Fix and add unit tests for Caps Word to work with Unicode Map, Auto Shift, Retro Shift. (#17284)

* Fix Caps Word and Unicode Map

* Tests for Caps Word + Auto Shift and Unicode Map.

* Fix formatting

* Add additional keyboard report expectation macros

This commit defines five test utilities, EXPECT_REPORT, EXPECT_UNICODE,
EXPECT_EMPTY_REPORT, EXPECT_ANY_REPORT and EXPECT_NO_REPORT for use with
TestDriver.

EXPECT_REPORT sets a gmock expectation that a given keyboard report will
be sent. For instance,

  EXPECT_REPORT(driver, (KC_LSFT, KC_A));

is shorthand for

  EXPECT_CALL(driver,
      send_keyboard_mock(KeyboardReport(KC_LSFT, KC_A)));

EXPECT_UNICODE sets a gmock expectation that a given Unicode code point
will be sent using UC_LNX input mode. For instance for U+2013,

  EXPECT_UNICODE(driver, 0x2013);

expects the sequence of keys:

  "Ctrl+Shift+U, 2, 0, 1, 3, space".

EXPECT_EMPTY_REPORT sets a gmock expectation that a given keyboard
report will be sent. For instance

  EXPECT_EMPTY_REPORT(driver);

expects a single report without keypresses or modifiers.

EXPECT_ANY_REPORT sets a gmock expectation that a arbitrary keyboard
report will be sent, without matching its contents. For instance

  EXPECT_ANY_REPORT(driver).Times(1);

expects a single arbitrary keyboard report will be sent.

EXPECT_NO_REPORT sets a gmock expectation that no keyboard report will
be sent at all.

* Add tap_key() and tap_keys() to TestFixture.

This commit adds a `tap_key(key)` method to TestFixture that taps a
given KeymapKey, optionally with a specified delay between press and
release.

Similarly, the method `tap_keys(key_a, key_b, key_c)` taps a sequence of
KeymapKeys.

* Use EXPECT_REPORT, tap_keys, etc. in most tests.

This commit uses EXPECT_REPORT, EXPECT_UNICODE, EXPECT_EMPTY_REPORT,
EXPECT_NO_REPORT, tap_key() and tap_keys() test utilities from the
previous two commits in most tests. Particularly the EXPECT_REPORT
macro is frequently useful and makes a nice reduction in boilerplate
needed to express many tests.

Co-authored-by: David Kosorin <david@kosorin.net>

1 files changed, 61 insertions, 1 deletions

diff --git a/tests/test_common/test_driver.hpp b/tests/test_common/test_driver.hpp
index f9197b3634..b58cfd1ebc 100644
--- a/tests/test_common/test_driver.hpp
+++ b/tests/test_common/test_driver.hpp
@@ -26,7 +26,9 @@ class TestDriver {
    public:
     TestDriver();
     ~TestDriver();
-    void set_leds(uint8_t leds) { m_leds = leds; }
+    void set_leds(uint8_t leds) {
+        m_leds = leds;
+    }
 
     MOCK_METHOD1(send_keyboard_mock, void(report_keyboard_t&));
     MOCK_METHOD1(send_mouse_mock, void(report_mouse_t&));
@@ -43,3 +45,61 @@ class TestDriver {
     uint8_t            m_leds = 0;
     static TestDriver* m_this;
 };
+
+/**
+ * @brief Sets gmock expectation that a keyboard report of `report` keys will be sent.
+ * For this macro to parse correctly, the `report` arg must be surrounded by
+ * parentheses ( ). For instance,
+ *
+ *   // Expect that a report of "KC_LSFT + KC_A" is sent to the host.
+ *   EXPECT_REPORT(driver, (KC_LSFT, KC_A));
+ *
+ * is shorthand for
+ *
+ *   EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT, KC_A)));
+ *
+ * It is possible to use .Times() and other gmock APIS with EXPECT_REPORT, for instance,
+ * allow only single report to be sent:
+ *
+ *   EXPECT_REPORT(driver, (KC_LSFT, KC_A)).Times(1);
+ */
+#define EXPECT_REPORT(driver, report) EXPECT_CALL((driver), send_keyboard_mock(KeyboardReport report))
+
+/**
+ * @brief Sets gmock expectation that Unicode `code_point` is sent with UC_LNX input
+ * mode. For instance for U+2013,
+ *
+ *   EXPECT_UNICODE(driver, 0x2013);
+ *
+ * expects the sequence of keys:
+ *
+ *   "Ctrl+Shift+U, 2, 0, 1, 3, space".
+ */
+#define EXPECT_UNICODE(driver, code_point) internal::expect_unicode_code_point((driver), (code_point))
+
+/**
+ * @brief Sets gmock expectation that a empty keyboard report will be sent.
+ * It is possible to use .Times() and other gmock APIS with EXPECT_EMPTY_REPORT, for instance,
+ * allow any number of empty reports with:
+ *
+ *   EXPECT_EMPTY_REPORT(driver).Times(AnyNumber());
+ */
+#define EXPECT_EMPTY_REPORT(driver) EXPECT_REPORT(driver, ())
+
+/**
+ * @brief Sets gmock expectation that a keyboard report will be sent, without matching its content.
+ * It is possible to use .Times() and other gmock APIS with EXPECT_ANY_REPORT, for instance,
+ * allow a single arbitrary report with:
+ *
+ *   EXPECT_ANY_REPORT(driver).Times(1);
+ */
+#define EXPECT_ANY_REPORT(driver) EXPECT_CALL((driver), send_keyboard_mock(_))
+
+/**
+ * @brief Sets gmock expectation that no keyboard report will be sent at all.
+ */
+#define EXPECT_NO_REPORT(driver) EXPECT_ANY_REPORT(driver).Times(0)
+
+namespace internal {
+void expect_unicode_code_point(TestDriver& driver, uint32_t code_point);
+} // namespace internal