1 files changed, 133 insertions, 0 deletions
diff --git a/guava-tests/test/com/google/common/testing/SerializableTesterTest.java b/guava-tests/test/com/google/common/testing/SerializableTesterTest.java
new file mode 100644
index 0000000..d62860b
--- /dev/null
+++ b/guava-tests/test/com/google/common/testing/SerializableTesterTest.java
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2009 The Guava Authors
+ *
+ * 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.common.testing;
+
+import junit.framework.AssertionFailedError;
+import junit.framework.TestCase;
+
+import java.io.Serializable;
+
+/**
+ * Tests for {@link SerializableTester}.
+ *
+ * @author Nick Kralevich
+ */
+public class SerializableTesterTest extends TestCase {
+  public void testStringAssertions() {
+    String original = "hello world";
+    String copy = SerializableTester.reserializeAndAssert(original);
+    assertEquals(original, copy);
+    assertNotSame(original, copy);
+  }
+
+  public void testClassWhichDoesNotImplementEquals() {
+    ClassWhichDoesNotImplementEquals orig =
+        new ClassWhichDoesNotImplementEquals();
+    boolean errorNotThrown = false;
+    try {
+      SerializableTester.reserializeAndAssert(orig);
+      errorNotThrown = true;
+    } catch (AssertionFailedError error) {
+      // expected
+      assertContains("must be equal to", error.getMessage());
+    }
+    assertFalse(errorNotThrown);
+  }
+
+  public void testClassWhichIsAlwaysEqualButHasDifferentHashcodes() {
+    ClassWhichIsAlwaysEqualButHasDifferentHashcodes orig =
+        new ClassWhichIsAlwaysEqualButHasDifferentHashcodes();
+    boolean errorNotThrown = false;
+    try {
+      SerializableTester.reserializeAndAssert(orig);
+      errorNotThrown = true;
+    } catch (AssertionFailedError error) {
+      // expected
+      assertContains("must be equal to the hash", error.getMessage());
+    }
+    assertFalse(errorNotThrown);
+  }
+
+  public void testObjectWhichIsEqualButChangesClass() {
+    ObjectWhichIsEqualButChangesClass orig =
+        new ObjectWhichIsEqualButChangesClass();
+    boolean errorNotThrown = false;
+    try {
+      SerializableTester.reserializeAndAssert(orig);
+      errorNotThrown = true;
+    } catch (AssertionFailedError error) {
+      // expected
+      assertContains("expected:<class ", error.getMessage());
+    }
+    assertFalse(errorNotThrown);
+  }
+
+  private static class ClassWhichDoesNotImplementEquals
+      implements Serializable {
+    private static final long serialVersionUID = 1L;
+  }
+
+  private static class ClassWhichIsAlwaysEqualButHasDifferentHashcodes
+      implements Serializable {
+    private static final long serialVersionUID = 2L;
+
+    @Override
+    public boolean equals(Object other) {
+      return (other instanceof ClassWhichIsAlwaysEqualButHasDifferentHashcodes);
+    }
+  }
+
+  private static class ObjectWhichIsEqualButChangesClass
+      implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    @Override
+    public boolean equals(Object other) {
+      return (other instanceof ObjectWhichIsEqualButChangesClass
+          || other instanceof OtherForm);
+    }
+
+    @Override
+    public int hashCode() {
+      return 1;
+    }
+
+    private Object writeReplace() {
+      return new OtherForm();
+    }
+
+    private static class OtherForm implements Serializable {
+      @Override
+      public boolean equals(Object other) {
+        return (other instanceof ObjectWhichIsEqualButChangesClass
+            || other instanceof OtherForm);
+      }
+
+      @Override
+      public int hashCode() {
+        return 1;
+      }
+    }
+  }
+
+  private static void assertContains(String expectedSubstring, String actual) {
+    // TODO(kevinb): use a Truth assertion here
+    if (!actual.contains(expectedSubstring)) {
+      fail("expected <" + actual + "> to contain <" + expectedSubstring + ">");
+    }
+  }
+}