1 files changed, 89 insertions, 0 deletions
diff --git a/predicate-search-core/src/test/java/com/yahoo/document/predicate/NegationTest.java b/predicate-search-core/src/test/java/com/yahoo/document/predicate/NegationTest.java
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index 00000000000..95666342152
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+++ b/predicate-search-core/src/test/java/com/yahoo/document/predicate/NegationTest.java
@@ -0,0 +1,89 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.document.predicate;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotSame;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+/**
+ * @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen Hult</a>
+ */
+public class NegationTest {
+
+    @Test
+    public void requireThatNegationIsAnOperator() {
+        assertTrue(PredicateOperator.class.isAssignableFrom(Negation.class));
+    }
+
+    @Test
+    public void requireThatAccessorsWork() {
+        Predicate foo = SimplePredicates.newString("foo");
+        Negation node = new Negation(foo);
+        assertSame(foo, node.getOperand());
+
+        Predicate bar = SimplePredicates.newString("bar");
+        node.setOperand(bar);
+        assertSame(bar, node.getOperand());
+    }
+
+    @Test
+    public void requireThatCloneIsImplemented() throws CloneNotSupportedException {
+        Negation node1 = new Negation(SimplePredicates.newString("a"));
+        Negation node2 = node1.clone();
+        assertEquals(node1, node2);
+        assertNotSame(node1, node2);
+        assertNotSame(node1.getOperand(), node2.getOperand());
+    }
+
+    @Test
+    public void requireThatHashCodeIsImplemented() {
+        Predicate predicate = SimplePredicates.newPredicate();
+        assertEquals(new Negation(predicate).hashCode(), new Negation(predicate).hashCode());
+    }
+
+    @Test
+    public void requireThatEqualsIsImplemented() {
+        Negation lhs = new Negation(SimplePredicates.newString("foo"));
+        assertTrue(lhs.equals(lhs));
+        assertFalse(lhs.equals(new Object()));
+
+        Negation rhs = new Negation(SimplePredicates.newString("bar"));
+        assertFalse(lhs.equals(rhs));
+        rhs.setOperand(SimplePredicates.newString("foo"));
+        assertTrue(lhs.equals(rhs));
+    }
+
+    @Test
+    public void requireThatChildIsMandatoryInConstructor() {
+        try {
+            new Negation(null);
+            fail();
+        } catch (NullPointerException e) {
+            assertEquals("operand", e.getMessage());
+        }
+    }
+
+    @Test
+    public void requireThatChildIsMandatoryInSetter() {
+        Predicate operand = SimplePredicates.newPredicate();
+        Negation negation = new Negation(operand);
+        try {
+            negation.setOperand(null);
+            fail();
+        } catch (NullPointerException e) {
+            assertEquals("operand", e.getMessage());
+        }
+        assertSame(operand, negation.getOperand());
+    }
+
+    @Test
+    public void requireThatChildIsIncludedInToString() {
+        assertEquals("not (foo)", new Negation(SimplePredicates.newString("foo")).toString());
+    }
+
+}