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| 1 | +/* |
| 2 | + * Copyright (c) Facebook, Inc. and its affiliates. |
| 3 | + * |
| 4 | + * This source code is licensed under the MIT license found in the |
| 5 | + * LICENSE file in the root directory of this source tree. |
| 6 | + */ |
| 7 | + |
| 8 | +package com.facebook.react.modules.deviceinfo; |
| 9 | + |
| 10 | +import static org.fest.assertions.api.Assertions.assertThat; |
| 11 | +import static org.mockito.ArgumentMatchers.eq; |
| 12 | +import static org.mockito.Mockito.mock; |
| 13 | +import static org.mockito.Mockito.spy; |
| 14 | +import static org.mockito.Mockito.times; |
| 15 | +import static org.mockito.Mockito.verify; |
| 16 | +import static org.mockito.Mockito.verifyNoMoreInteractions; |
| 17 | +import static org.mockito.Mockito.when; |
| 18 | +import static org.powermock.api.mockito.PowerMockito.mockStatic; |
| 19 | + |
| 20 | +import com.facebook.react.bridge.Arguments; |
| 21 | +import com.facebook.react.bridge.CatalystInstance; |
| 22 | +import com.facebook.react.bridge.JavaOnlyMap; |
| 23 | +import com.facebook.react.bridge.ReactApplicationContext; |
| 24 | +import com.facebook.react.bridge.ReactTestHelper; |
| 25 | +import com.facebook.react.bridge.WritableMap; |
| 26 | +import com.facebook.react.modules.core.DeviceEventManagerModule; |
| 27 | +import com.facebook.react.uimanager.DisplayMetricsHolder; |
| 28 | +import java.util.Arrays; |
| 29 | +import java.util.List; |
| 30 | +import junit.framework.TestCase; |
| 31 | +import org.junit.After; |
| 32 | +import org.junit.Before; |
| 33 | +import org.junit.Rule; |
| 34 | +import org.junit.Test; |
| 35 | +import org.junit.runner.RunWith; |
| 36 | +import org.mockito.ArgumentCaptor; |
| 37 | +import org.mockito.invocation.InvocationOnMock; |
| 38 | +import org.mockito.stubbing.Answer; |
| 39 | +import org.powermock.core.classloader.annotations.PowerMockIgnore; |
| 40 | +import org.powermock.core.classloader.annotations.PrepareForTest; |
| 41 | +import org.powermock.modules.junit4.rule.PowerMockRule; |
| 42 | +import org.robolectric.RobolectricTestRunner; |
| 43 | +import org.robolectric.RuntimeEnvironment; |
| 44 | + |
| 45 | +@RunWith(RobolectricTestRunner.class) |
| 46 | +@PrepareForTest({Arguments.class, DisplayMetricsHolder.class}) |
| 47 | +@PowerMockIgnore({"org.mockito.*", "org.robolectric.*", "androidx.*", "android.*"}) |
| 48 | +public class DeviceInfoModuleTest extends TestCase { |
| 49 | + |
| 50 | + @Rule public PowerMockRule rule = new PowerMockRule(); |
| 51 | + |
| 52 | + private DeviceInfoModule mDeviceInfoModule; |
| 53 | + private DeviceEventManagerModule.RCTDeviceEventEmitter mRCTDeviceEventEmitterMock; |
| 54 | + |
| 55 | + private WritableMap fakePortraitDisplayMetrics; |
| 56 | + private WritableMap fakeLandscapeDisplayMetrics; |
| 57 | + |
| 58 | + @Before |
| 59 | + public void setUp() { |
| 60 | + initTestData(); |
| 61 | + |
| 62 | + mockStatic(DisplayMetricsHolder.class); |
| 63 | + |
| 64 | + mRCTDeviceEventEmitterMock = mock(DeviceEventManagerModule.RCTDeviceEventEmitter.class); |
| 65 | + |
| 66 | + final ReactApplicationContext context = |
| 67 | + spy(new ReactApplicationContext(RuntimeEnvironment.application)); |
| 68 | + CatalystInstance catalystInstanceMock = ReactTestHelper.createMockCatalystInstance(); |
| 69 | + context.initializeWithInstance(catalystInstanceMock); |
| 70 | + when(context.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)) |
| 71 | + .thenReturn(mRCTDeviceEventEmitterMock); |
| 72 | + |
| 73 | + mDeviceInfoModule = new DeviceInfoModule(context); |
| 74 | + } |
| 75 | + |
| 76 | + @After |
| 77 | + public void teardown() { |
| 78 | + DisplayMetricsHolder.setWindowDisplayMetrics(null); |
| 79 | + DisplayMetricsHolder.setScreenDisplayMetrics(null); |
| 80 | + } |
| 81 | + |
| 82 | + @Test |
| 83 | + public void test_itDoesNotEmitAnEvent_whenDisplayMetricsNotChanged() { |
| 84 | + givenDisplayMetricsHolderContains(fakePortraitDisplayMetrics); |
| 85 | + |
| 86 | + mDeviceInfoModule.getTypedExportedConstants(); |
| 87 | + mDeviceInfoModule.emitUpdateDimensionsEvent(); |
| 88 | + |
| 89 | + verifyNoMoreInteractions(mRCTDeviceEventEmitterMock); |
| 90 | + } |
| 91 | + |
| 92 | + @Test |
| 93 | + public void test_itEmitsOneEvent_whenDisplayMetricsChangedOnce() { |
| 94 | + givenDisplayMetricsHolderContains(fakePortraitDisplayMetrics); |
| 95 | + |
| 96 | + mDeviceInfoModule.getTypedExportedConstants(); |
| 97 | + givenDisplayMetricsHolderContains(fakeLandscapeDisplayMetrics); |
| 98 | + mDeviceInfoModule.emitUpdateDimensionsEvent(); |
| 99 | + |
| 100 | + verifyUpdateDimensionsEventsEmitted(mRCTDeviceEventEmitterMock, fakeLandscapeDisplayMetrics); |
| 101 | + } |
| 102 | + |
| 103 | + @Test |
| 104 | + public void test_itEmitsJustOneEvent_whenUpdateRequestedMultipleTimes() { |
| 105 | + givenDisplayMetricsHolderContains(fakePortraitDisplayMetrics); |
| 106 | + mDeviceInfoModule.getTypedExportedConstants(); |
| 107 | + givenDisplayMetricsHolderContains(fakeLandscapeDisplayMetrics); |
| 108 | + mDeviceInfoModule.emitUpdateDimensionsEvent(); |
| 109 | + mDeviceInfoModule.emitUpdateDimensionsEvent(); |
| 110 | + |
| 111 | + verifyUpdateDimensionsEventsEmitted(mRCTDeviceEventEmitterMock, fakeLandscapeDisplayMetrics); |
| 112 | + } |
| 113 | + |
| 114 | + @Test |
| 115 | + public void test_itEmitsMultipleEvents_whenDisplayMetricsChangedBetweenUpdates() { |
| 116 | + givenDisplayMetricsHolderContains(fakePortraitDisplayMetrics); |
| 117 | + |
| 118 | + mDeviceInfoModule.getTypedExportedConstants(); |
| 119 | + mDeviceInfoModule.emitUpdateDimensionsEvent(); |
| 120 | + givenDisplayMetricsHolderContains(fakeLandscapeDisplayMetrics); |
| 121 | + mDeviceInfoModule.emitUpdateDimensionsEvent(); |
| 122 | + givenDisplayMetricsHolderContains(fakePortraitDisplayMetrics); |
| 123 | + mDeviceInfoModule.emitUpdateDimensionsEvent(); |
| 124 | + givenDisplayMetricsHolderContains(fakeLandscapeDisplayMetrics); |
| 125 | + mDeviceInfoModule.emitUpdateDimensionsEvent(); |
| 126 | + |
| 127 | + verifyUpdateDimensionsEventsEmitted( |
| 128 | + mRCTDeviceEventEmitterMock, |
| 129 | + fakeLandscapeDisplayMetrics, |
| 130 | + fakePortraitDisplayMetrics, |
| 131 | + fakeLandscapeDisplayMetrics); |
| 132 | + } |
| 133 | + |
| 134 | + private static void givenDisplayMetricsHolderContains(final WritableMap fakeDisplayMetrics) { |
| 135 | + when(DisplayMetricsHolder.getDisplayMetricsWritableMap(1.0)).thenReturn(fakeDisplayMetrics); |
| 136 | + } |
| 137 | + |
| 138 | + private static void verifyUpdateDimensionsEventsEmitted( |
| 139 | + DeviceEventManagerModule.RCTDeviceEventEmitter emitter, WritableMap... expectedEvents) { |
| 140 | + List<WritableMap> expectedEventList = Arrays.asList(expectedEvents); |
| 141 | + ArgumentCaptor<WritableMap> captor = ArgumentCaptor.forClass(WritableMap.class); |
| 142 | + verify(emitter, times(expectedEventList.size())) |
| 143 | + .emit(eq("didUpdateDimensions"), captor.capture()); |
| 144 | + |
| 145 | + List<WritableMap> actualEvents = captor.getAllValues(); |
| 146 | + assertThat(actualEvents).isEqualTo(expectedEventList); |
| 147 | + } |
| 148 | + |
| 149 | + private void initTestData() { |
| 150 | + mockStatic(Arguments.class); |
| 151 | + when(Arguments.createMap()) |
| 152 | + .thenAnswer( |
| 153 | + new Answer<Object>() { |
| 154 | + @Override |
| 155 | + public Object answer(InvocationOnMock invocation) throws Throwable { |
| 156 | + return new JavaOnlyMap(); |
| 157 | + } |
| 158 | + }); |
| 159 | + |
| 160 | + fakePortraitDisplayMetrics = Arguments.createMap(); |
| 161 | + fakePortraitDisplayMetrics.putInt("width", 100); |
| 162 | + fakePortraitDisplayMetrics.putInt("height", 200); |
| 163 | + |
| 164 | + fakeLandscapeDisplayMetrics = Arguments.createMap(); |
| 165 | + fakeLandscapeDisplayMetrics.putInt("width", 200); |
| 166 | + fakeLandscapeDisplayMetrics.putInt("height", 100); |
| 167 | + } |
| 168 | +} |
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