsft});
+
+    key_lsft.press();
+    key_rsft.press();
     // Unfortunately modifiers are also processed in the wrong order
     // See issue #1476 for more information
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_lsft.report_code)));
     keyboard_task();
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT, KC_RIGHT_SHIFT)));
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_lsft.report_code, key_rsft.report_code)));
+    keyboard_task();
+
+    key_lsft.release();
+    key_rsft.release();
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_rsft.report_code)));
+    keyboard_task();
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     keyboard_task();
 }
 
 TEST_F(KeyPress, RightShiftLeftControlAndCharWithTheSameKey) {
     TestDriver driver;
-    press_key(6, 0);
+    auto       combo_key = KeymapKey(0, 0, 0, RSFT(LCTL(KC_O)));
+
+    set_keymap({combo_key});
+
     // BUG: The press is split into two reports
     // BUG: It reports RSFT instead of LSFT
     // See issue #524 for more information
     // The underlying cause is that we use only one bit to represent the right hand
     // modifiers.
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_RIGHT_SHIFT, KC_RIGHT_CTRL)));
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_RIGHT_SHIFT, KC_RIGHT_CTRL, KC_O)));
+    combo_key.press();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_RSFT, KC_RCTRL)));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_RSFT, KC_RCTRL, KC_O)));
     keyboard_task();
-    release_key(6, 0);
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_RIGHT_SHIFT, KC_RIGHT_CTRL)));
+
+    combo_key.release();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_RSFT, KC_RCTRL)));
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     keyboard_task();
 }
@@ -127,25 +188,29 @@ TEST_F(KeyPress, RightShiftLeftControlAndCharWithTheSameKey) {
 TEST_F(KeyPress, PressPlusEqualReleaseBeforePress) {
     TestDriver driver;
     InSequence s;
+    auto       key_plus = KeymapKey(0, 1, 1, KC_PLUS);
+    auto       key_eql  = KeymapKey(0, 0, 1, KC_EQL);
 
-    press_key(1, 1);  // KC_PLUS
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT, KC_EQUAL)));
+    set_keymap({key_plus, key_eql});
+
+    key_plus.press();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT)));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT, KC_EQL)));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    release_key(1, 1);  // KC_PLUS
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
+    key_plus.release();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT)));
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    press_key(0, 1);  // KC_EQUAL
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_EQUAL)));
+    key_eql.press();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_eql.report_code)));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    release_key(0, 1);  // KC_EQUAL
+    key_eql.release();
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
@@ -154,27 +219,31 @@ TEST_F(KeyPress, PressPlusEqualReleaseBeforePress) {
 TEST_F(KeyPress, PressPlusEqualDontReleaseBeforePress) {
     TestDriver driver;
     InSequence s;
+    auto       key_plus = KeymapKey(0, 1, 1, KC_PLUS);
+    auto       key_eql  = KeymapKey(0, 0, 1, KC_EQL);
 
-    press_key(1, 1);  // KC_PLUS
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT, KC_EQUAL)));
+    set_keymap({key_plus, key_eql});
+
+    key_plus.press();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT)));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT, KC_EQL)));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    press_key(0, 1);  // KC_EQUAL
+    key_eql.press();
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_EQUAL)));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    release_key(1, 1);  // KC_PLUS
-    // BUG: Should really still return KC_EQUAL, but this is fine too
+    key_plus.release();
+    // BUG: Should really still return KC_EQL, but this is fine too
     // It's also called twice for some reason
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(2);
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    release_key(0, 1);  // KC_EQUAL
+    key_eql.release();
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
@@ -183,25 +252,29 @@ TEST_F(KeyPress, PressPlusEqualDontReleaseBeforePress) {
 TEST_F(KeyPress, PressEqualPlusReleaseBeforePress) {
     TestDriver driver;
     InSequence s;
+    auto       key_plus = KeymapKey(0, 1, 1, KC_PLUS);
+    auto       key_eql  = KeymapKey(0, 0, 1, KC_EQL);
 
-    press_key(0, 1);  // KC_EQUAL
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_EQUAL)));
+    set_keymap({key_plus, key_eql});
+
+    key_eql.press();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_EQL)));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    release_key(0, 1);  // KC_EQUAL
+    key_eql.release();
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    press_key(1, 1);  // KC_PLUS
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT, KC_EQUAL)));
+    key_plus.press();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT)));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT, KC_EQL)));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    release_key(1, 1);  // KC_PLUS
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
+    key_plus.release();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT)));
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
@@ -210,13 +283,17 @@ TEST_F(KeyPress, PressEqualPlusReleaseBeforePress) {
 TEST_F(KeyPress, PressEqualPlusDontReleaseBeforePress) {
     TestDriver driver;
     InSequence s;
+    auto       key_plus = KeymapKey(0, 1, 1, KC_PLUS);
+    auto       key_eql  = KeymapKey(0, 0, 1, KC_EQL);
 
-    press_key(0, 1);  // KC_EQUAL
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_EQUAL)));
+    set_keymap({key_plus, key_eql});
+
+    key_eql.press();
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_EQL)));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    press_key(1, 1);  // KC_PLUS
+    key_plus.press();
     // BUG: The sequence is a bit strange, but it works, the end result is that
     // KC_PLUS is sent
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT, KC_EQUAL)));
@@ -225,16 +302,16 @@ TEST_F(KeyPress, PressEqualPlusDontReleaseBeforePress) {
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    release_key(0, 1);  // KC_EQUAL
+    key_eql.release();
     // I guess it's fine to still report shift here
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
 
-    release_key(1, 1);  // KC_PLUS
+    key_plus.release();
     // This report is not needed
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     run_one_scan_loop();
     testing::Mock::VerifyAndClearExpectations(&driver);
-}
+}
\ No newline at end of file
diff --git a/tests/basic/test_macro.cpp b/tests/basic/test_macro.cpp
index 1ac6f473fc..ae2f3b32e3 100644
--- a/tests/basic/test_macro.cpp
+++ b/tests/basic/test_macro.cpp
@@ -24,10 +24,25 @@ class Macro : public TestFixture {};
 
 #define AT_TIME(t) WillOnce(InvokeWithoutArgs([current_time]() { EXPECT_EQ(timer_elapsed32(current_time), t); }))
 
+extern "C" const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt) {
+    if (record->event.pressed) {
+        switch (id) {
+            case 0:
+                return MACRO(D(LSFT), T(H), U(LSFT), T(E), T(L), T(L), T(O), T(SPACE), W(100), D(LSFT), T(W), U(LSFT), I(10), T(O), T(R), T(L), T(D), D(LSFT), T(1), U(LSFT), END);
+        }
+    }
+    return MACRO_NONE;
+};
+
 TEST_F(Macro, PlayASimpleMacro) {
     TestDriver driver;
     InSequence s;
-    press_key(8, 0);
+    auto       key_macro = KeymapKey(0, 8, 0, M(0));
+
+    set_keymap({key_macro});
+
+    key_macro.press();
+
     uint32_t current_time = timer_read32();
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT))).AT_TIME(0);
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT, KC_H))).AT_TIME(0);
@@ -68,4 +83,6 @@ TEST_F(Macro, PlayASimpleMacro) {
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT))).AT_TIME(210);
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).AT_TIME(220);
     run_one_scan_loop();
+
+    key_macro.release();
 }
diff --git a/tests/basic/test_one_shot_keys.cpp b/tests/basic/test_one_shot_keys.cpp
new file mode 100644
index 0000000000..98178912e4
--- /dev/null
+++ b/tests/basic/test_one_shot_keys.cpp
@@ -0,0 +1,197 @@
+/* Copyright 2021 Stefan Kerkmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "action_util.h"
+#include "keyboard_report_util.hpp"
+#include "test_common.hpp"
+
+using testing::_;
+using testing::InSequence;
+
+class OneShot : public TestFixture {};
+class OneShotParametrizedTestFixture : public ::testing::WithParamInterface<std::pair<KeymapKey, KeymapKey>>, public OneShot {};
+
+TEST_F(OneShot, OSMWithoutAdditionalKeypressDoesNothing) {
+    TestDriver driver;
+    auto       osm_key = KeymapKey(0, 0, 0, OSM(MOD_LSFT), KC_LSFT);
+
+    set_keymap({osm_key});
+
+    /* Press and release OSM key*/
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    osm_key.press();
+    run_one_scan_loop();
+    osm_key.release();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* OSM are added when an actual report is send */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(osm_key.report_code)));
+    send_keyboard_report();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Make unit-test pass */
+    clear_oneshot_mods();
+}
+
+#if defined(ONESHOT_TIMEOUT)
+
+TEST_P(OneShotParametrizedTestFixture, OSMExpiredDoesNothing) {
+    TestDriver driver;
+    KeymapKey  osm_key     = GetParam().first;
+    KeymapKey  regular_key = GetParam().second;
+
+    set_keymap({osm_key, regular_key});
+
+    /* Press and release OSM */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    osm_key.press();
+    run_one_scan_loop();
+    osm_key.release();
+    idle_for(ONESHOT_TIMEOUT);
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Press regular key */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(regular_key.report_code))).Times(1);
+    regular_key.press();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release regular key */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
+    regular_key.release();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+#endif
+
+TEST_P(OneShotParametrizedTestFixture, OSMWithAdditionalKeypress) {
+    TestDriver driver;
+    KeymapKey  osm_key     = GetParam().first;
+    KeymapKey  regular_key = GetParam().second;
+
+    set_keymap({osm_key, regular_key});
+
+    /* Press and release OSM */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    osm_key.press();
+    run_one_scan_loop();
+    osm_key.release();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Press regular key */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(osm_key.report_code, regular_key.report_code))).Times(1);
+    regular_key.press();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release regular key */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
+    regular_key.release();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+TEST_P(OneShotParametrizedTestFixture, OSMAsRegularModifierWithAdditionalKeypress) {
+    TestDriver          driver;
+    testing::InSequence s;
+
+    KeymapKey osm_key     = GetParam().first;
+    KeymapKey regular_key = GetParam().second;
+
+    set_keymap({osm_key, regular_key});
+
+    /* Press OSM */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    osm_key.press();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Press regular key */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    regular_key.press();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release regular key */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    regular_key.release();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release OSM */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(regular_key.report_code, osm_key.report_code))).Times(1);
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(1);
+    osm_key.release();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
+
+// clang-format off
+
+INSTANTIATE_TEST_CASE_P(
+    OneShotModifierTests,
+    OneShotParametrizedTestFixture,
+    ::testing::Values(
+        /* first is osm key, second is regular key. */
+        std::make_pair(KeymapKey{0, 0, 0, OSM(MOD_LSFT), KC_LSFT}, KeymapKey{0, 1, 1, KC_A}),
+        std::make_pair(KeymapKey{0, 0, 0, OSM(MOD_LCTL), KC_LCTL}, KeymapKey{0, 1, 1, KC_A}),
+        std::make_pair(KeymapKey{0, 0, 0, OSM(MOD_LALT), KC_LALT}, KeymapKey{0, 1, 1, KC_A}),
+        std::make_pair(KeymapKey{0, 0, 0, OSM(MOD_LGUI), KC_LGUI}, KeymapKey{0, 1, 1, KC_A}),
+        std::make_pair(KeymapKey{0, 0, 0, OSM(MOD_RCTL), KC_RCTL}, KeymapKey{0, 1, 1, KC_A}),
+        std::make_pair(KeymapKey{0, 0, 0, OSM(MOD_RSFT), KC_RSFT}, KeymapKey{0, 1, 1, KC_A}),
+        std::make_pair(KeymapKey{0, 0, 0, OSM(MOD_RALT), KC_RALT}, KeymapKey{0, 1, 1, KC_A}),
+        std::make_pair(KeymapKey{0, 0, 0, OSM(MOD_RGUI), KC_RGUI}, KeymapKey{0, 1, 1, KC_A})
+        ));
+// clang-format on
+
+TEST_F(OneShot, OSLWithAdditionalKeypress) {
+    TestDriver driver;
+    InSequence s;
+    KeymapKey  osl_key     = KeymapKey{0, 0, 0, OSL(1)};
+    KeymapKey  regular_key = KeymapKey{1, 1, 0, KC_A};
+
+    set_keymap({osl_key, regular_key});
+
+    /* Press OSL key */
+    EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
+    osl_key.press();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release OSL key */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(2);
+    osl_key.release();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Press regular key */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(regular_key.report_code))).Times(2);
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
+    regular_key.press();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+
+    /* Release regular key */
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
+    regular_key.release();
+    run_one_scan_loop();
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}
diff --git a/tests/basic/test_tapping.cpp b/tests/basic/test_tapping.cpp
index 88ab97eb6e..e4a7e4a9f3 100644
--- a/tests/basic/test_tapping.cpp
+++ b/tests/basic/test_tapping.cpp
@@ -14,8 +14,11 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "keyboard_report_util.hpp"
+#include "keycode.h"
 #include "test_common.hpp"
 #include "action_tapping.h"
+#include "test_keymap_key.hpp"
 
 using testing::_;
 using testing::InSequence;
@@ -25,14 +28,19 @@ class Tapping : public TestFixture {};
 TEST_F(Tapping, TapA_SHFT_T_KeyReportsKey) {
     TestDriver driver;
     InSequence s;
+    auto       key_shift_hold_p_tap = KeymapKey(0, 7, 0, SFT_T(KC_P));
+
+    set_keymap({key_shift_hold_p_tap});
 
-    press_key(7, 0);
     // Tapping keys does nothing on press
+    key_shift_hold_p_tap.press();
     EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
     run_one_scan_loop();
-    release_key(7, 0);
+
     // First we get the key press
+    key_shift_hold_p_tap.release();
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_P)));
+
     // Then the release
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     run_one_scan_loop();
@@ -41,12 +49,21 @@ TEST_F(Tapping, TapA_SHFT_T_KeyReportsKey) {
 TEST_F(Tapping, HoldA_SHFT_T_KeyReportsShift) {
     TestDriver driver;
     InSequence s;
+    auto       mod_tap_hold_key = KeymapKey(0, 7, 0, SFT_T(KC_P));
+
+    set_keymap({mod_tap_hold_key});
+
+    mod_tap_hold_key.press();
 
-    press_key(7, 0);
     // Tapping keys does nothing on press
     EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
     idle_for(TAPPING_TERM);
-    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT)));
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT)));
+    run_one_scan_loop();
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
+    mod_tap_hold_key.release();
     run_one_scan_loop();
 }
 
@@ -54,12 +71,16 @@ TEST_F(Tapping, ANewTapWithinTappingTermIsBuggy) {
     // See issue #1478 for more information
     TestDriver driver;
     InSequence s;
+    auto       key_shift_hold_p_tap = KeymapKey(0, 7, 0, SFT_T(KC_P));
+
+    set_keymap({key_shift_hold_p_tap});
 
-    press_key(7, 0);
     // Tapping keys does nothing on press
+    key_shift_hold_p_tap.press();
     EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
     run_one_scan_loop();
-    release_key(7, 0);
+    key_shift_hold_p_tap.release();
+
     // First we get the key press
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_P)));
     // Then the release
@@ -67,19 +88,20 @@ TEST_F(Tapping, ANewTapWithinTappingTermIsBuggy) {
     run_one_scan_loop();
 
     // This sends KC_P, even if it should do nothing
-    press_key(7, 0);
+    key_shift_hold_p_tap.press();
     // This test should not succed if everything works correctly
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_P)));
     run_one_scan_loop();
-    release_key(7, 0);
+
+    key_shift_hold_p_tap.release();
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
     idle_for(TAPPING_TERM + 1);
 
     // On the other hand, nothing is sent if we are outside the tapping term
-    press_key(7, 0);
+    key_shift_hold_p_tap.press();
     EXPECT_CALL(driver, send_keyboard_mock(_)).Times(0);
     run_one_scan_loop();
-    release_key(7, 0);
+    key_shift_hold_p_tap.release();
 
     // First we get the key press
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_P)));
@@ -90,8 +112,12 @@ TEST_F(Tapping, ANewTapWithinTappingTermIsBuggy) {
     // Now we are geting into strange territory, as the hold registers too early here
     // But the stranges part is:
     // If TAPPING_TERM + 1 above is changed to TAPPING_TERM or TAPPING_TERM + 2 it doesn't
-    press_key(7, 0);
+    key_shift_hold_p_tap.press();
     // Shouldn't be called here really
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LEFT_SHIFT))).Times(1);
     idle_for(TAPPING_TERM);
-}
+
+    EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
+    key_shift_hold_p_tap.release();
+    run_one_scan_loop();
+}
\ No newline at end of file