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fenix/app/src/test/java/org/mozilla/fenix/components/StoreProviderTest.kt

70 lines
2.0 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.components
import androidx.fragment.app.Fragment
import mozilla.components.lib.state.Action
import mozilla.components.lib.state.State
import mozilla.components.lib.state.Store
import mozilla.components.support.test.robolectric.createAddedTestFragment
import org.junit.Assert.assertEquals
import org.junit.Assert.assertFalse
import org.junit.Assert.assertTrue
import org.junit.Test
import org.junit.runner.RunWith
import org.mozilla.fenix.TestApplication
import org.robolectric.RobolectricTestRunner
import org.robolectric.annotation.Config
@RunWith(RobolectricTestRunner::class)
@Config(application = TestApplication::class)
class StoreProviderTest {
private class BasicState : State
private val basicStore = Store(BasicState()) { state, _: Action -> state }
@Test
fun `factory returns store provider`() {
var createCalled = false
val factory = StoreProviderFactory {
createCalled = true
basicStore
}
assertFalse(createCalled)
assertEquals(basicStore, factory.create(StoreProvider::class.java).store)
assertTrue(createCalled)
}
@Test
fun `get returns store`() {
val fragment = createAddedTestFragment { Fragment() }
val store = StoreProvider.get(fragment) { basicStore }
assertEquals(basicStore, store)
}
@Test
fun `get only calls createStore if needed`() {
val fragment = createAddedTestFragment { Fragment() }
var createCalled = false
val createStore = {
createCalled = true
basicStore
}
StoreProvider.get(fragment, createStore)
assertTrue(createCalled)
createCalled = false
StoreProvider.get(fragment, createStore)
assertFalse(createCalled)
}
}