feat: implement MainWindow label update on valueReceived

src/app/MainWindow.cxx

@@ -0,0 +1,33 @@
+// MainWindow.cxx
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Author: Unai Blazquez <unaibg2000@gmail.com>
+
+#include "MainWindow.hpp"
+
+MainWindow::MainWindow(QWidget* parent) : QWidget(parent)
+{
+  setWindowTitle("Azkoyen IPC Monitor");
+  setMinimumSize(320, 120);
+
+  auto* layout = new QVBoxLayout(this);
+
+  m_title_label = new QLabel("Last received value:", this);
+  m_value_label = new QLabel("(waiting...)", this);
+
+  // Make the value label stand out a bit
+  QFont font = m_value_label->font();
+  font.setPointSize(24);
+  font.setBold(true);
+  m_value_label->setFont(font);
+  m_value_label->setAlignment(Qt::AlignCenter);
+
+  layout->addWidget(m_title_label);
+  layout->addWidget(m_value_label);
+}
+
+QString MainWindow::lastDisplayedText() const { return m_value_label->text(); }
+
+void MainWindow::onValueReceived(int value)
+{
+  m_value_label->setText(QString::number(value));
+}

tests/CMakeLists.txt

@@ -53,3 +53,23 @@ target_link_libraries(test_consumer
 )
 
 add_test(NAME test_consumer COMMAND test_consumer)
+
+add_executable(test_main_window
+    test_main_window.cxx
+    ${CMAKE_SOURCE_DIR}/src/app/MainWindow.cxx
+    ${CMAKE_SOURCE_DIR}/include/MainWindow.hpp
+)
+
+target_include_directories(test_main_window PRIVATE ${CMAKE_SOURCE_DIR}/include)
+
+target_link_libraries(test_main_window
+    PRIVATE
+        core
+        gtest
+        gtest_main
+        Qt5::Core
+        Qt5::Widgets
+        Qt5::Test
+)
+
+add_test(NAME test_main_window COMMAND test_main_window)