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Diffstat (limited to 'src/test/java/org/apache/commons/lang3/tuple/ImmutableTripleTest.java')
-rw-r--r-- | src/test/java/org/apache/commons/lang3/tuple/ImmutableTripleTest.java | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/lang3/tuple/ImmutableTripleTest.java b/src/test/java/org/apache/commons/lang3/tuple/ImmutableTripleTest.java new file mode 100644 index 000000000..c51d9b9d5 --- /dev/null +++ b/src/test/java/org/apache/commons/lang3/tuple/ImmutableTripleTest.java @@ -0,0 +1,202 @@ +/* + * 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.lang3.tuple; + +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertNotEquals; +import static org.junit.jupiter.api.Assertions.assertNotNull; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertSame; +import static org.junit.jupiter.api.Assertions.assertThrows; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.Iterator; +import java.util.Map.Entry; +import java.util.TreeMap; + +import org.apache.commons.lang3.AbstractLangTest; +import org.apache.commons.lang3.SerializationUtils; +import org.junit.jupiter.api.Test; + +/** + * Test the Triple class. + */ +public class ImmutableTripleTest extends AbstractLangTest { + + @Test + public void testBasic() { + final ImmutableTriple<Integer, String, Boolean> triple = new ImmutableTriple<>(0, "foo", Boolean.TRUE); + assertEquals(0, triple.left.intValue()); + assertEquals(0, triple.getLeft().intValue()); + assertEquals("foo", triple.middle); + assertEquals("foo", triple.getMiddle()); + assertEquals(Boolean.TRUE, triple.right); + assertEquals(Boolean.TRUE, triple.getRight()); + final ImmutableTriple<Object, String, Integer> triple2 = new ImmutableTriple<>(null, "bar", 42); + assertNull(triple2.left); + assertNull(triple2.getLeft()); + assertEquals("bar", triple2.middle); + assertEquals("bar", triple2.getMiddle()); + assertEquals(Integer.valueOf(42), triple2.right); + assertEquals(Integer.valueOf(42), triple2.getRight()); + } + + @Test + public void testEmptyArrayGenerics() { + final ImmutableTriple<Integer, String, Boolean>[] empty = ImmutableTriple.emptyArray(); + assertEquals(0, empty.length); + } + + @Test + public void testEmptyArrayLength() { + @SuppressWarnings("unchecked") + final ImmutableTriple<Integer, String, Boolean>[] empty = (ImmutableTriple<Integer, String, Boolean>[]) ImmutableTriple.EMPTY_ARRAY; + assertEquals(0, empty.length); + } + + @Test + public void testEquals() { + assertEquals(ImmutableTriple.of(null, "foo", 42), ImmutableTriple.of(null, "foo", 42)); + assertNotEquals(ImmutableTriple.of("foo", 0, Boolean.TRUE), ImmutableTriple.of("foo", null, null)); + assertNotEquals(ImmutableTriple.of("foo", "bar", "baz"), ImmutableTriple.of("xyz", "bar", "blo")); + + final ImmutableTriple<String, String, String> p = ImmutableTriple.of("foo", "bar", "baz"); + assertEquals(p, p); + assertNotEquals(p, new Object()); + } + + @Test + public void testHashCode() { + assertEquals(ImmutableTriple.of(null, "foo", Boolean.TRUE).hashCode(), ImmutableTriple.of(null, "foo", Boolean.TRUE).hashCode()); + } + + @Test + public void testNullTripleEquals() { + assertEquals(ImmutableTriple.nullTriple(), ImmutableTriple.nullTriple()); + } + + @Test + public void testNullTripleLeft() { + assertNull(ImmutableTriple.nullTriple().getLeft()); + } + + @Test + public void testNullTripleMiddle() { + assertNull(ImmutableTriple.nullTriple().getMiddle()); + } + + @Test + public void testNullTripleRight() { + assertNull(ImmutableTriple.nullTriple().getRight()); + } + + @Test + public void testNullTripleSame() { + assertSame(ImmutableTriple.nullTriple(), ImmutableTriple.nullTriple()); + } + + @Test + public void testNullTripleTyped() { + // No compiler warnings + // How do we assert that? + final ImmutableTriple<String, String, String> triple = ImmutableTriple.nullTriple(); + assertNotNull(triple); + } + + @Test + public void testOfNonNull() { + assertThrows(NullPointerException.class, () -> ImmutableTriple.ofNonNull(null, null, null)); + assertThrows(NullPointerException.class, () -> ImmutableTriple.ofNonNull(null, null, "z")); + assertThrows(NullPointerException.class, () -> ImmutableTriple.ofNonNull(null, "y", "z")); + assertThrows(NullPointerException.class, () -> ImmutableTriple.ofNonNull("x", null, null)); + assertThrows(NullPointerException.class, () -> ImmutableTriple.ofNonNull("x", "y", null)); + final ImmutableTriple<String, String, String> pair = ImmutableTriple.ofNonNull("x", "y", "z"); + assertEquals("x", pair.left); + assertEquals("y", pair.middle); + assertEquals("z", pair.right); + } + + @Test + public void testSerialization() throws Exception { + final ImmutableTriple<Integer, String, Boolean> origTriple = ImmutableTriple.of(0, "foo", Boolean.TRUE); + final ImmutableTriple<Integer, String, Boolean> deserializedTriple = SerializationUtils.roundtrip(origTriple); + assertEquals(origTriple, deserializedTriple); + assertEquals(origTriple.hashCode(), deserializedTriple.hashCode()); + } + + @Test + public void testToString() { + assertEquals("(null,null,null)", ImmutableTriple.of(null, null, null).toString()); + assertEquals("(null,two,null)", ImmutableTriple.of(null, "two", null).toString()); + assertEquals("(one,null,null)", ImmutableTriple.of("one", null, null).toString()); + assertEquals("(one,two,null)", ImmutableTriple.of("one", "two", null).toString()); + assertEquals("(null,two,three)", ImmutableTriple.of(null, "two", "three").toString()); + assertEquals("(one,null,three)", ImmutableTriple.of("one", null, "three").toString()); + assertEquals("(one,two,three)", MutableTriple.of("one", "two", "three").toString()); + } + + @Test + public void testTripleOf() { + final ImmutableTriple<Integer, String, Boolean> triple = ImmutableTriple.of(0, "foo", Boolean.FALSE); + assertEquals(0, triple.left.intValue()); + assertEquals(0, triple.getLeft().intValue()); + assertEquals("foo", triple.middle); + assertEquals("foo", triple.getMiddle()); + assertEquals(Boolean.FALSE, triple.right); + assertEquals(Boolean.FALSE, triple.getRight()); + final ImmutableTriple<Object, String, Boolean> triple2 = ImmutableTriple.of(null, "bar", Boolean.TRUE); + assertNull(triple2.left); + assertNull(triple2.getLeft()); + assertEquals("bar", triple2.middle); + assertEquals("bar", triple2.getMiddle()); + assertEquals(Boolean.TRUE, triple2.right); + assertEquals(Boolean.TRUE, triple2.getRight()); + } + + @Test + public void testUseAsKeyOfHashMap() { + final HashMap<ImmutableTriple<Object, Object, Object>, String> map = new HashMap<>(); + final Object o1 = new Object(); + final Object o2 = new Object(); + final Object o3 = new Object(); + final ImmutableTriple<Object, Object, Object> key1 = ImmutableTriple.of(o1, o2, o3); + final String value1 = "a1"; + map.put(key1, value1); + assertEquals(value1, map.get(key1)); + assertEquals(value1, map.get(ImmutableTriple.of(o1, o2, o3))); + } + + @Test + public void testUseAsKeyOfTreeMap() { + final TreeMap<ImmutableTriple<Integer, Integer, Integer>, String> map = new TreeMap<>(); + map.put(ImmutableTriple.of(0, 1, 2), "012"); + map.put(ImmutableTriple.of(0, 1, 1), "011"); + map.put(ImmutableTriple.of(0, 0, 1), "001"); + final ArrayList<ImmutableTriple<Integer, Integer, Integer>> expected = new ArrayList<>(); + expected.add(ImmutableTriple.of(0, 0, 1)); + expected.add(ImmutableTriple.of(0, 1, 1)); + expected.add(ImmutableTriple.of(0, 1, 2)); + final Iterator<Entry<ImmutableTriple<Integer, Integer, Integer>, String>> it = map.entrySet().iterator(); + for (final ImmutableTriple<Integer, Integer, Integer> item : expected) { + final Entry<ImmutableTriple<Integer, Integer, Integer>, String> entry = it.next(); + assertEquals(item, entry.getKey()); + assertEquals(item.getLeft() + "" + item.getMiddle() + "" + item.getRight(), entry.getValue()); + } + } +} + |