IterableMatcher factory methods. #23

test-utils/src/main/java/org/dmfs/testutils/matchers/IterableMatcher.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2017 dmfs GmbH
+ *
+ *
+ * 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 org.dmfs.testutils.matchers;
+
+import org.hamcrest.Factory;
+import org.hamcrest.Matcher;
+import org.hamcrest.collection.IsIterableContainingInOrder;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+/**
+ * Factory methods for {@link Iterable} matchers.
+ *
+ * @author Gabor Keszthelyi
+ */
+public final class IterableMatcher
+{
+
+    /**
+     * {@link Matcher} that matches when the provided matchers match with the actual {@link Iterable}s elements in the same order.
+     */
+    @Factory
+    public static <E> Matcher<Iterable<? extends E>> iteratesTo(Iterable<Matcher<E>> itemMatchers)
+    {
+        List<Matcher<? super E>> matchers = new ArrayList<>();
+        for (Matcher<E> itemMatcher : itemMatchers)
+        {
+            matchers.add(itemMatcher);
+        }
+        return new IsIterableContainingInOrder<E>(matchers);
+    }
+
+
+    /**
+     * {@link Matcher} that matches when the actual {@link Iterable} has equal to elements in same order as the provided items.
+     */
+    @SafeVarargs
+    @Factory
+    public static <E> Matcher<Iterable<? extends E>> iteratesTo(E... items)
+    {
+        return IsIterableContainingInOrder.contains(items);
+    }
+
+
+    /**
+     * {@link Matcher} that matches when the provided item matchers match the actual {@link Iterable}s elements in the same order.
+     */
+    @SafeVarargs
+    @Factory
+    public static <E> Matcher<Iterable<? extends E>> iteratesTo(Matcher<E>... itemMatchers)
+    {
+        return IsIterableContainingInOrder.contains(itemMatchers);
+    }
+
+
+    private IterableMatcher()
+    {
+    }
+}