1 files changed, 70 insertions, 0 deletions
diff --git a/hamcrest-library/src/main/java/org/hamcrest/collection/IsMapContaining.java b/hamcrest-library/src/main/java/org/hamcrest/collection/IsMapContaining.java
new file mode 100644
index 0000000..74572dd
--- /dev/null
+++ b/hamcrest-library/src/main/java/org/hamcrest/collection/IsMapContaining.java
@@ -0,0 +1,70 @@
+package org.hamcrest.collection;
+
+import org.hamcrest.Description;
+import org.hamcrest.Factory;
+import org.hamcrest.Matcher;
+import org.hamcrest.TypeSafeMatcher;
+import org.hamcrest.core.IsAnything;
+
+import static org.hamcrest.core.IsEqual.equalTo;
+
+import java.util.Map;
+import java.util.Map.Entry;
+
+public class IsMapContaining<K,V> extends TypeSafeMatcher<Map<K, V>> {
+
+    private final Matcher<K> keyMatcher;
+    private final Matcher<V> valueMatcher;
+
+    public IsMapContaining(Matcher<K> keyMatcher, Matcher<V> valueMatcher) {
+        this.keyMatcher = keyMatcher;
+        this.valueMatcher = valueMatcher;
+    }
+
+    public boolean matchesSafely(Map<K, V> map) {
+        for (Entry<K, V> entry : map.entrySet()) {
+            if (keyMatcher.matches(entry.getKey()) && valueMatcher.matches(entry.getValue())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public void describeTo(Description description) {
+        description.appendText("map containing [")
+                   .appendDescriptionOf(keyMatcher)
+                   .appendText("->")
+			       .appendDescriptionOf(valueMatcher)
+			       .appendText("]");
+    }
+
+    @Factory
+    public static <K,V> Matcher<Map<K,V>> hasEntry(Matcher<K> keyMatcher, Matcher<V> valueMatcher) {
+        return new IsMapContaining<K,V>(keyMatcher, valueMatcher);
+    }
+
+    @Factory
+    public static <K,V> Matcher<Map<K,V>> hasEntry(K key, V value) {
+        return hasEntry(equalTo(key), equalTo(value));
+    }
+
+    @Factory
+    public static <K,V> Matcher<Map<K,V>> hasKey(Matcher<K> keyMatcher) {
+        return hasEntry(keyMatcher, IsAnything.<V>anything());
+    }
+
+    @Factory
+    public static <K,V> Matcher<Map<K,V>> hasKey(K key) {
+        return hasKey(equalTo(key));
+    }
+
+    @Factory
+    public static <K,V> Matcher<Map<K,V>> hasValue(Matcher<V> valueMatcher) {
+        return hasEntry(IsAnything.<K>anything(), valueMatcher);
+    }
+
+    @Factory
+    public static <K,V> Matcher<Map<K,V>> hasValue(V value) {
+        return hasValue(equalTo(value));
+    }
+}