add first test

25-to-do-notes/app/build.gradle

@@ -52,6 +52,7 @@ dependencies {
 
     // Dependencies for local unit tests
     testImplementation "junit:junit:$junitVersion"
+    testImplementation "org.hamcrest:hamcrest-all:$hamcrestVersion"
 
     // AndroidX Test - Instrumented testing
     androidTestImplementation "androidx.test.ext:junit:$androidXTestExtKotlinRunnerVersion"

25-to-do-notes/app/src/test/java/com/example/android/architecture/blueprints/todoapp/ExampleUnitTest.kt

@@ -13,5 +13,6 @@ class ExampleUnitTest {
     @Test
     fun addition_isCorrect() {
         assertEquals(4, 2 + 2)
+        assertEquals(3, 1 + 1)
     }
 }

25-to-do-notes/app/src/test/java/com/example/android/architecture/blueprints/todoapp/statistics/StatisticsUtilsTest.kt

@@ -0,0 +1,29 @@
+package com.example.android.architecture.blueprints.todoapp.statistics
+
+import com.example.android.architecture.blueprints.todoapp.data.Task
+import org.hamcrest.Matchers.`is`
+import org.hamcrest.MatcherAssert.assertThat
+import org.junit.Test
+
+class StatisticsUtilsTest {
+
+    // Give meaningful names: subjectUnderTest_actionOrInput_resultState
+    @Test
+    fun getActiveAndCompleteStats_noCompleted_returnsHundredZero() {
+        // Arrange - Given: create an active task
+        val tasks = listOf<Task>(
+            Task("title", "description", isCompleted = false)
+        )
+        // Act - When: call the function
+        val result = getActiveAndCompletedStats(tasks)
+
+        // Assert - Then: check the result
+        /*assertEquals(result.completedTasksPercent, 0f)
+        assertEquals(result.activeTasksPercent, 100f)*/
+
+        // use hamcrest
+        assertThat(result.activeTasksPercent, `is`(100f))
+        assertThat(result.completedTasksPercent, `is`(0f))
+    }
+
+}

25-to-do-notes/build.gradle

@@ -41,6 +41,7 @@ ext {
     cardVersion = '1.0.0'
     espressoVersion = '3.4.0'
     fragmentKtxVersion = '1.4.0'
+    hamcrestVersion = '1.3'
     junitVersion = '4.13.2'
     materialVersion = '1.4.0'
     recyclerViewVersion = '1.2.1'