1 files changed, 84 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/lib/util/AnsiStrippingOutputStreamTest.java b/src/test/java/com/google/devtools/build/lib/util/AnsiStrippingOutputStreamTest.java
new file mode 100644
index 0000000000..41428cbd55
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/util/AnsiStrippingOutputStreamTest.java
@@ -0,0 +1,84 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.lib.util;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import java.io.ByteArrayOutputStream;
+import java.io.OutputStream;
+import java.io.PrintStream;
+
+/**
+ * Tests for {@link AnsiStrippingOutputStream}.
+ */
+@RunWith(JUnit4.class)
+public class AnsiStrippingOutputStreamTest {
+  ByteArrayOutputStream output;
+  PrintStream input;
+
+  private static final String ESCAPE = "\u001b[";
+
+  @Before
+  public void setUp() throws Exception {
+    output = new ByteArrayOutputStream();
+    OutputStream inputStream = new AnsiStrippingOutputStream(output);
+    input = new PrintStream(inputStream);
+  }
+
+  private String getOutput(String... fragments) throws Exception {
+    for (String fragment: fragments) {
+      input.print(fragment);
+    }
+
+    return new String(output.toByteArray(), "ISO8859-1");
+  }
+
+  @Test
+  public void doesNotFailHorribly() throws Exception {
+    assertEquals("Love", getOutput("Love"));
+  }
+
+  @Test
+  public void canStripAnsiCode() throws Exception {
+    assertEquals("Love", getOutput(ESCAPE + "32mLove" + ESCAPE + "m"));
+  }
+
+  @Test
+  public void recognizesAnsiCodeWhenBrokenUp() throws Exception {
+    assertEquals("Love", getOutput("\u001b", "[", "mLove"));
+  }
+
+  @Test
+  public void handlesOnlyEscCorrectly() throws Exception {
+    assertEquals("\u001bLove", getOutput("\u001bLove"));
+  }
+
+  @Test
+  public void handlesEscInPlaceOfControlCharCorrectly() throws Exception {
+    assertEquals(ESCAPE + "31;42Love",
+        getOutput(ESCAPE + "31;42" + ESCAPE + "1mLove"));
+  }
+
+  @Test
+  public void handlesTwoEscapeSequencesCorrectly() throws Exception {
+    assertEquals("Love",
+        getOutput(ESCAPE + "32m" + ESCAPE + "1m" + "Love"));
+  }
+
+}