Github user PascalSchumacher commented on a diff in the pull request:
https://github.com/apache/commons-text/pull/58#discussion_r129910754
--- Diff:
src/test/java/org/apache/commons/text/similarity/CosineSimilarityTest.java ---
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.commons.text.similarity;
+
+import org.junit.Test;
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
+
+/**
+ * Unit tests for class {@link CosineSimilarity}.
+ *
+ * @date 2017-07-26
+ * @see CosineSimilarity
+ *
+ **/
+public class CosineSimilarityTest{
+
+ @Test
+ public void testCosineSimilarityWithNonEmptyMap() {
+ CosineSimilarity cosineSimilarity = new CosineSimilarity();
+ Map<String, Integer> hashMap = new HashMap();
+ Integer integer = new Integer((-397));
+ hashMap.put("3J/$3.L", integer);
+ Map<CharSequence, Integer> hashMapTwo = new HashMap(hashMap);
+ Map<CharSequence, Integer> hashMapThree = new HashMap();
+
+ assertEquals(0.0, (double)
cosineSimilarity.cosineSimilarity(hashMapTwo, hashMapThree), 0.01);
+ }
+
+ @Test
--- End diff --
I think these tests should just use
`@Test(expected=IllegalArgumentException.class)` instead fo the try-catch-fail
construct.
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