Adding controllers for Controls

This CL adds the following controllers for dealing with Controls in
SystemUI:

* ControlsController - Handles favorites and communication with other
controllers
* ControlsBindingController - Handles binding to the different services
and comunication with them.
* ControlsProviderLifecycleManager - Handles binding with one service
and forwards API calls to it.
* ControlsListingController - Handles finding and listing apps that
satisfy the service requirement

Additionally, this CL adds first versions of the management screen to
add or remove favorites. These are persisted.

To enable:
* adb shell settings put secure systemui.controls_available 1
* restart

To launch management activity:
* Enable controls
* adb shell am start
com.android.systemui/.controls.management.ControlsProviderSelectorActivity

Missing from this CL:
* Multi user support
* Documentation in the controller classes
* Graceful rebinding
* Throttling of Binder calls
* Better dumps

Test: atest com.android.systemui.controls
Test: manual testing of favorite management activities
Bug: 147732882

Change-Id: Ib4932b7f8fd3f2e3ee0ef1c28ddda1bec66c41e4
diff --git a/packages/SystemUI/tests/src/com/android/systemui/controls/management/ControlsListingControllerImplTest.kt b/packages/SystemUI/tests/src/com/android/systemui/controls/management/ControlsListingControllerImplTest.kt
new file mode 100644
index 0000000..f09aab9
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/controls/management/ControlsListingControllerImplTest.kt
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2020 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.systemui.controls.management
+
+import android.content.ComponentName
+import android.content.pm.ServiceInfo
+import android.testing.AndroidTestingRunner
+import androidx.test.filters.SmallTest
+import com.android.settingslib.applications.ServiceListing
+import com.android.settingslib.widget.CandidateInfo
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.util.concurrency.FakeExecutor
+import com.android.systemui.util.time.FakeSystemClock
+import org.junit.After
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentCaptor
+import org.mockito.Mock
+import org.mockito.Mockito
+import org.mockito.Mockito.`when`
+import org.mockito.Mockito.never
+import org.mockito.Mockito.reset
+import org.mockito.Mockito.verify
+import org.mockito.MockitoAnnotations
+
+@SmallTest
+@RunWith(AndroidTestingRunner::class)
+class ControlsListingControllerImplTest : SysuiTestCase() {
+
+    companion object {
+        private const val TEST_LABEL = "TEST_LABEL"
+        private const val TEST_PERMISSION = "permission"
+        fun <T> capture(argumentCaptor: ArgumentCaptor<T>): T = argumentCaptor.capture()
+        fun <T> any(): T = Mockito.any<T>()
+    }
+
+    @Mock
+    private lateinit var mockSL: ServiceListing
+    @Mock
+    private lateinit var mockCallback: ControlsListingController.ControlsListingCallback
+    @Mock
+    private lateinit var mockCallbackOther: ControlsListingController.ControlsListingCallback
+    @Mock
+    private lateinit var serviceInfo: ServiceInfo
+    @Mock
+    private lateinit var componentName: ComponentName
+
+    private val executor = FakeExecutor(FakeSystemClock())
+
+    private lateinit var controller: ControlsListingControllerImpl
+
+    private var serviceListingCallbackCaptor =
+            ArgumentCaptor.forClass(ServiceListing.Callback::class.java)
+
+    @Before
+    fun setUp() {
+        MockitoAnnotations.initMocks(this)
+
+        `when`(serviceInfo.componentName).thenReturn(componentName)
+
+        controller = ControlsListingControllerImpl(mContext, executor, mockSL)
+        verify(mockSL).addCallback(capture(serviceListingCallbackCaptor))
+    }
+
+    @After
+    fun tearDown() {
+        executor.advanceClockToLast()
+        executor.runAllReady()
+    }
+
+    @Test
+    fun testNoServices_notListening() {
+        assertTrue(controller.getCurrentServices().isEmpty())
+    }
+
+    @Test
+    fun testStartListening_onFirstCallback() {
+        controller.addCallback(mockCallback)
+        executor.runAllReady()
+
+        verify(mockSL).setListening(true)
+    }
+
+    @Test
+    fun testStartListening_onlyOnce() {
+        controller.addCallback(mockCallback)
+        controller.addCallback(mockCallbackOther)
+
+        executor.runAllReady()
+
+        verify(mockSL).setListening(true)
+    }
+
+    @Test
+    fun testStopListening_callbackRemoved() {
+        controller.addCallback(mockCallback)
+
+        executor.runAllReady()
+
+        controller.removeCallback(mockCallback)
+
+        executor.runAllReady()
+
+        verify(mockSL).setListening(false)
+    }
+
+    @Test
+    fun testStopListening_notWhileRemainingCallbacks() {
+        controller.addCallback(mockCallback)
+        controller.addCallback(mockCallbackOther)
+
+        executor.runAllReady()
+
+        controller.removeCallback(mockCallback)
+
+        executor.runAllReady()
+
+        verify(mockSL, never()).setListening(false)
+    }
+
+    @Test
+    fun testReloadOnFirstCallbackAdded() {
+        controller.addCallback(mockCallback)
+        executor.runAllReady()
+
+        verify(mockSL).reload()
+    }
+
+    @Test
+    fun testCallbackCalledWhenAdded() {
+        `when`(mockSL.reload()).then {
+            serviceListingCallbackCaptor.value.onServicesReloaded(emptyList())
+        }
+
+        controller.addCallback(mockCallback)
+        executor.runAllReady()
+        verify(mockCallback).onServicesUpdated(any())
+        reset(mockCallback)
+
+        controller.addCallback(mockCallbackOther)
+        executor.runAllReady()
+        verify(mockCallbackOther).onServicesUpdated(any())
+        verify(mockCallback, never()).onServicesUpdated(any())
+    }
+
+    @Test
+    fun testCallbackGetsList() {
+        val list = listOf(serviceInfo)
+        controller.addCallback(mockCallback)
+        controller.addCallback(mockCallbackOther)
+
+        @Suppress("unchecked_cast")
+        val captor: ArgumentCaptor<List<CandidateInfo>> =
+                ArgumentCaptor.forClass(List::class.java) as ArgumentCaptor<List<CandidateInfo>>
+
+        executor.runAllReady()
+        reset(mockCallback)
+        reset(mockCallbackOther)
+
+        serviceListingCallbackCaptor.value.onServicesReloaded(list)
+
+        executor.runAllReady()
+        verify(mockCallback).onServicesUpdated(capture(captor))
+        assertEquals(1, captor.value.size)
+        assertEquals(componentName.flattenToString(), captor.value[0].key)
+
+        verify(mockCallbackOther).onServicesUpdated(capture(captor))
+        assertEquals(1, captor.value.size)
+        assertEquals(componentName.flattenToString(), captor.value[0].key)
+    }
+}
\ No newline at end of file