BUG-7464: Split TrieMap into read-only and read-write

[yangtools.git] / third-party / triemap / src / test / java / org / opendaylight / yangtools / triemap / SnapshotTest.java

diff --git a/third-party/triemap/src/test/java/org/opendaylight/yangtools/triemap/SnapshotTest.java b/third-party/triemap/src/test/java/org/opendaylight/yangtools/triemap/SnapshotTest.java
new file mode 100644 (file)
index 0000000..bed17f2
--- /dev/null
+++ b/third-party/triemap/src/test/java/org/opendaylight/yangtools/triemap/SnapshotTest.java
@@ -0,0 +1,69 @@
+/*
+ * (C) Copyright 2017 Pantheon Technologies, s.r.o. and others.
+ *
+ * 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.opendaylight.yangtools.triemap;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Map;
+import org.junit.Before;
+import org.junit.Test;
+
+public class SnapshotTest {
+    private TrieMap<String, String> map;
+
+    @Before
+    public void setUp() {
+        map = TrieMap.create();
+        map.put("k1", "v1");
+        map.put("k2", "v2");
+    }
+
+    private static void assertMutableIsolation(final Map<String, String> m1, final Map<String, String> m2) {
+        assertTrue(m2.containsKey("k1"));
+        assertTrue(m2.containsKey("k2"));
+
+        m1.remove("k1");
+        assertFalse(m1.containsKey("k1"));
+        assertTrue(m2.containsKey("k1"));
+
+        m2.remove("k2");
+        assertFalse(m1.containsKey("k1"));
+        assertTrue(m2.containsKey("k1"));
+
+        assertEquals(1, m1.size());
+        assertEquals(1, m2.size());
+    }
+
+    @Test
+    public void testMutableSnapshotIsolation() {
+        assertMutableIsolation(map, map.mutableSnapshot());
+    }
+
+    @Test
+    public void testMutableSnapshotIsolationAcrossImmutable() {
+        final TrieMap<String, String> snap = map.immutableSnapshot();
+        assertTrue(snap.containsKey("k1"));
+        assertTrue(snap.containsKey("k2"));
+
+        assertMutableIsolation(map, snap.mutableSnapshot());
+
+        assertTrue(snap.containsKey("k1"));
+        assertTrue(snap.containsKey("k2"));
+
+    }
+}