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fenix/app/src/test/java/org/mozilla/fenix/perf/HotStartPerformanceMonitorT...

44 lines
1.3 KiB
Kotlin

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.fenix.perf
import io.mockk.Called
import io.mockk.MockKAnnotations
import io.mockk.impl.annotations.MockK
import io.mockk.verify
import org.junit.Before
import org.junit.Test
class HotStartPerformanceMonitorTest {
private lateinit var monitor: HotStartPerformanceMonitor
@MockK(relaxed = true) private lateinit var log: (String) -> Unit
private var elapsedRealtime = 0L
@Before
fun setUp() {
MockKAnnotations.init(this)
monitor = HotStartPerformanceMonitor(log, getElapsedRealtime = { elapsedRealtime })
}
@Test
fun `WHEN onRestart is not called but onPostResume is called THEN we do not log`() {
monitor.onPostResumeFinalMethodCall()
verify { log.invoke(any()) wasNot Called }
}
@Test
fun `WHEN onRestart then onPostResume is called THEN we log the elapsed time`() {
elapsedRealtime = 10
monitor.onRestartFirstMethodCall()
elapsedRealtime = 100
monitor.onPostResumeFinalMethodCall()
verify { log.invoke("hot start: 90") } // fragile but it's not worth the time to make robust.
}
}