1 files changed, 110 insertions, 0 deletions
diff --git a/tests/src/com/android/customization/model/grid/ui/viewmodel/GridScreenViewModelTest.kt b/tests/src/com/android/customization/model/grid/ui/viewmodel/GridScreenViewModelTest.kt
new file mode 100644
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+++ b/tests/src/com/android/customization/model/grid/ui/viewmodel/GridScreenViewModelTest.kt
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2023 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.customization.model.grid.ui.viewmodel
+
+import androidx.test.filters.SmallTest
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.customization.model.grid.data.repository.FakeGridRepository
+import com.android.customization.model.grid.domain.interactor.GridInteractor
+import com.android.customization.model.grid.domain.interactor.GridSnapshotRestorer
+import com.android.wallpaper.picker.option.ui.viewmodel.OptionItemViewModel
+import com.android.wallpaper.testing.FakeSnapshotStore
+import com.android.wallpaper.testing.collectLastValue
+import com.google.common.truth.Truth.assertThat
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.test.TestScope
+import kotlinx.coroutines.test.runTest
+import org.junit.Before
+import org.junit.Ignore
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+
+@OptIn(ExperimentalCoroutinesApi::class)
+@SmallTest
+@RunWith(JUnit4::class)
+class GridScreenViewModelTest {
+
+    private lateinit var underTest: GridScreenViewModel
+    private lateinit var testScope: TestScope
+    private lateinit var interactor: GridInteractor
+    private lateinit var store: FakeSnapshotStore
+
+    @Before
+    fun setUp() {
+        testScope = TestScope()
+        store = FakeSnapshotStore()
+        interactor =
+            GridInteractor(
+                applicationScope = testScope.backgroundScope,
+                repository =
+                    FakeGridRepository(
+                        scope = testScope.backgroundScope,
+                        initialOptionCount = 4,
+                    ),
+                snapshotRestorer = {
+                    GridSnapshotRestorer(
+                            interactor = interactor,
+                        )
+                        .apply { runBlocking { setUpSnapshotRestorer(store) } }
+                }
+            )
+
+        underTest =
+            GridScreenViewModel(
+                context = InstrumentationRegistry.getInstrumentation().targetContext,
+                interactor = interactor,
+            )
+    }
+
+    @Test
+    @Ignore("b/270371382")
+    fun clickOnItem_itGetsSelected() =
+        testScope.runTest {
+            val optionItemsValueProvider = collectLastValue(underTest.optionItems)
+            var optionItemsValue = checkNotNull(optionItemsValueProvider.invoke())
+            assertThat(optionItemsValue).hasSize(4)
+            assertThat(getSelectedIndex(optionItemsValue)).isEqualTo(0)
+            assertThat(getOnClick(optionItemsValue[0])).isNull()
+
+            val item1OnClickedValue = getOnClick(optionItemsValue[1])
+            assertThat(item1OnClickedValue).isNotNull()
+            item1OnClickedValue?.invoke()
+
+            optionItemsValue = checkNotNull(optionItemsValueProvider.invoke())
+            assertThat(optionItemsValue).hasSize(4)
+            assertThat(getSelectedIndex(optionItemsValue)).isEqualTo(1)
+            assertThat(getOnClick(optionItemsValue[0])).isNotNull()
+            assertThat(getOnClick(optionItemsValue[1])).isNull()
+        }
+
+    private fun TestScope.getSelectedIndex(
+        optionItems: List<OptionItemViewModel<GridIconViewModel>>
+    ): Int {
+        return optionItems.indexOfFirst { optionItem ->
+            collectLastValue(optionItem.isSelected).invoke() == true
+        }
+    }
+
+    private fun TestScope.getOnClick(
+        optionItem: OptionItemViewModel<GridIconViewModel>
+    ): (() -> Unit)? {
+        return collectLastValue(optionItem.onClicked).invoke()
+    }
+}