Upcasting/Exercise 2 tests

Object-Oriented Programming/Upcasting/Exercise 2/src/Task.kt

@@ -1,6 +1,7 @@
-// Upcasting/UpcastExercise2.kt
 package upcastingExercise2
 
+import atomictest.trace
+
 interface Apple {
   fun consume(): String
 }
@@ -29,6 +30,12 @@ fun main() {
     Braeburn()
   )
   apples.forEach {
-    println(it.consume())
+    trace(it.consume())
   }
+  trace eq """
+    chomp GrannySmith 
+    bite Gala
+    press Fuji
+    peel Braeburn
+  """
 }

Object-Oriented Programming/Upcasting/Exercise 2/task-info.yaml

@@ -3,20 +3,20 @@ files:
 - name: src/Task.kt
   visible: true
   placeholders:
-  - offset: 105
+  - offset: 98
     length: 76
     placeholder_text: class GrannySmith
-  - offset: 183
+  - offset: 176
     length: 61
     placeholder_text: class Gala
-  - offset: 246
+  - offset: 239
     length: 62
     placeholder_text: class Fuji
-  - offset: 310
+  - offset: 303
     length: 69
     placeholder_text: class Braeburn
-  - offset: 498
-    length: 25
-    placeholder_text: //    println(it.consume())
+  - offset: 491
+    length: 23
+    placeholder_text: //    trace(it.consume())
 - name: test/Tests.kt
   visible: false

Object-Oriented Programming/Upcasting/Exercise 2/test/Tests.kt

@@ -1,11 +1,57 @@
 package upcastingExercise2
 
+import atomictest.trace
+import org.junit.FixMethodOrder
 import org.junit.Test
-import util.unimplementedTest
+import org.junit.runners.MethodSorters
+import util.*
+import kotlin.reflect.KClass
+import kotlin.reflect.full.createInstance
+import kotlin.test.assertEquals
 
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
 class TestUpcastingExercise2 {
-    @Test fun testSolution() {
-        //TODO: implement your test here
-        unimplementedTest()
+
+  private val packageName = "upcastingExercise2"
+
+  private fun loadClass(className: String): KClass<*> = loadClass(packageName, className)
+
+  @Test
+  fun `#01 classes structure`() {
+    loadClass("Apple").apply {
+      assertInterface()
+      assertDeclaredMemberFunction("consume")
     }
+
+    listOf("GrannySmith", "Gala", "Fuji", "Braeburn").forEach {
+      loadClass(it).apply {
+        assertAbstract(expected = false)
+        assertInheritance("Apple")
+        assertDeclaredMemberFunction("consume")
+      }
+    }
+  }
+
+  @Test
+  fun `#02 consume apples`() {
+
+    listOf("GrannySmith", "Gala", "Fuji", "Braeburn").forEach {
+      loadClass("Apple").apply {
+        val consume = assertDeclaredMemberFunction("consume")
+        val apple = loadClass(it).createInstance()
+        trace(consume.call(apple) as String)
+      }
+    }
+
+    assertEquals(
+        message = "Incorrect sequence of actions applied to the apples",
+        actual = loadTraceContent(),
+        expected = listOf(
+            "chomp GrannySmith",
+            "bite Gala",
+            "press Fuji",
+            "peel Braeburn"
+        )
+    )
+  }
 }