테스트 코드 작성

Author: kimihiqq

build.gradle

@@ -15,6 +15,8 @@ dependencies {
 
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'
+    testImplementation 'org.mockito:mockito-core:3.12.4'
+
 }
 
 

src/test/java/me/kimihiqq/ApplicationTest.java

@@ -0,0 +1,40 @@
+package me.kimihiqq;
+
+import me.kimihiqq.io.Input;
+import me.kimihiqq.io.Output;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import static org.mockito.Mockito.*;
+
+public class CalculatorTest {
+
+    @Test
+    public void testCalculate() {
+        Input mockInput = Mockito.mock(Input.class);
+        Output mockOutput = Mockito.mock(Output.class);
+
+        when(mockInput.nextLine()).thenReturn("1 + 2 * 3");
+
+        Calculator calculator = new Calculator(mockInput, mockOutput);
+        calculator.calculate();
+
+        verify(mockOutput).println("7");
+    }
+
+    @Test
+    public void testList() {
+        Input mockInput = Mockito.mock(Input.class);
+        Output mockOutput = Mockito.mock(Output.class);
+
+        when(mockInput.nextLine()).thenReturn("5 + 6", "4 * 2");
+
+        Calculator calculator = new Calculator(mockInput, mockOutput);
+        calculator.calculate();
+        calculator.calculate();
+
+        calculator.list();
+
+        verify(mockOutput).println("5 + 6 = 11");
+        verify(mockOutput).println("4 * 2 = 8");
+    }
+}