cometchat-android-v6-testing

Ground truth: the installed kit's API shape (CometChatUIKit static object; CometChat static singleton) + contracts.android-v6.json. The UI Kit ships no test doubles or test APIs — nothing below invents one; the testable seam is code YOU write around the SDK. Verify symbols against catalog android-v6.json.

Companion skills (read first)

• cometchat-android-v6-core — install, credentials, initFromSettings → login → render, lifecycle, sizing. Assumed here, never repeated.
• cometchat-android-v6-production — the release checks these tests protect.

Use this skill when

"how do we test this?", "mock CometChat in unit tests", "write a UI test for the chat screen", "add CometChat checks to CI", "how do I test login without hitting the network?".

Prerequisites & install

Standard Android testing stack only — JUnit4, a mocking library (MockK for Kotlin), androidx.test/Espresso for Views, androidx.compose.ui:ui-test-junit4 for Compose. No CometChat test artifact exists; don't look for one.

Test setup — create the seam first

CometChatUIKit and CometChat are static singletons, so they can't be injected or faked directly in a JVM unit test. Wrap the calls your app makes behind a small interface and depend on THAT:

interface ChatSession {
    fun isLoggedIn(): Boolean
    fun login(uid: String, onResult: (Result<User>) -> Unit)
    fun logout(onResult: (Result<Unit>) -> Unit)
}

class RealChatSession : ChatSession {           // the only class that touches the SDK
    override fun isLoggedIn() = CometChatUIKit.getLoggedInUser() != null
    override fun login(uid: String, onResult: (Result<User>) -> Unit) =
        CometChatUIKit.login(uid, object : CometChat.CallbackListener<User>() {
            override fun onSuccess(user: User) = onResult(Result.success(user))
            override fun onError(e: CometChatException) = onResult(Result.failure(e))
        })
    override fun logout(onResult: (Result<Unit>) -> Unit) { /* … */ }
}

Your ViewModels/screens take ChatSession; unit tests pass a fake. This one wrapper is what makes the rest of this skill possible — without it, "mocking CometChat" means static mocking (mockkStatic), which is brittle and should be a last resort.