🎨 Compose Mock Preview

A Kotlin library to automatically generate mock data in Jetpack Compose @Previews using KSP.

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🚀 Feature

• Automatic generation PreviewParameterProvider
• Nested data class support
• Custom annotations: @LongMessagePreview, @ShortMessagePreview, etc.
• Centralized configuration via ComposePreviewMockConfig
• Compatible with KSP + KotlinPoet

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📦 Installation ( In progress )

add KSP plugin in your build.gradle.kts :

plugins {
    id("com.google.devtools.ksp") version "1.9.22-1.0.16" // update with your kotlin version
}

and add to dependencies :

dependencies {
    ksp("com.recisio.compose-mock-preview:1.0.0")
    implementation("com.recisio.compose-mock-preview:1.0.0")
}

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🛠️ Using

1. Data class Annotation:

@ComposeMockPreviewProvider
data class TestComposable(
    val title: String,
    @LongMessagePreview val description: String,
    val imageRes: Int,
    val nested: NestedData
)

2. Add a configuration :

@ComposeMockPreviewConfiguration
class AppMockConfiguration : ComposeMockPreviewConfig {
    override val longMessageList: List<String> = listOf("Very very long message")
    override val shortMessageList: List<String> = listOf("short message")
    override val resMessageList: List<Int> = listOf(R.string.app_name)
    override val resDrawableList: List<Int> = listOf(R.drawable.ic_launcher_background)
    override val resColorList: List<Int> = listOf(R.color.purple_700)
}

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👀 Preview example

@PreviewLightDark
@Composable
fun TestComposablePreview(@PreviewParameter(TestComposablePreviewProvider::class) parameter: TestComposable) {
    TestCompose(parameter)
}

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🧩 Module

Module	Description
com.recisio.compose-mock-preview	Annotations KSP (@ComposeMockPreviewProvider) + KSP PreviewParameterProvider auto generate file

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📝 Licence

MIT © Recisio