Update sample for consistency

Author: e5l

.idea/gradle.xml

@@ -0,0 +1,174 @@
+package org.jetbrains.kotlin.junit;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+import java.time.LocalDateTime;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class TodoItemTest {
+
+    @Test
+    @DisplayName("Should create a new todo item with title and description")
+    void shouldCreateTodoItem() {
+        var item = new TodoItem("Buy groceries", "Milk, eggs, bread");
+
+        assertNotNull(item.id());
+        assertEquals("Buy groceries", item.title());
+        assertEquals("Milk, eggs, bread", item.description());
+        assertFalse(item.completed());
+        assertNotNull(item.createdAt());
+        assertNotNull(item.updatedAt());
+    }
+
+    @Test
+    @DisplayName("Should generate unique IDs for different items")
+    void shouldGenerateUniqueIds() {
+        var item1 = new TodoItem("Task 1", "Description 1");
+        var item2 = new TodoItem("Task 2", "Description 2");
+
+        assertNotEquals(item1.id(), item2.id());
+    }
+
+    @Test
+    @DisplayName("Should update title and updatedAt timestamp")
+    void shouldUpdateTitle() {
+        var item = new TodoItem("Old title", "Description");
+        var originalUpdatedAt = item.updatedAt();
+
+        try {
+            Thread.sleep(10);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+        }
+
+        item.setTitle("New title");
+
+        assertEquals("New title", item.title());
+        assertTrue(item.updatedAt().isAfter(originalUpdatedAt));
+    }
+
+    @Test
+    @DisplayName("Should update description and updatedAt timestamp")
+    void shouldUpdateDescription() {
+        var item = new TodoItem("Title", "Old description");
+        var originalUpdatedAt = item.updatedAt();
+
+        try {
+            Thread.sleep(10);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+        }
+
+        item.setDescription("New description");
+
+        assertEquals("New description", item.description());
+        assertTrue(item.updatedAt().isAfter(originalUpdatedAt));
+    }
+
+    @Test
+    @DisplayName("Should toggle completion status")
+    void shouldToggleCompletion() {
+        var item = new TodoItem("Task", "Description");
+
+        assertFalse(item.completed());
+
+        item.setCompleted(true);
+        assertTrue(item.completed());
+
+        item.setCompleted(false);
+        assertFalse(item.completed());
+    }
+
+    @Test
+    @DisplayName("Should update updatedAt when setting completion status")
+    void shouldUpdateTimestampOnCompletion() {
+        var item = new TodoItem("Task", "Description");
+        var originalUpdatedAt = item.updatedAt();
+
+        try {
+            Thread.sleep(10);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+        }
+
+        item.setCompleted(true);
+
+        assertTrue(item.updatedAt().isAfter(originalUpdatedAt));
+    }
+
+    @Test
+    @DisplayName("Should format toString correctly for incomplete task")
+    void shouldFormatToStringForIncompleteTask() {
+        var item = new TodoItem("Buy milk", "From store");
+
+        var result = item.toString();
+
+        assertTrue(result.contains("[ ]"));
+        assertTrue(result.contains("Buy milk"));
+        assertTrue(result.contains("From store"));
+    }
+
+    @Test
+    @DisplayName("Should format toString correctly for completed task")
+    void shouldFormatToStringForCompletedTask() {
+        var item = new TodoItem("Buy milk", "From store");
+        item.setCompleted(true);
+
+        var result = item.toString();
+
+        assertTrue(result.contains("[X]"));
+        assertTrue(result.contains("Buy milk"));
+        assertTrue(result.contains("From store"));
+    }
+
+    @Test
+    @DisplayName("Should compare items by ID for equality")
+    void shouldCompareById() {
+        var item1 = new TodoItem("Task", "Description");
+        var item2 = new TodoItem("id", "Task", "Description", false,
+                                      LocalDateTime.now(), LocalDateTime.now());
+
+        assertNotEquals(item1, item2);
+
+        var item3 = new TodoItem(item1.id(), "Different", "Different", true,
+                                      LocalDateTime.now(), LocalDateTime.now());
+
+        assertEquals(item1, item3);
+        assertEquals(item1.hashCode(), item3.hashCode());
+    }
+
+    @Test
+    @DisplayName("Should not be equal to null or different class")
+    void shouldHandleNullAndDifferentClass() {
+        var item = new TodoItem("Task", "Description");
+
+        assertNotEquals(null, item);
+        assertNotEquals("String", item);
+    }
+
+    @Test
+    @DisplayName("Should maintain createdAt timestamp")
+    void shouldMaintainCreatedAt() {
+        var item = new TodoItem("Task", "Description");
+        var createdAt = item.createdAt();
+
+        item.setTitle("New title");
+        item.setDescription("New description");
+        item.setCompleted(true);
+
+        assertEquals(createdAt, item.createdAt());
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = {"", "   ", "A", "This is a very long title for a todo item"})
+    @DisplayName("Should handle various title lengths")
+    void shouldHandleVariousTitles(String title) {
+        var item = new TodoItem(title, "Description");
+
+        assertEquals(title, item.title());
+    }
+}