Add junit coverage for 2 RequestContext classes

Introduce junit-tests for 2 similar RequestContext classes

Change-Id: If8a80e983c24214eccd16f8ad7432e98de61d528
Issue-ID: APPC-824
Signed-off-by: Irwin Dunietz <id1681@att.com>

1 files changed, 179 insertions, 0 deletions

diff --git a/appc-adapters/appc-rest-adapter/appc-rest-adapter-bundle/src/test/java/org/onap/appc/adapter/rest/impl/RequestContextTest.java b/appc-adapters/appc-rest-adapter/appc-rest-adapter-bundle/src/test/java/org/onap/appc/adapter/rest/impl/RequestContextTest.java
new file mode 100644
index 000000000..0088252f8
--- /dev/null
+++ b/appc-adapters/appc-rest-adapter/appc-rest-adapter-bundle/src/test/java/org/onap/appc/adapter/rest/impl/RequestContextTest.java
@@ -0,0 +1,179 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
+ * =============================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+
+package org.onap.appc.adapter.rest.impl;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.appc.Constants;
+import org.onap.appc.adapter.rest.impl.RequestContext;
+import org.onap.appc.configuration.Configuration;
+import org.onap.appc.configuration.ConfigurationFactory;
+import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
+
+/**
+ * Test the RequestContext object
+ * <p>
+ * The request context is used to track retries, recovery attempts, and time to live of the
+ * processing of a request.
+ * </p>
+ */
+
+public class RequestContextTest {
+
+    private RequestContext rc;
+    private Configuration config = ConfigurationFactory.getConfiguration();
+
+    /**
+     * Set up the test environment by forcing the retry delay and limit to small values for the test
+     * and setting up the request context object.
+     */
+    @Before
+    public void setup() {
+        config.setProperty(Constants.PROPERTY_RETRY_DELAY, "1");
+        config.setProperty(Constants.PROPERTY_RETRY_LIMIT, "3");
+        rc = new RequestContext(null);
+        rc.setTimeToLiveSeconds(2);
+    }
+
+    /**
+     * Ensure that we set up the property correctly
+     */
+    @Test
+    public void testRetryDelayProperty() {
+        assertEquals(1, rc.getRetryDelay());
+    }
+
+    /**
+     * Ensure that we set up the property correctly
+     */
+    @Test
+    public void testRetryLimitProperty() {
+        assertEquals(3, rc.getRetryLimit());
+    }
+
+    /**
+     * This test ensures that the retry attempt counter is zero on a new context
+     */
+    @Test
+    public void testRetryCountNoRetries() {
+        assertEquals(0, rc.getAttempts());
+    }
+
+    /**
+     * Test that the delay is accurate
+     */
+    @Test
+    public void testDelay() {
+        long future = System.currentTimeMillis() + (rc.getRetryDelay() * 1000L);
+
+        rc.delay();
+
+        assertTrue(System.currentTimeMillis() >= future);
+    }
+
+    /**
+     * The RequestContext tracks the number of retry attempts against the limit.
+     * This unannotated test verifies that the maximum number of retries can be attempted.
+     * With argument testPastLimit set to true, it demonstrates going beyond the limit fails.
+     */
+    private void internalTestCanRetry(boolean testPastLimit) {
+        assertEquals(0, rc.getAttempts());
+        assertTrue(rc.attempt());
+        assertFalse(rc.isFailed());
+        assertEquals(1, rc.getAttempts());
+        assertTrue(rc.attempt());
+        assertFalse(rc.isFailed());
+        assertEquals(2, rc.getAttempts());
+        assertTrue(rc.attempt());
+        assertFalse(rc.isFailed());
+        assertEquals(3, rc.getAttempts());
+        if (testPastLimit) {
+            assertFalse(rc.attempt());
+            assertTrue(rc.isFailed());
+            assertEquals(3, rc.getAttempts());
+            assertFalse(rc.attempt());
+            assertTrue(rc.isFailed());
+            assertEquals(3, rc.getAttempts());
+        }
+    }
+
+    /**
+     * The RequestContext tracks the number of retry attempts against the limit. This test verifies
+     * that tracking logic works correctly.
+     */
+    @Test
+    public void testCanRetry() {
+        internalTestCanRetry(true);
+    }
+
+    /**
+     * The same RequestContext is used throughout the processing, and retries need to be reset once
+     * successfully connected so that any earlier (successful) recoveries are not considered when
+     * performing any new future recoveries. This test ensures that a reset clears the retry counter
+     * and that we can attempt retries again up to the limit.
+     */
+    @Test
+    public void testResetAndCanRetry() {
+        internalTestCanRetry(false);
+        rc.reset();
+        internalTestCanRetry(true);
+    }
+
+    /**
+     * This test is used to test tracking of time to live for the request context. Because time is
+     * inexact, the assertions can only be ranges of values, such as at least some value or greater.
+     * The total duration tracking in the request context is only updated on each call to
+     * {@link RequestContext#isAlive()}. Also, durations are NOT affected by calls to reset.
+     */
+    @Test
+    public void testTimeToLive() {
+        assertTrue(rc.getTotalDuration() == 0L);
+        assertTrue(rc.isAlive());
+        rc.reset();
+        rc.delay();
+        assertTrue(rc.isAlive());
+        assertTrue(rc.getTotalDuration() >= 1000L);
+        rc.reset();
+        rc.delay();
+        rc.isAlive();
+        assertTrue(rc.getTotalDuration() >= 2000L);
+        rc.reset();
+        rc.delay();
+        assertFalse(rc.isAlive());
+        assertTrue(rc.getTotalDuration() >= 3000L);
+    }
+
+    /**
+     * Demonstrate setSvcLogicContext/getSvcLogicContext work as expected
+     */
+    @Test
+    public void testGetSvcLogicContext() {
+        assertNull(rc.getSvcLogicContext());
+        SvcLogicContext slc = new SvcLogicContext();
+        rc.setSvcLogicContext(slc);
+        assertEquals(slc, rc.getSvcLogicContext());
+    }
+}