Add Unit Tests for InputEventKey

2 files changed, 295 insertions, 0 deletions

diff --git a/tests/core/input/test_input_event_key.h b/tests/core/input/test_input_event_key.h
new file mode 100644
index 0000000000..5d4ca55a35
--- /dev/null
+++ b/tests/core/input/test_input_event_key.h
@@ -0,0 +1,294 @@
+/*************************************************************************/
+/*  test_input_event_key.h                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef TEST_INPUT_EVENT_KEY_H
+#define TEST_INPUT_EVENT_KEY_H
+
+#include "core/input/input_event.h"
+#include "core/os/keyboard.h"
+
+#include "tests/test_macros.h"
+
+namespace TestInputEventKey {
+
+TEST_CASE("[InputEventKey] Key correctly registers being pressed") {
+	InputEventKey key;
+	key.set_pressed(true);
+	CHECK(key.is_pressed() == true);
+
+	key.set_pressed(false);
+	CHECK(key.is_pressed() == false);
+}
+
+TEST_CASE("[InputEventKey] Key correctly stores and retrieves keycode") {
+	InputEventKey key;
+
+	key.set_keycode(Key::ENTER);
+	CHECK(key.get_keycode() == Key::ENTER);
+	CHECK(key.get_keycode() != Key::PAUSE);
+
+	key.set_physical_keycode(Key::BACKSPACE);
+	CHECK(key.get_physical_keycode() == Key::BACKSPACE);
+	CHECK(key.get_physical_keycode() != Key::PAUSE);
+}
+
+TEST_CASE("[InputEventKey] Key correctly stores and retrieves keycode with modifiers") {
+	InputEventKey key;
+
+	key.set_keycode(Key::ENTER);
+	key.set_ctrl_pressed(true);
+
+	CHECK(key.get_keycode_with_modifiers() == (Key::ENTER | KeyModifierMask::CTRL));
+	CHECK(key.get_keycode_with_modifiers() != (Key::ENTER | KeyModifierMask::SHIFT));
+	CHECK(key.get_keycode_with_modifiers() != Key::ENTER);
+
+	key.set_physical_keycode(Key::SPACE);
+	key.set_ctrl_pressed(true);
+
+	CHECK(key.get_physical_keycode_with_modifiers() == (Key::SPACE | KeyModifierMask::CTRL));
+	CHECK(key.get_physical_keycode_with_modifiers() != (Key::SPACE | KeyModifierMask::SHIFT));
+	CHECK(key.get_physical_keycode_with_modifiers() != Key::SPACE);
+}
+
+TEST_CASE("[InputEventKey] Key correctly stores and retrieves unicode") {
+	InputEventKey key;
+
+	key.set_unicode('x');
+	CHECK(key.get_unicode() == 'x');
+	CHECK(key.get_unicode() != 'y');
+}
+
+TEST_CASE("[InputEventKey] Key correctly stores and checks echo") {
+	InputEventKey key;
+
+	key.set_echo(true);
+	CHECK(key.is_echo() == true);
+
+	key.set_echo(false);
+	CHECK(key.is_echo() == false);
+}
+
+TEST_CASE("[InputEventKey] Key correctly converts itself to text") {
+	InputEventKey none_key;
+
+	// These next three tests test the functionality of getting a key that is set to None
+	// as text. These cases are a bit weird, since None has no textual representation
+	// (find_keycode_name(Key::NONE) results in a nullptr). Thus, these tests look weird
+	// with only (Physical) or a lonely modifier with (Physical) but (as far as I
+	// understand the code, that is intended behaviour.
+
+	// Key is None without a physical key.
+	none_key.set_keycode(Key::NONE);
+	CHECK(none_key.as_text() == " (Physical)");
+
+	// Key is none and has modifiers.
+	none_key.set_ctrl_pressed(true);
+	CHECK(none_key.as_text() == "Ctrl+ (Physical)");
+
+	// Key is None WITH a physical key AND modifiers.
+	none_key.set_physical_keycode(Key::ENTER);
+	CHECK(none_key.as_text() == "Ctrl+Enter (Physical)");
+
+	InputEventKey none_key2;
+
+	// Key is None without modifers with a physical key.
+	none_key2.set_keycode(Key::NONE);
+	none_key2.set_physical_keycode(Key::ENTER);
+
+	CHECK(none_key2.as_text() == "Enter (Physical)");
+
+	InputEventKey key;
+
+	// Key has keycode.
+	key.set_keycode(Key::SPACE);
+	CHECK(key.as_text() != "");
+	CHECK(key.as_text() == "Space");
+
+	// Key has keycode and modifiers.
+	key.set_ctrl_pressed(true);
+	CHECK(key.as_text() != "Space");
+	CHECK(key.as_text() == "Ctrl+Space");
+
+	// Since the keycode is set to Key::NONE upon initialization of the
+	// InputEventKey and you can only update it with another Key, the keycode
+	// cannot be empty, so the kc.is_empty() case cannot be tested.
+}
+
+TEST_CASE("[InputEventKey] Key correctly converts its state to a string representation") {
+	InputEventKey none_key;
+
+	// Set physical to true.
+	CHECK(none_key.to_string() == "InputEventKey: keycode=0 (), mods=none, physical=true, pressed=false, echo=false");
+	// Set physical key to Escape.
+	none_key.set_physical_keycode(Key::ESCAPE);
+	CHECK(none_key.to_string() == "InputEventKey: keycode=16777217 (Escape), mods=none, physical=true, pressed=false, echo=false");
+
+	InputEventKey key;
+
+	// Set physical to None, set keycode to Space.
+	key.set_keycode(Key::SPACE);
+	CHECK(key.to_string() == "InputEventKey: keycode=32 (Space), mods=none, physical=false, pressed=false, echo=false");
+
+	// Set pressed to true.
+	key.set_pressed(true);
+	CHECK(key.to_string() == "InputEventKey: keycode=32 (Space), mods=none, physical=false, pressed=true, echo=false");
+
+	// set echo to true.
+	key.set_echo(true);
+	CHECK(key.to_string() == "InputEventKey: keycode=32 (Space), mods=none, physical=false, pressed=true, echo=true");
+
+	// Press Ctrl and Alt.
+	key.set_ctrl_pressed(true);
+	key.set_alt_pressed(true);
+	CHECK(key.to_string() == "InputEventKey: keycode=32 (Space), mods=Ctrl+Alt, physical=false, pressed=true, echo=true");
+}
+
+TEST_CASE("[InputEventKey] Key is correctly converted to reference") {
+	InputEventKey base_key;
+	Ref<InputEventKey> key_ref = base_key.create_reference(Key::ENTER);
+
+	CHECK(key_ref->get_keycode() == Key::ENTER);
+}
+
+TEST_CASE("[InputEventKey] Keys are correctly matched based on action") {
+	bool pressed = false;
+	float strength, raw_strength = 0.0;
+
+	InputEventKey key;
+
+	// Nullptr.
+	CHECK_MESSAGE(key.action_match(nullptr, false, 0.0f, &pressed, &strength, &raw_strength) == false, "nullptr as key reference should result in false");
+
+	// Match on keycode.
+	key.set_keycode(Key::SPACE);
+	Ref<InputEventKey> match = key.create_reference(Key::SPACE);
+	Ref<InputEventKey> no_match = key.create_reference(Key::ENTER);
+
+	CHECK(key.action_match(match, false, 0.0f, &pressed, &strength, &raw_strength) == true);
+	CHECK(key.action_match(no_match, false, 0.0f, &pressed, &strength, &raw_strength) == false);
+
+	// Check that values are correctly transferred to the pointers.
+	CHECK(pressed == false);
+	CHECK(strength < 0.5);
+	CHECK(raw_strength < 0.5);
+
+	match->set_pressed(true);
+	key.action_match(match, false, 0.0f, &pressed, &strength, &raw_strength);
+
+	CHECK(pressed == true);
+	CHECK(strength > 0.5);
+	CHECK(raw_strength > 0.5);
+
+	// Tests when keycode is None: Then you rely on physical keycode.
+	InputEventKey none_key;
+	none_key.set_physical_keycode(Key::SPACE);
+
+	Ref<InputEventKey> match_none = none_key.create_reference(Key::NONE);
+	match_none->set_physical_keycode(Key::SPACE);
+
+	Ref<InputEventKey> no_match_none = none_key.create_reference(Key::NONE);
+	no_match_none->set_physical_keycode(Key::ENTER);
+
+	CHECK(none_key.action_match(match_none, false, 0.0f, &pressed, &strength, &raw_strength) == true);
+	CHECK(none_key.action_match(no_match_none, false, 0.0f, &pressed, &strength, &raw_strength) == false);
+
+	// Test exact match.
+	InputEventKey key2, ref_key;
+	key2.set_keycode(Key::SPACE);
+
+	Ref<InputEventKey> match2 = ref_key.create_reference(Key::SPACE);
+
+	// Now both press Ctrl and Shift.
+	key2.set_ctrl_pressed(true);
+	key2.set_shift_pressed(true);
+
+	match2->set_ctrl_pressed(true);
+	match2->set_shift_pressed(true);
+
+	// Now they should match.
+	bool exact_match = true;
+	CHECK(key2.action_match(match2, exact_match, 0.0f, &pressed, &strength, &raw_strength) == true);
+
+	// Modify matching key such that it does no longer match in terms of modifiers: Shift
+	// is no longer pressed.
+	match2->set_shift_pressed(false);
+	CHECK(match2->is_shift_pressed() == false);
+	CHECK(key2.action_match(match2, exact_match, 0.0f, &pressed, &strength, &raw_strength) == false);
+}
+
+TEST_CASE("[IsMatch] Keys are correctly matched") {
+	// Key with NONE as keycode.
+	InputEventKey key;
+	key.set_keycode(Key::NONE);
+	key.set_physical_keycode(Key::SPACE);
+
+	// Nullptr.
+	CHECK(key.is_match(nullptr, false) == false);
+
+	Ref<InputEventKey> none_ref = key.create_reference(Key::NONE);
+
+	none_ref->set_physical_keycode(Key::SPACE);
+	CHECK(key.is_match(none_ref, false) == true);
+
+	none_ref->set_physical_keycode(Key::ENTER);
+	CHECK(key.is_match(none_ref, false) == false);
+
+	none_ref->set_physical_keycode(Key::SPACE);
+
+	key.set_ctrl_pressed(true);
+	none_ref->set_ctrl_pressed(false);
+	CHECK(key.is_match(none_ref, true) == false);
+
+	none_ref->set_ctrl_pressed(true);
+	CHECK(key.is_match(none_ref, true) == true);
+
+	// Ref with actual keycode.
+	InputEventKey key2;
+	key2.set_keycode(Key::SPACE);
+
+	Ref<InputEventKey> match = key2.create_reference(Key::SPACE);
+	Ref<InputEventKey> no_match = key2.create_reference(Key::ENTER);
+
+	CHECK(key2.is_match(match, false) == true);
+	CHECK(key2.is_match(no_match, false) == false);
+
+	// Now the keycode is the same, but the modifiers differ.
+	no_match->set_keycode(Key::SPACE);
+
+	key2.set_ctrl_pressed(true);
+	match->set_ctrl_pressed(true);
+	no_match->set_shift_pressed(true);
+
+	CHECK(key2.is_match(match, true) == true);
+	CHECK(key2.is_match(no_match, true) == false);
+}
+} // namespace TestInputEventKey
+
+#endif // TEST_INPUT_EVENT_KEY_H
diff --git a/tests/test_main.cpp b/tests/test_main.cpp
index cb086da53b..fca484a6b3 100644
--- a/tests/test_main.cpp
+++ b/tests/test_main.cpp
@@ -30,6 +30,7 @@
 
 #include "test_main.h"
 
+#include "tests/core/input/test_input_event_key.h"
 #include "tests/core/input/test_shortcut.h"
 #include "tests/core/io/test_config_file.h"
 #include "tests/core/io/test_file_access.h"