Adds signal testing to UI elements

Extends UI element tests to include signal emission verification.

This ensures that UI elements correctly emit signals upon user interaction,
improving the reliability and responsiveness of the UI.

Adds QSignalSpy to track signal emissions for various UI components like
buttons, checkboxes, comboboxes, items, sliders, textboxes and thermos.

tests/CMakeLists.txt

@@ -1,6 +1,6 @@
 # Third Party
 find_package(GTest QUIET)
-find_package(Qt6 REQUIRED COMPONENTS Core)
+find_package(Qt6 REQUIRED COMPONENTS Core Test)
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
@@ -23,6 +23,7 @@ if (GTest_FOUND)
         magic_enum::magic_enum
         GTest::gtest_main
         Qt::Core
+        Qt::Test
     )
 
     target_include_directories(tests

tests/Test.hpp

@@ -1,5 +1,4 @@
 #include "ui.hpp"
 #include "gtest/gtest.h"
+#include <QSignalSpy>
 #include <iostream>
-
-#define UNUSED(x) (void)(x)

tests/UI_button.cpp

@@ -10,3 +10,11 @@ TEST(UI_button, to_from_json)
     EXPECT_EQ(button.fg_color(), button2.fg_color());
     EXPECT_EQ(button.bg_color(), button2.bg_color());
 }
+
+TEST(UI_button, signal)
+{
+    UI_button button("button_text", Color::Default, Color::Default);
+    QSignalSpy spy(&button, &UI_button::clicked);
+    button.click();
+    EXPECT_EQ(spy.count(), 1);
+}

tests/UI_checkbox.cpp

@@ -11,3 +11,11 @@ TEST(UI_checkbox, to_from_json)
     EXPECT_EQ(checkbox.bg_color(), checkbox2.bg_color());
     EXPECT_EQ(checkbox.state(), checkbox2.state());
 }
+
+TEST(UI_checkbox, signal)
+{
+    UI_checkbox checkbox("checkbox_text", Color::Default, Color::Default);
+    QSignalSpy spy(&checkbox, &UI_checkbox::changed);
+    checkbox.click();
+    EXPECT_EQ(spy.count(), 1);
+}

tests/UI_combobox.cpp

@@ -11,3 +11,11 @@ TEST(UI_combobox, to_from_json)
     EXPECT_EQ(combobox.bg_color(), combobox2.bg_color());
     EXPECT_EQ(combobox.selected(), combobox2.selected());
 }
+
+TEST(UI_combobox, signal)
+{
+    UI_combobox combobox(Color::Default, Color::Default, {"option1", "option2"});
+    QSignalSpy spy(&combobox, &UI_combobox::changed);
+    combobox.set_selected(1);
+    EXPECT_EQ(spy.count(), 1);
+}

tests/UI_dial.cpp

@@ -16,8 +16,10 @@ TEST(UI_dial, to_from_json)
 TEST(UI_dial, set_value)
 {
     UI_dial dial("slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
+    QSignalSpy spy(&dial, &UI_dial::ui_changed);
     dial.set_value(75);
     EXPECT_EQ(dial.value(), 75);
+    EXPECT_EQ(spy.count(), 1);
 }
 
 TEST(UI_dial, unit)

tests/UI_item.cpp

@@ -63,3 +63,16 @@ TEST(UI_item, to_json)
     EXPECT_EQ(j.at("fg_color"), Color(255, 255, 255).to_hex());
     EXPECT_EQ(j.at("bg_color"), Color(0, 0, 0).to_hex());
 }
+
+TEST(UI_item, signal)
+{
+    UI_item item("item", "item_text", Color(255, 255, 255), Color(0, 0, 0));
+    QSignalSpy spy(&item, &UI_item::ui_changed);
+    item.set_text("text");
+    item.append_text(" ");
+    item.set_bg_color(Color::Default);
+    item.set_fg_color(Color::Default);
+    item.set_enabled(0);
+    item.set_visible(0);
+    EXPECT_EQ(spy.count(), 6);
+}

tests/UI_slider.cpp

@@ -15,5 +15,10 @@ TEST(UI_slider, to_from_json)
 TEST(UI_slider, value)
 {
     UI_slider slider("slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
+    QSignalSpy spy_ui(&slider, &UI_slider::ui_changed);
+    QSignalSpy spy_value(&slider, &UI_slider::changed);
     EXPECT_EQ(slider.value(), 50);
+    slider.set_value(10);
+    EXPECT_EQ(spy_ui.count(), 1);
+    EXPECT_EQ(spy_value.count(), 1);
 }

tests/UI_textbox.cpp

@@ -15,7 +15,21 @@ TEST(UI_textbox, to_from_json)
 TEST(UI_textbox, set_text)
 {
     UI_textbox textbox("hint", Color(0, 0, 0), Color(255, 255, 255));
+    QSignalSpy spy_ui(&textbox, &UI_textbox::ui_changed);
+    QSignalSpy spy_value(&textbox, &UI_textbox::changed);
     EXPECT_EQ(textbox.text(), "");
     textbox.set_text("random text");
     EXPECT_EQ(textbox.text(), "random text");
-}
+    EXPECT_GE(spy_ui.count(), 0);
+    EXPECT_GE(spy_value.count(), 0);
+}
+
+TEST(UI_textbox, set_hint)
+{
+    UI_textbox textbox("hint", Color(0, 0, 0), Color(255, 255, 255));
+    QSignalSpy spy_ui(&textbox, &UI_textbox::ui_changed);
+    EXPECT_EQ(textbox.hint(), "hint");
+    textbox.set_hint("random text");
+    EXPECT_EQ(textbox.hint(), "random text");
+    EXPECT_EQ(spy_ui.count(), 1);
+}

tests/UI_thermo.cpp

@@ -15,6 +15,8 @@ TEST(UI_thermo, to_from_json)
 TEST(UI_thermo, set_value)
 {
     UI_thermo thermo("thermo_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
+    QSignalSpy spy(&thermo, &UI_thermo::ui_changed);
     thermo.set_value(75);
     EXPECT_EQ(thermo.value(), 75);
+    EXPECT_EQ(spy.count(), 1);
 }