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68 lines
2.0 KiB
Kotlin
68 lines
2.0 KiB
Kotlin
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix.components.settings
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import android.content.SharedPreferences
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import io.mockk.Called
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import io.mockk.MockKAnnotations
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import io.mockk.Runs
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import io.mockk.every
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import io.mockk.impl.annotations.MockK
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import io.mockk.just
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import io.mockk.verify
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import mozilla.components.support.ktx.android.content.PreferencesHolder
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import org.junit.Assert.assertFalse
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import org.junit.Assert.assertTrue
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import org.junit.Before
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import org.junit.Test
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class FeatureFlagPreferenceTest {
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@MockK private lateinit var prefs: SharedPreferences
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@MockK private lateinit var editor: SharedPreferences.Editor
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@Before
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fun setup() {
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MockKAnnotations.init(this)
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every { prefs.getBoolean("key", false) } returns true
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every { prefs.edit() } returns editor
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every { editor.putBoolean("key", any()) } returns editor
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every { editor.apply() } just Runs
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}
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@Test
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fun `acts like boolean preference if feature flag is true`() {
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val holder = FeatureFlagHolder(featureFlag = true)
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assertTrue(holder.property)
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verify { prefs.getBoolean("key", false) }
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holder.property = false
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verify { editor.putBoolean("key", false) }
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}
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@Test
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fun `no-op if feature flag is false`() {
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val holder = FeatureFlagHolder(featureFlag = false)
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assertFalse(holder.property)
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holder.property = true
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holder.property = false
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verify { prefs wasNot Called }
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verify { editor wasNot Called }
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}
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private inner class FeatureFlagHolder(featureFlag: Boolean) : PreferencesHolder {
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override val preferences = prefs
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var property by featureFlagPreference(
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"key",
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default = false,
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featureFlag = featureFlag
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)
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}
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}
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