Merge "Add a test for ConnectivityFrameworkInitializer"

tests/cts/net/src/android/net/cts/ConnectivityFrameworkInitializerTest.kt

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2021 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 android.net.cts
+
+import android.Manifest.permission.MANAGE_TEST_NETWORKS
+import android.net.ConnectivityDiagnosticsManager
+import android.net.ConnectivityFrameworkInitializer
+import android.net.ConnectivityManager
+import android.net.TestNetworkManager
+import android.os.Build
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.runAsShell
+import org.junit.Test
+import org.junit.runner.RunWith
+import kotlin.test.assertNotNull
+
+@RunWith(DevSdkIgnoreRunner::class)
+// ConnectivityFrameworkInitializer was added in S
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
+class ConnectivityFrameworkInitializerTest {
+    @Test
+    fun testServicesRegistered() {
+        val ctx = InstrumentationRegistry.getInstrumentation().context as android.content.Context
+        assertNotNull(ctx.getSystemService(ConnectivityManager::class.java),
+                "ConnectivityManager not registered")
+        assertNotNull(ctx.getSystemService(ConnectivityDiagnosticsManager::class.java),
+                "ConnectivityDiagnosticsManager not registered")
+
+        runAsShell(MANAGE_TEST_NETWORKS) {
+            assertNotNull(ctx.getSystemService(TestNetworkManager::class.java),
+                "TestNetworkManager not registered")
+        }
+        // Do not test for DnsResolverServiceManager as it is internal to Connectivity, and
+        // CTS does not have permission to get it anyway.
+    }
+
+    // registerServiceWrappers can only be called during initialization and should throw otherwise
+    @Test(expected = IllegalStateException::class)
+    fun testThrows() {
+        ConnectivityFrameworkInitializer.registerServiceWrappers()
+    }
+}