Add new file: test helper methods

java/android/OlmLibSdk/olm-sdk/src/androidTest/java/org/matrix/olm/TestHelper.java

+/*
+ * Copyright 2016 OpenMarket Ltd
+ *
+ * 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.matrix.olm;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.Iterator;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Helper class providing helper methods used in the Olm Android SDK unit tests.
+ */
+public class TestHelper {
+
+    /**
+     * Return the identity key {@link OlmAccount#JSON_KEY_IDENTITY_KEY} from the JSON object.
+     * @param aIdentityKeysObj JSON result of {@link OlmAccount#identityKeys()}
+     * @return identity key string if operation succeed, null otherwise
+     */
+    static public String getIdentityKey(JSONObject aIdentityKeysObj){
+        String idKey = null;
+
+        try {
+            idKey = aIdentityKeysObj.getString(OlmAccount.JSON_KEY_IDENTITY_KEY);
+        } catch (JSONException e) {
+            assertTrue("Exception MSg=" + e.getMessage(), false);
+        }
+        return idKey;
+    }
+
+    /**
+     * Return the fingerprint key {@link OlmAccount#JSON_KEY_FINGER_PRINT_KEY} from the JSON object.
+     * @param aIdentityKeysObj JSON result of {@link OlmAccount#identityKeys()}
+     * @return fingerprint key string if operation succeed, null otherwise
+     */
+    static public String getFingerprintKey(JSONObject aIdentityKeysObj){
+        String fingerprintKey = null;
+
+        try {
+            fingerprintKey = aIdentityKeysObj.getString(OlmAccount.JSON_KEY_FINGER_PRINT_KEY);
+        } catch (JSONException e) {
+            assertTrue("Exception MSg=" + e.getMessage(), false);
+        }
+        return fingerprintKey;
+    }
+
+    /**
+     * Return the first one time key from the JSON object.
+     * @param aIdentityKeysObj JSON result of {@link OlmAccount#oneTimeKeys()}
+     * @return one time key string if operation succeed, null otherwise
+     */
+    static public String getFirstOneTimeKey(JSONObject aIdentityKeysObj) {
+        String firstOneTimeKey = null;
+
+        try {
+            JSONObject generatedKeys = aIdentityKeysObj.getJSONObject(OlmAccount.JSON_KEY_ONE_TIME_KEY);
+            assertNotNull(OlmAccount.JSON_KEY_ONE_TIME_KEY + " object is missing", generatedKeys);
+
+            Iterator<String> generatedKeysIt = generatedKeys.keys();
+            if (generatedKeysIt.hasNext()) {
+                firstOneTimeKey = generatedKeys.getString(generatedKeysIt.next());
+            }
+        } catch (JSONException e) {
+            assertTrue("Exception Msg=" + e.getMessage(), false);
+        }
+        return firstOneTimeKey;
+    }
+}