@RequiresApi(value = 34)
class AppFunctionTestRule : TestRule

A JUnit TestRule for setting up an environment to exercise AppFunction APIs in unit or Robolectric tests.

Prefer real system-level testing where possible. This rule is intended only for local tests that simulate cross-app interactions via AppFunctions.

Any functions annotated with androidx.appfunctions.service.AppFunction in test code will be automatically registered in this environment during initialization, provided the appfunctions-compiler is applied to the test configuration with the appfunctions:aggregateAppFunctions compiler option set to true.

Example Gradle Setup

dependencies {
    ...
    kspTest("androidx.appfunctions:appfunctions-compiler:xx.xx.xx")
}

ksp {
    arg("appfunctions:aggregateAppFunctions", "true")
}

Example: Testing App Functions in the Same App

package com.example.appfunctions

// Sample functions under test.
class ExampleFunctions {
    @AppFunction
    suspend fun add(a: Int, b: Int): Int = a + b
}

// Test file.
class ExampleFunctionsTest {
    @get:Rule val appFunctionTestRule = AppFunctionTestRule(context)
    private val appFunctionManagerCompat = appFunctionTestRule.getAppFunctionManagerCompat()

    @Test
    fun addFunction_returnsCorrectSum() = runBlocking {
        val appFunctionPackageMetadata = appFunctionManagerCompat.observeAppFunctions(
                AppFunctionSearchSpec(
                    packageNames = listOf(packageName),
                    schemaName = schemaName
                )
            )
            .first()
            .single()
        val addFunctionMetadata = appFunctionPackageMetadata.appFunctions.single()

        val response = appFunctionManagerCompat.executeAppFunction(
            ExecuteAppFunctionRequest(...)
        )

        // assert on returned response.
    }
}

Example: Testing App Function Execution in an Agent

package com.example.agent.appfunctions

class AppFunctionsAgent(
    private val appFunctionManagerCompat: AppFunctionManagerCompat
) {
    suspend fun executeAppFunction(
        packageName: String,
        schemaName: String,
        params: Any
    ): AppFunctionData {
        val appFunctionPackageMetadata = appFunctionManagerCompat
            .observeAppFunctions(
                AppFunctionSearchSpec(
                    packageNames = listOf(packageName),
                    schemaName = schemaName
                )
            )
            .first()
            .single()

        val appFunctionMetadata = appFunctionPackageMetadata.appFunctions.single()

        val request = ExecuteAppFunctionRequest(...)

        val response = appFunctionManagerCompat.executeAppFunction(request)


       // return response.
    }
}

// Test file.
class TestFunctions {
    @AppFunction
    fun testFun(parameters: TestParam): TestReturn { ... }
}

class AppFunctionsAgentTest {
    @get:Rule val appFunctionTestRule = AppFunctionTestRule(context)
    private val appFunctionsAgent = AppFunctionsAgent(
        appFunctionTestRule.getAppFunctionManagerCompat()
    )

    @Test
    fun testFun_returnsExpectedResult() = runBlocking {
        val response = appFunctionsAgent.executeAppFunction(
            context.packageName,
            TestFunctionsIds.TEST_FUN_ID,
            TestParam()
        )

        // assert on response.
    }
}

Summary

Public constructors

Public functions
open Statement
apply(base: Statement?, description: Description?)
AppFunctionManagerCompat

Returns an AppFunctionManagerCompat instance for interacting with AppFunctions registered via the test rule.

Public constructors

AppFunctionTestRule

Added in 1.0.0-alpha03
AppFunctionTestRule(context: Context)

Public functions

apply

Added in 1.0.0-alpha03
open fun apply(base: Statement?, description: Description?): Statement

getAppFunctionManagerCompat

Added in 1.0.0-alpha03
fun getAppFunctionManagerCompat(): AppFunctionManagerCompat

Returns an AppFunctionManagerCompat instance for interacting with AppFunctions registered via the test rule.