Shot
paparazzi
Shot | paparazzi | |
---|---|---|
5 | 12 | |
1,160 | 2,168 | |
0.3% | 0.9% | |
5.8 | 9.5 | |
3 months ago | 5 days ago | |
Kotlin | Kotlin | |
Apache License 2.0 | Apache License 2.0 |
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Shot
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Improving snapshot tests with Paparazzi
I previously wrote about snapshot testing Compose with Shot here: https://medium.com/proandroiddev/oh-snap-966bd786b7a4
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Do you do test-based capture & publish for QA? (Espresso, JUnit,..)
Thanks. Yes, there is some similarities to Screenshot testing. Besides Paparazzi there are these other options if anyone is looking for that: http://shopify.github.io/android-testify/ https://github.com/dropbox/dropshots https://github.com/pedrovgs/Shot
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Screenshot Testing service
I've been working for a while on integrating screenshot testing into our workflows. I've been using https://github.com/pedrovgs/Shot to capture screenshots and that's working great. But the missing piece currently is the approval and management of these screenshots.
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Shot VS RoadToEffectiveSnapshotTesting - a user suggested alternative
2 projects | 5 Dec 2021
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Best way to automate screen capture
- https://github.com/Karumi/Shot
paparazzi
- paparazzi 1.3.0 released
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Building Reddit’s design system for Android with Jetpack Compose
Component API tests are written for all components in the library. These are Paparazzi snapshot tests that are parameterized to cover all the combinations of values for the properties in the API of a given component. Additionally, they include as parameters: color theme, layout direction, and optionally other properties that may be relevant to the component under test (e.g., font scale).
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Compose & Paparazzi: Automatically find @Preview composables at runtime
Looks really nice. Sadly, I wasn't able to test it because it doesn't support application module
- Paparazzi 1.2 is out
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How do you guys test the UI of your app?
Curious what you mean by hilt refuses to work and what you have tried? Usually though if I'm testing the UI of the app, I might use paparazzi for screenshot tests because it doesn't have to run the test on device. Then for a UI integration test for navigation and user flows, use espresso and replace the network data sources with mocks which in your case would be with hilt android test rule and test install in annotation .
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Improving snapshot tests with Paparazzi
/** * Finds all files in the components module which have Compose previews * and generates Paparazzi screenshot tests for them. * * The generated tests can then be used to record screenshots with * ./gradlew components:recordPaparazziInternalDebug * * To verify that the current implementation matches the recorded screenshots * ./gradlew components:verifyPaparazziInternalDebug */ fun main() { val path = System.getProperty("user.dir") ?: error("Can't get user dir") // Paparazzi does not currently work in the app module: https://github.com/cashapp/paparazzi/issues/107 // For now this is hardcoded to only check files in the components module. // If we pull our compose files out of the app module to a separate module this code has to be updated. File(path).walk().filter { it.path.contains("/components/src/main/java") && it.extension == "kt" }.forEach { if (it.readText().contains("@Preview")) { processFileWithPreviews(it) } } } /** * Reads the given file, finds the names of all the functions annotated with @Preview * and uses them to generate a Paparazzi test file with one test for each preview. */ private fun processFileWithPreviews(file: File) { val lines = file.readLines() val previewNames = mutableListOf() var saveNextFunctionName = false var packageName = "" lines.forEachIndexed { i, line -> if (i == 0) { packageName = line.split(" ").last() } if (line.contains("@Preview")) { saveNextFunctionName = true } if (saveNextFunctionName && line.startsWith("fun ")) { previewNames += line.split(" ")[1].removeSuffix("()") saveNextFunctionName = false } } val pathString = file.path.replace("src/main", "src/test").split("java").first() + "java" val testFilePath = pathString.toPath() generatePaparazziTest(packageName, file.nameWithoutExtension + "PaparazziTest", testFilePath, previewNames) } fun generatePaparazziTest(packageName: String, fileName: String, path: Path, previewNames: List) { val classBuilder = TypeSpec.classBuilder(fileName) .superclass(PaparazziTest::class) .addAnnotation( AnnotationSpec.builder(Suppress::class) // KotlinPoet does not let us remove redundant public modifiers or Unit return types for the functions, // but we don't mind for generated code as long as the tests work .addMember("\"RedundantVisibilityModifier\", \"RedundantUnitReturnType\"") .build() ) previewNames.forEach { classBuilder.addFunction( FunSpec.builder(it.removeSuffix("Preview").usLocaleDecapitalize()) .addStatement("paparazziRule.snapshot { $it() }") .addAnnotation(Test::class) .build() ) } val testFile = FileSpec.builder(packageName, fileName) .addType(classBuilder.build()) .addFileComment("AUTO-GENERATED FILE by generate_paparazzi_tests.kt\nDO NOT MODIFY") .build() val nioPath = path.toNioPath() testFile.writeTo(nioPath) }
- Do you do test-based capture & publish for QA? (Espresso, JUnit,..)
- Paparazzi 1.0 is out
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Mockito and non-debuggable testBuildTypes
The good thing is, Square got us covered once more, in regards to the flaky emulators, by providing a screenshot-testing library that does not require an emulator: https://cashapp.github.io/paparazzi/
- Most Efficient Way of Testing Layouts on Various Aspect Ratios/Pixel Densities/Viewport/Resolutions
What are some alternatives?
Android-Root-Coverage-Plugin - A Gradle Plugin for Android developers that automatically configures Jacoco code coverage tasks for both combined and per module coverage reports, easier than ever.
ardupilot - ArduPlane, ArduCopter, ArduRover, ArduSub source
kotlinpoet - A Kotlin API for generating .kt source files.
PX4-Autopilot - PX4 Autopilot Software
js2p-gradle - Extended Jsonschema2Pojo gradle plugin
Mockito - Most popular Mocking framework for unit tests written in Java
screenshotbot-oss - A Screenshot Testing service to tie with your existing Android, iOS and Web screenshot tests
dropshots - Easy on-device screenshot testing for Android.
dependency-analysis-gradle-plugin - Gradle plugin for JVM projects written in Java, Kotlin, Groovy, or Scala; and Android projects written in Java or Kotlin. Provides advice for managing dependencies and other applied plugins
ESP32 - DroneBridge for ESP32. A transparent short range wifi based telemetry (serial to WiFi) link. Support for MAVLink, MSP, LTM (iNAV) or any other protocol
Android-screenshot-testing-playground - A sample repo to introduce screenshot testing in Android with different libraries