1 files changed, 66 insertions, 0 deletions
diff --git a/tests/caps_word/auto_shift/test_caps_word_autoshift.cpp b/tests/caps_word/auto_shift/test_caps_word_autoshift.cpp
new file mode 100644
index 0000000000..849b993525
--- /dev/null
+++ b/tests/caps_word/auto_shift/test_caps_word_autoshift.cpp
@@ -0,0 +1,66 @@
+// Copyright 2022 Google LLC
+//
+// 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 "keyboard_report_util.hpp"
+#include "keycode.h"
+#include "test_common.hpp"
+#include "test_fixture.hpp"
+#include "test_keymap_key.hpp"
+
+using ::testing::_;
+using ::testing::AnyNumber;
+using ::testing::AnyOf;
+using ::testing::InSequence;
+
+class CapsWord : public TestFixture {
+   public:
+    void SetUp() override {
+        caps_word_off();
+    }
+};
+
+// Tests that with Auto Shift, letter keys are shifted by Caps Word
+// regardless of whether they are released before AUTO_SHIFT_TIMEOUT.
+TEST_F(CapsWord, AutoShiftKeys) {
+    TestDriver driver;
+    KeymapKey  key_a(0, 0, 0, KC_A);
+    KeymapKey  key_spc(0, 1, 0, KC_SPC);
+    set_keymap({key_a, key_spc});
+
+    // Allow any number of reports with no keys or only KC_LSFT.
+    // clang-format off
+    EXPECT_CALL(driver, send_keyboard_mock(AnyOf(
+                KeyboardReport(),
+                KeyboardReport(KC_LSFT))))
+        .Times(AnyNumber());
+    // clang-format on
+    { // Expect: "A, A, space, a".
+        InSequence s;
+        EXPECT_REPORT(driver, (KC_LSFT, KC_A));
+        EXPECT_REPORT(driver, (KC_LSFT, KC_A));
+        EXPECT_REPORT(driver, (KC_SPC));
+        EXPECT_REPORT(driver, (KC_A));
+    }
+
+    // Turn on Caps Word and type "A (quick tap), A (long press), space, A".
+    caps_word_on();
+
+    tap_key(key_a);                         // Tap A quickly.
+    tap_key(key_a, AUTO_SHIFT_TIMEOUT + 1); // Long press A.
+    tap_key(key_spc);
+    tap_key(key_a);
+
+    testing::Mock::VerifyAndClearExpectations(&driver);
+}