tdd-java-demo

commit e7a5b36bd8731e21bdc21c450a43c69639e26ab2
parent 469f33b94b91ce73eb3a4bcb9078f6475ababf71
Author: Jul <jul@9o.is>
Date:   Wed, 31 Mar 2021 15:25:45 +0800

outputs total of $0.00

Diffstat:
M
.gitignore
 | 
5
+++--
M
src/main/java/takehome/Runner.java
 | 
6
+++++-
A
src/test/java/takehome/RunnerTest.java
 | 
27
+++++++++++++++++++++++++++

3 files changed, 35 insertions(+), 3 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -1,2 +1,3 @@
 .gradle/
-.idea/
-\ No newline at end of file
+.idea/
+build/
+\ No newline at end of file
diff --git a/src/main/java/takehome/Runner.java b/src/main/java/takehome/Runner.java
@@ -2,12 +2,16 @@ package takehome;
 
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.io.PrintStream;
 
 public class Runner {
+    private final PrintStream out;
+
     public Runner(InputStream in, OutputStream out) {
+        this.out = new PrintStream(out);
     }
 
     public void run() {
-
+        out.println("Total: $0.00");
     }
 }
diff --git a/src/test/java/takehome/RunnerTest.java b/src/test/java/takehome/RunnerTest.java
@@ -0,0 +1,26 @@
+package takehome;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.util.Arrays;
+import java.util.List;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.contains;
+
+class RunnerTest {
+
+    @Test
+    public void example() {
+        assertThat(output(), contains("Total: $0.00"));
+    }
+
+    private List<String> output() {
+        ByteArrayInputStream in = new ByteArrayInputStream("".getBytes());
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        new Runner(in, out).run();
+        return Arrays.asList(out.toString().split("\n"));
+    }
+}
+\ No newline at end of file