hotspot2: maintain a copy of PasspointConfiguration in PasspointProvider

This avoids the Passpoint configuration maintained in PasspointProvider
from being updated by others.

Bug: 32714562
Test: frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Change-Id: I7101ae0c1bcf70585343e6da5608d7fe1267e689

1 files changed, 93 insertions, 0 deletions

diff --git a/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointProviderTest.java b/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointProviderTest.java
new file mode 100644
index 000000000..3ff01bc30
--- /dev/null
+++ b/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointProviderTest.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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 com.android.server.wifi.hotspot2;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import android.net.wifi.hotspot2.PasspointConfiguration;
+import android.net.wifi.hotspot2.pps.HomeSP;
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.junit.Test;
+
+/**
+ * Unit tests for {@link com.android.server.wifi.hotspot2.PasspointProvider}.
+ */
+@SmallTest
+public class PasspointProviderTest {
+    PasspointProvider mProvider;
+
+    /**
+     * Verify that the configuration associated with the provider is the same or not the same
+     * as the expected configuration.
+     *
+     * @param expectedConfig The expected configuration
+     * @param equals Flag indicating equality or inequality check
+     */
+    private void verifyInstalledConfig(PasspointConfiguration expectedConfig, boolean equals) {
+        PasspointConfiguration actualConfig = mProvider.getConfig();
+        if (equals) {
+            assertTrue(actualConfig.equals(expectedConfig));
+        } else {
+            assertFalse(actualConfig.equals(expectedConfig));
+        }
+    }
+
+    /**
+     * Verify that modification to the configuration used for creating PasspointProvider
+     * will not change the configuration stored inside the PasspointProvider.
+     *
+     * @throws Exception
+     */
+    @Test
+    public void verifyModifyOriginalConfig() throws Exception {
+        // Create a dummy PasspointConfiguration.
+        PasspointConfiguration config = new PasspointConfiguration();
+        config.homeSp = new HomeSP();
+        config.homeSp.fqdn = "test1";
+        mProvider = new PasspointProvider(config);
+        verifyInstalledConfig(config, true);
+
+        // Modify the original configuration, the configuration maintained by the provider
+        // should be unchanged.
+        config.homeSp.fqdn = "test2";
+        verifyInstalledConfig(config, false);
+    }
+
+    /**
+     * Verify that modification to the configuration retrieved from the PasspointProvider
+     * will not change the configuration stored inside the PasspointProvider.
+     *
+     * @throws Exception
+     */
+    @Test
+    public void verifyModifyRetrievedConfig() throws Exception {
+        // Create a dummy PasspointConfiguration.
+        PasspointConfiguration config = new PasspointConfiguration();
+        config.homeSp = new HomeSP();
+        config.homeSp.fqdn = "test1";
+        mProvider = new PasspointProvider(config);
+        verifyInstalledConfig(config, true);
+
+        // Modify the retrieved configuration, verify the configuration maintained by the
+        // provider should be unchanged.
+        PasspointConfiguration retrievedConfig = mProvider.getConfig();
+        retrievedConfig.homeSp.fqdn = "test2";
+        verifyInstalledConfig(retrievedConfig, false);
+    }
+}