[fenix] Close https://github.com/mozilla-mobile/fenix/issues/20704: Add AppStore to Components

app/src/main/java/org/mozilla/fenix/components/AppStore.kt

@@ -0,0 +1,22 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.fenix.components
+
+import mozilla.components.lib.state.Middleware
+import mozilla.components.lib.state.Store
+import org.mozilla.fenix.components.appstate.AppAction
+import org.mozilla.fenix.components.appstate.AppState
+import org.mozilla.fenix.components.appstate.AppStoreReducer
+
+/**
+ * A [Store] that holds the [AppState] for the app and reduces [AppAction]s
+ * dispatched to the store.
+ *
+ * This store is not persisted to disk and is scoped to the life-cycle of the application.
+ */
+class AppStore(
+    initialState: AppState = AppState(),
+    middlewares: List<Middleware<AppState, AppAction>> = emptyList()
+) : Store<AppState, AppAction>(initialState, AppStoreReducer::reduce, middlewares)

app/src/main/java/org/mozilla/fenix/components/Components.kt

@@ -176,6 +176,7 @@ class Components(private val context: Context) {
     val appStartReasonProvider by lazyMonitored { AppStartReasonProvider() }
     val startupActivityLog by lazyMonitored { StartupActivityLog() }
     val startupStateProvider by lazyMonitored { StartupStateProvider(startupActivityLog, appStartReasonProvider) }
+    val appStore by lazyMonitored { AppStore() }
 }
 
 /**

app/src/main/java/org/mozilla/fenix/components/appstate/AppAction.kt

@@ -0,0 +1,15 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.fenix.components.appstate
+
+import mozilla.components.lib.state.Action
+import org.mozilla.fenix.components.AppStore
+
+/**
+ * [Action] implementation related to [AppStore].
+ */
+sealed class AppAction : Action {
+    data class UpdateInactiveExpanded(val expanded: Boolean) : AppAction()
+}

app/src/main/java/org/mozilla/fenix/components/appstate/AppState.kt

@@ -0,0 +1,17 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.fenix.components.appstate
+
+import mozilla.components.lib.state.State
+
+/**
+ * Value type that represents the state of the tabs tray.
+ *
+ * @property inactiveTabsExpanded A flag to know if the Inactive Tabs section of the Tabs Tray
+ * should be expanded when the tray is opened.
+ */
+data class AppState(
+    val inactiveTabsExpanded: Boolean = false
+) : State

app/src/main/java/org/mozilla/fenix/components/appstate/AppStoreReducer.kt

@@ -0,0 +1,17 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.fenix.components.appstate
+
+import org.mozilla.fenix.components.AppStore
+
+/**
+ * Reducer for [AppStore].
+ */
+internal object AppStoreReducer {
+    fun reduce(state: AppState, action: AppAction): AppState = when (action) {
+        is AppAction.UpdateInactiveExpanded ->
+            state.copy(inactiveTabsExpanded = action.expanded)
+    }
+}

app/src/test/java/org/mozilla/fenix/components/appstate/AppActionTest.kt

@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.fenix.components.appstate
+
+import mozilla.components.support.test.ext.joinBlocking
+import mozilla.components.support.test.middleware.CaptureActionsMiddleware
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.mozilla.fenix.components.AppStore
+
+class AppActionTest {
+
+    private val capture = CaptureActionsMiddleware<AppState, AppAction>()
+    private val store = AppStore(middlewares = listOf(capture))
+
+    @Test
+    fun `WHEN UpdateInactiveExpanded is dispatched THEN update inactiveTabsExpanded`() {
+        assertFalse(store.state.inactiveTabsExpanded)
+
+        store.dispatch(AppAction.UpdateInactiveExpanded(true)).joinBlocking()
+
+        assertTrue(store.state.inactiveTabsExpanded)
+    }
+}

app/src/test/java/org/mozilla/fenix/tabstray/browser/InactiveTabsControllerTest.kt

@@ -14,10 +14,14 @@ import mozilla.components.browser.tabstray.TabsTray
 import org.junit.Assert.assertEquals
 import mozilla.components.browser.state.state.createTab as createTabState
 import org.junit.Test
+import org.mozilla.fenix.components.AppStore
 import org.mozilla.fenix.components.metrics.Event
 import org.mozilla.fenix.components.metrics.MetricController
 
 class InactiveTabsControllerTest {
+
+    private val appStore = AppStore()
+
     @Test
     fun `WHEN expanded THEN notify filtered card`() {
         val filter: (TabSessionState) -> Boolean = { !it.content.private }
@@ -32,7 +36,7 @@ class InactiveTabsControllerTest {
         )
         val tray: TabsTray = mockk(relaxed = true)
         val tabsSlot = slot<List<TabSessionState>>()
-        val controller = InactiveTabsController(store, filter, tray, mockk(relaxed = true))
+        val controller = InactiveTabsController(store, appStore, filter, tray, mockk(relaxed = true))
 
         controller.updateCardExpansion(true)
 
@@ -47,7 +51,7 @@ class InactiveTabsControllerTest {
         val metrics: MetricController = mockk(relaxed = true)
         val store = BrowserStore(BrowserState())
         val controller = InactiveTabsController(
-            store, mockk(relaxed = true), mockk(relaxed = true), metrics
+            store, appStore, mockk(relaxed = true), mockk(relaxed = true), metrics
         )
 
         controller.updateCardExpansion(true)
@@ -60,7 +64,7 @@ class InactiveTabsControllerTest {
         val metrics: MetricController = mockk(relaxed = true)
         val store = BrowserStore(BrowserState())
         val controller = InactiveTabsController(
-            store, mockk(relaxed = true), mockk(relaxed = true), metrics
+            store, appStore, mockk(relaxed = true), mockk(relaxed = true), metrics
         )
 
         controller.updateCardExpansion(false)