├── .github └── workflows │ ├── main.yml │ └── pull_requests.yml ├── .gitignore ├── .idea ├── .name ├── codeStyles │ ├── Project.xml │ └── codeStyleConfig.xml ├── gradle.xml ├── misc.xml ├── runConfigurations.xml └── vcs.xml ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── layoutSnapshots │ ├── e1_flat_layout.json │ ├── e1_flat_layout_240x320.json │ ├── e2_nested_layout.json │ └── e2_nested_layout_only_specified views.json └── src │ ├── main │ ├── AndroidManifest.xml │ └── res │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ └── ic_launcher_background.xml │ │ ├── layout │ │ ├── e1_flat_layout.xml │ │ └── e2_nested_layout.xml │ │ ├── mipmap-anydpi-v26 │ │ ├── ic_launcher.xml │ │ └── ic_launcher_round.xml │ │ ├── mipmap-hdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-mdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ └── values │ │ ├── colors.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── redapparat │ └── demo │ └── DemoLayoutTest.kt ├── build.gradle ├── deploy.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── layoutverifier-tests ├── .gitignore ├── build.gradle ├── layoutSnapshots │ ├── flat_layout.json │ ├── flat_layout__small_screen.json │ ├── flat_layout__view_subset.json │ ├── generated_view_id.json │ ├── nested_layout.json │ ├── recycler_view__3_elements.json │ ├── recycler_view__50_elements.json │ └── schema_v3_features.json └── src │ ├── main │ ├── AndroidManifest.xml │ └── res │ │ └── layout │ │ ├── case_001.xml │ │ ├── case_002.xml │ │ ├── case_003.xml │ │ ├── case_004.xml │ │ ├── case_005.xml │ │ ├── case_006.xml │ │ ├── case_007.xml │ │ ├── case_008.xml │ │ ├── case_009.xml │ │ ├── case_014.xml │ │ └── case_015.xml │ └── test │ └── java │ └── com │ └── redapparat │ └── layoutverifier │ └── tests │ ├── LayoutVerifierIntegrationTests.kt │ └── view │ └── SimpleAdapter.kt ├── layoutverifier ├── .gitignore ├── build.gradle └── src │ ├── main │ ├── AndroidManifest.xml │ └── java │ │ └── com │ │ └── redapparat │ │ └── layoutverifier │ │ ├── LayoutMatcher.kt │ │ ├── LayoutVerifier.kt │ │ ├── Schemas.kt │ │ ├── extractor │ │ ├── CommonExtractor.kt │ │ ├── CompositeFeatureExtractor.kt │ │ ├── DefaultFeatures.kt │ │ ├── FeatureExtractor.kt │ │ └── content │ │ │ └── TextViewExtractor.kt │ │ └── serializer │ │ ├── GsonSerializer.kt │ │ └── Serializer.kt │ └── test │ └── java │ └── com │ └── redapparat │ └── layoutverifier │ ├── ExampleUnitTest.kt │ └── SchemasTest.kt └── settings.gradle /.github/workflows/main.yml: -------------------------------------------------------------------------------- 1 | name: Android Master CI 2 | 3 | on: 4 | push: 5 | branches: 6 | - 'master' 7 | 8 | jobs: 9 | test: 10 | name: Run Unit Tests 11 | runs-on: ubuntu-18.04 12 | 13 | steps: 14 | - uses: actions/checkout@v1 15 | - name: set up JDK 1.9 16 | uses: actions/setup-java@v1 17 | with: 18 | java-version: 1.9 19 | - name: Unit tests 20 | run: bash ./gradlew :layoutverifier-tests:testDebugUnitTest --stacktrace 21 | -------------------------------------------------------------------------------- /.github/workflows/pull_requests.yml: -------------------------------------------------------------------------------- 1 | name: Android Pull Request 2 | 3 | on: pull_request 4 | 5 | jobs: 6 | test: 7 | name: Run Unit Tests 8 | runs-on: ubuntu-18.04 9 | 10 | steps: 11 | - uses: actions/checkout@v1 12 | - name: set up JDK 1.9 13 | uses: actions/setup-java@v1 14 | with: 15 | java-version: 1.9 16 | - name: Unit tests 17 | run: bash ./gradlew :layoutverifier-tests:testDebugUnitTest --stacktrace 18 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | -------------------------------------------------------------------------------- /.idea/.name: -------------------------------------------------------------------------------- 1 | My Application -------------------------------------------------------------------------------- /.idea/codeStyles/Project.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 6 | 7 | 8 | 10 | 11 | 12 |
13 | 14 | 15 | 16 | xmlns:android 17 | 18 | ^$ 19 | 20 | 21 | 22 |
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24 | 25 | 26 | 27 | xmlns:.* 28 | 29 | ^$ 30 | 31 | 32 | BY_NAME 33 | 34 |
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36 | 37 | 38 | 39 | .*:id 40 | 41 | http://schemas.android.com/apk/res/android 42 | 43 | 44 | 45 |
46 |
47 | 48 | 49 | 50 | .*:name 51 | 52 | http://schemas.android.com/apk/res/android 53 | 54 | 55 | 56 |
57 |
58 | 59 | 60 | 61 | name 62 | 63 | ^$ 64 | 65 | 66 | 67 |
68 |
69 | 70 | 71 | 72 | style 73 | 74 | ^$ 75 | 76 | 77 | 78 |
79 |
80 | 81 | 82 | 83 | .* 84 | 85 | ^$ 86 | 87 | 88 | BY_NAME 89 | 90 |
91 |
92 | 93 | 94 | 95 | .* 96 | 97 | http://schemas.android.com/apk/res/android 98 | 99 | 100 | ANDROID_ATTRIBUTE_ORDER 101 | 102 |
103 |
104 | 105 | 106 | 107 | .* 108 | 109 | .* 110 | 111 | 112 | BY_NAME 113 | 114 |
115 | 116 | 117 | 118 | 119 | 121 | 122 | -------------------------------------------------------------------------------- /.idea/codeStyles/codeStyleConfig.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 5 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 21 | 22 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 9 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # LayoutVerifier 2 | 3 | ![](https://github.com/dmitry-zaitsev/LayoutVerifier/workflows/Android%20Master%20CI/badge.svg) 4 | 5 | Test Android layouts without device. LayoutVerifier is a Robolectric-based testing library which 6 | makes sure your Android screens are never broken again. 7 | 8 | **What's in the box:** 9 | - Library which makes sure that your Views are where they are supposed to be on the screen. 10 | - No need for an emulator. 11 | - No need for a build plugin or complex initial setup. Single library is all it takes. 12 | - As little as 3 lines to write a test. 13 | - Similar to Screenshot tests but much faster. 14 | 15 | ## Usage 16 | 17 | Get started by adding LayoutVerifier to your test dependencies and do some minimal configuration: 18 | 19 | ``` 20 | android { 21 | 22 | testOptions { 23 | unitTests { 24 | includeAndroidResources = true 25 | } 26 | } 27 | 28 | } 29 | 30 | dependencies { 31 | 32 | // Make sure Robolectric is included 33 | 34 | testImplementation 'com.redapparat:layoutverifier:1.1.2' 35 | } 36 | 37 | ``` 38 | 39 | Then, simply write a JUnit test: 40 | 41 | ``` 42 | // LayoutVerifier instance can be reused between tests 43 | val layoutVerifier = LayoutVerifier.Builder(getApplicationContext()) 44 | .build() 45 | 46 | // For each new test, pick a layout and call match() 47 | layoutVerifier 48 | .layout(R.layout.myLayout) 49 | .screenSize(600, 800) // optional: screen size in DP 50 | .views( // optional: those views which you care about, otherwise compare all views 51 | R.id.buyButton, 52 | R.id.totalPrice 53 | ) 54 | .match("test_case_name") // optional: arbitraty test case name which is unique to your module 55 | ``` 56 | 57 | That is it. On the first run the test will pass and save a pre-recorded version of the layout to 58 | disk. Make sure to keep this file and include it into your commits. 59 | 60 | ### Updating to a new version 61 | 62 | New versions of LayoutVerifier might include new attributes into view comparison which were not previously recorded in a snapshot file. LayoutVerifier takes care of backward compatibility and generates a new snapshot file if version update is detected. 63 | 64 | As such, after upgrading to a new version you might see that snapshot files have changed. That is expected, be sure to commit them as part of your repository as you would do for any new test. 65 | 66 | ## How it works 67 | 68 | ### Concept 69 | 70 | LayoutVerifier captures essential information about your View (i.e. elements position, 71 | text content) and then compares it to a pre-recorded "standard" version of the layout. If there is 72 | no pre-recorded version available, current state of the view is assumed to be correct and then 73 | recorded as a new standard for future comparisons. 74 | 75 | If you have worked with Screenshot-tests before all of that might sound familiar to you. 76 | LayoutVerifier uses a very similar concept but instead of comparing screenshots it compares data. 77 | 78 | ### How views are compared 79 | 80 | The following view features (aka attrbiutes) are compared: 81 | 82 | - Position (left, top, right, bottom) 83 | - Text (children of a `TextView`, including `EditText` and `Button`) 84 | - Enabled state 85 | - Clickable state 86 | 87 | Furthermore, new features can easily be added by providing a custom implementation of 88 | `FeatureExtractor`. 89 | 90 | ## License 91 | 92 | ``` 93 | Copyright 2020 LayoutVerifier 94 | 95 | Licensed under the Apache License, Version 2.0 (the "License"); 96 | you may not use this file except in compliance with the License. 97 | You may obtain a copy of the License at 98 | 99 | http://www.apache.org/licenses/LICENSE-2.0 100 | 101 | Unless required by applicable law or agreed to in writing, software 102 | distributed under the License is distributed on an "AS IS" BASIS, 103 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 104 | See the License for the specific language governing permissions and 105 | limitations under the License. 106 | ``` 107 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | apply plugin: 'kotlin-android' 3 | apply plugin: 'kotlin-android-extensions' 4 | 5 | android { 6 | compileSdkVersion 29 7 | buildToolsVersion "29.0.3" 8 | 9 | defaultConfig { 10 | applicationId "com.redapparat.demo" 11 | minSdkVersion 16 12 | targetSdkVersion 29 13 | versionCode 1 14 | versionName "1.0" 15 | 16 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 17 | } 18 | 19 | testOptions { 20 | unitTests { 21 | includeAndroidResources = true 22 | } 23 | } 24 | 25 | } 26 | 27 | dependencies { 28 | implementation fileTree(dir: 'libs', include: ['*.jar']) 29 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 30 | implementation 'androidx.appcompat:appcompat:1.1.0' 31 | implementation 'androidx.core:core-ktx:1.2.0' 32 | 33 | testImplementation 'junit:junit:4.12' 34 | testImplementation 'androidx.test:core:1.2.0' 35 | testImplementation 'androidx.test.ext:junit:1.1.1' 36 | testImplementation 'androidx.test:runner:1.2.0' 37 | testImplementation 'androidx.test:rules:1.2.0' 38 | testImplementation 'org.robolectric:robolectric:4.3.1' 39 | testImplementation project(':layoutverifier') 40 | } 41 | -------------------------------------------------------------------------------- /app/layoutSnapshots/e1_flat_layout.json: -------------------------------------------------------------------------------- 1 | { 2 | "schemaVersion": 3, 3 | "features": { 4 | "left": 0.0, 5 | "top": 0.0, 6 | "right": 600.0, 7 | "bottom": 800.0, 8 | "type": "android.widget.LinearLayout", 9 | "enabled": true, 10 | "clickable": false, 11 | "id": "No id", 12 | "visibility": "VISIBLE", 13 | "background": "null", 14 | "children": [ 15 | { 16 | "left": 0.0, 17 | "top": 0.0, 18 | "right": 600.0, 19 | "bottom": 41.0, 20 | "type": "android.widget.TextView", 21 | "enabled": true, 22 | "clickable": false, 23 | "id": "com.redapparat.demo:id/textView", 24 | "visibility": "VISIBLE", 25 | "background": "null", 26 | "paddingStart": 0.0, 27 | "paddingTop": 0.0, 28 | "paddingEnd": 0.0, 29 | "paddingBottom": 0.0, 30 | "text": "Hello World", 31 | "textColor": "#8a000000", 32 | "textSize": 14.0 33 | }, 34 | { 35 | "left": 0.0, 36 | "top": 41.0, 37 | "right": 600.0, 38 | "bottom": 102.0, 39 | "type": "android.widget.Button", 40 | "enabled": true, 41 | "clickable": true, 42 | "id": "com.redapparat.demo:id/button", 43 | "visibility": "VISIBLE", 44 | "background": "Drawable", 45 | "paddingStart": 12.0, 46 | "paddingTop": 10.0, 47 | "paddingEnd": 12.0, 48 | "paddingBottom": 10.0, 49 | "text": "Button", 50 | "textColor": "#de000000", 51 | "textSize": 14.0 52 | } 53 | ] 54 | } 55 | } -------------------------------------------------------------------------------- /app/layoutSnapshots/e1_flat_layout_240x320.json: -------------------------------------------------------------------------------- 1 | { 2 | "schemaVersion": 3, 3 | "features": { 4 | "left": 0.0, 5 | "top": 0.0, 6 | "right": 240.0, 7 | "bottom": 320.0, 8 | "type": "android.widget.LinearLayout", 9 | "enabled": true, 10 | "clickable": false, 11 | "id": "No id", 12 | "visibility": "VISIBLE", 13 | "background": "null", 14 | "children": [ 15 | { 16 | "left": 0.0, 17 | "top": 0.0, 18 | "right": 240.0, 19 | "bottom": 41.0, 20 | "type": "android.widget.TextView", 21 | "enabled": true, 22 | "clickable": false, 23 | "id": "com.redapparat.demo:id/textView", 24 | "visibility": "VISIBLE", 25 | "background": "null", 26 | "paddingStart": 0.0, 27 | "paddingTop": 0.0, 28 | "paddingEnd": 0.0, 29 | "paddingBottom": 0.0, 30 | "text": "Hello World", 31 | "textColor": "#8a000000", 32 | "textSize": 14.0 33 | }, 34 | { 35 | "left": 0.0, 36 | "top": 41.0, 37 | "right": 240.0, 38 | "bottom": 102.0, 39 | "type": "android.widget.Button", 40 | "enabled": true, 41 | "clickable": true, 42 | "id": "com.redapparat.demo:id/button", 43 | "visibility": "VISIBLE", 44 | "background": "Drawable", 45 | "paddingStart": 12.0, 46 | "paddingTop": 10.0, 47 | "paddingEnd": 12.0, 48 | "paddingBottom": 10.0, 49 | "text": "Button", 50 | "textColor": "#de000000", 51 | "textSize": 14.0 52 | } 53 | ] 54 | } 55 | } -------------------------------------------------------------------------------- /app/layoutSnapshots/e2_nested_layout.json: -------------------------------------------------------------------------------- 1 | { 2 | "schemaVersion": 3, 3 | "features": { 4 | "left": 0.0, 5 | "top": 0.0, 6 | "right": 600.0, 7 | "bottom": 800.0, 8 | "type": "android.widget.RelativeLayout", 9 | "enabled": true, 10 | "clickable": false, 11 | "id": "No id", 12 | "visibility": "VISIBLE", 13 | "background": "null", 14 | "children": [ 15 | { 16 | "left": 0.0, 17 | "top": 0.0, 18 | "right": 600.0, 19 | "bottom": 41.0, 20 | "type": "android.widget.LinearLayout", 21 | "enabled": true, 22 | "clickable": false, 23 | "id": "No id", 24 | "visibility": "VISIBLE", 25 | "background": "null", 26 | "children": [ 27 | { 28 | "left": 298.0, 29 | "top": 0.0, 30 | "right": 301.0, 31 | "bottom": 41.0, 32 | "type": "android.widget.TextView", 33 | "enabled": true, 34 | "clickable": false, 35 | "id": "com.redapparat.demo:id/text_top", 36 | "visibility": "VISIBLE", 37 | "background": "null", 38 | "paddingStart": 0.0, 39 | "paddingTop": 0.0, 40 | "paddingEnd": 0.0, 41 | "paddingBottom": 0.0, 42 | "text": "Top", 43 | "textColor": "#8a000000", 44 | "textSize": 14.0 45 | } 46 | ] 47 | }, 48 | { 49 | "left": 0.0, 50 | "top": 759.0, 51 | "right": 600.0, 52 | "bottom": 800.0, 53 | "type": "android.widget.LinearLayout", 54 | "enabled": true, 55 | "clickable": false, 56 | "id": "No id", 57 | "visibility": "VISIBLE", 58 | "background": "null", 59 | "children": [ 60 | { 61 | "left": 297.0, 62 | "top": 0.0, 63 | "right": 303.0, 64 | "bottom": 41.0, 65 | "type": "android.widget.TextView", 66 | "enabled": true, 67 | "clickable": false, 68 | "id": "com.redapparat.demo:id/text_bottom", 69 | "visibility": "VISIBLE", 70 | "background": "null", 71 | "paddingStart": 0.0, 72 | "paddingTop": 0.0, 73 | "paddingEnd": 0.0, 74 | "paddingBottom": 0.0, 75 | "text": "Bottom", 76 | "textColor": "#8a000000", 77 | "textSize": 14.0 78 | } 79 | ] 80 | } 81 | ] 82 | } 83 | } -------------------------------------------------------------------------------- /app/layoutSnapshots/e2_nested_layout_only_specified views.json: -------------------------------------------------------------------------------- 1 | { 2 | "schemaVersion": 3, 3 | "features": { 4 | "children": [ 5 | { 6 | "children": [ 7 | { 8 | "left": 298.0, 9 | "top": 0.0, 10 | "right": 301.0, 11 | "bottom": 41.0, 12 | "type": "android.widget.TextView", 13 | "enabled": true, 14 | "clickable": false, 15 | "id": "com.redapparat.demo:id/text_top", 16 | "visibility": "VISIBLE", 17 | "background": "null", 18 | "paddingStart": 0.0, 19 | "paddingTop": 0.0, 20 | "paddingEnd": 0.0, 21 | "paddingBottom": 0.0, 22 | "text": "Top", 23 | "textColor": "#8a000000", 24 | "textSize": 14.0 25 | } 26 | ] 27 | }, 28 | { 29 | "children": [ 30 | { 31 | "left": 297.0, 32 | "top": 0.0, 33 | "right": 303.0, 34 | "bottom": 41.0, 35 | "type": "android.widget.TextView", 36 | "enabled": true, 37 | "clickable": false, 38 | "id": "com.redapparat.demo:id/text_bottom", 39 | "visibility": "VISIBLE", 40 | "background": "null", 41 | "paddingStart": 0.0, 42 | "paddingTop": 0.0, 43 | "paddingEnd": 0.0, 44 | "paddingBottom": 0.0, 45 | "text": "Bottom", 46 | "textColor": "#8a000000", 47 | "textSize": 14.0 48 | } 49 | ] 50 | } 51 | ] 52 | } 53 | } -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 15 | 18 | 21 | 22 | 23 | 24 | 30 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | -------------------------------------------------------------------------------- /app/src/main/res/layout/e1_flat_layout.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 11 | 12 |