Add java8 unit test examples.

Author: javadev

src/test/java8/com/github/underscore/ChainingTest.java

@@ -0,0 +1,68 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright 2015 Valentyn Kolesnikov
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package com.github.underscore;
+
+import java.lang.reflect.Method;
+import java.util.*;
+import org.junit.Test;
+import static java.util.Arrays.asList;
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Underscore library unit test.
+ *
+ * @author Valentyn Kolesnikov
+ */
+public class ChainingTest {
+
+/*
+var stooges = [{name: 'curly', age: 25}, {name: 'moe', age: 21}, {name: 'larry', age: 23}];
+var youngest = _.chain(stooges)
+  .sortBy(function(stooge){ return stooge.age; })
+  .map(function(stooge){ return stooge.name + ' is ' + stooge.age; })
+  .first()
+  .value();
+=> "moe is 21"
+*/
+    @Test
+    @SuppressWarnings("unchecked")
+    public void chain() {
+        final List<Map<String, Object>> stooges = new ArrayList<Map<String, Object>>() { {
+            add(new LinkedHashMap<String, Object>() { { put("name", "curly"); put("age", 25); } });
+            add(new LinkedHashMap<String, Object>() { { put("name", "moe"); put("age", 21); } });
+            add(new LinkedHashMap<String, Object>() { { put("name", "larry"); put("age", 23); } });
+        } };
+        final String youngest = $.chain(stooges)
+            .sortBy((item) -> {
+                    return (Integer) ((Map<String, Object>) item).get("age");
+                }
+            )
+            .map((item) -> {
+                    return item.get("name") + " is " + item.get("age");
+                }
+            )
+            .first().item();
+        assertEquals("moe is 21", youngest);
+    }
+}

src/test/java8/com/github/underscore/UnderscoreTest.java

@@ -0,0 +1,53 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright 2015 Valentyn Kolesnikov
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package com.github.underscore;
+
+import java.util.*;
+import org.junit.Test;
+import static java.util.Arrays.asList;
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+/**
+ * Underscore library unit test.
+ *
+ * @author Valentyn Kolesnikov
+ */
+public class UnderscoreTest {
+
+    @Test
+    @SuppressWarnings("unchecked")
+    public void stackoverflow() {
+        // http://stackoverflow.com/questions/109383/how-to-sort-a-mapkey-value-on-the-values-in-java?rq=1
+        assertEquals("{D=67.3, B=67.4, C=67.4, A=99.5}", $.chain((new LinkedHashMap<String, Double>() { {
+            put("A", 99.5);
+            put("B", 67.4);
+            put("C", 67.4);
+            put("D", 67.3);
+        } }).entrySet()).sortBy((item) -> item.getValue()).toMap().item().toString());
+    }
+}