1 files changed, 40 insertions, 0 deletions
diff --git a/hamcrest-core/src/test/java/org/hamcrest/TypeSafeMatcherTest.java b/hamcrest-core/src/test/java/org/hamcrest/TypeSafeMatcherTest.java
new file mode 100644
index 0000000..e23bab8
--- /dev/null
+++ b/hamcrest-core/src/test/java/org/hamcrest/TypeSafeMatcherTest.java
@@ -0,0 +1,40 @@
+package org.hamcrest;
+
+import org.junit.Test;
+
+import static org.hamcrest.AbstractMatcherTest.assertMismatchDescription;
+import static org.junit.Assert.assertFalse;
+
+public final class TypeSafeMatcherTest {
+    private final Matcher<String> matcher = new TypeSafeMatcherSubclass();
+
+    public static class TypeSafeMatcherSubclass extends TypeSafeMatcher<String> {
+        @Override
+        public boolean matchesSafely(String item) {
+            return false;
+        }
+
+        @Override
+        public void describeMismatchSafely(String item, Description mismatchDescription) {
+          mismatchDescription.appendText("The mismatch");
+        }
+
+        @Override
+        public void describeTo(Description description) {
+        }
+    }
+
+    @Test public void
+    canDetermineMatcherTypeFromProtectedMatchesSafelyMethod() {
+        assertFalse(matcher.matches(null));
+        assertFalse(matcher.matches(10));
+    }
+
+    @SuppressWarnings({ "unchecked", "rawtypes" })
+    @Test public void
+    describesMismatches() {
+      assertMismatchDescription("was null", matcher, null);
+      assertMismatchDescription("was a java.lang.Integer (<3>)", (Matcher)matcher, 3);
+      assertMismatchDescription("The mismatch", matcher, "a string");
+    }
+}