androidAndroidTest.androidx.compose.ui.text.AndroidParagraphTextDirectionTest.kt Maven / Gradle / Ivy

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/*
 * Copyright 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.compose.ui.text

import androidx.compose.ui.text.android.InternalPlatformTextApi
import androidx.compose.ui.text.android.LayoutCompat
import androidx.compose.ui.text.intl.LocaleList
import androidx.compose.ui.text.platform.resolveTextDirectionHeuristics
import androidx.compose.ui.text.style.TextDirection
import androidx.test.filters.SmallTest
import com.google.common.truth.Truth.assertThat
import org.junit.After
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith
import androidx.test.ext.junit.runners.AndroidJUnit4
import java.util.Locale

@RunWith(AndroidJUnit4::class)
@SmallTest
@OptIn(InternalPlatformTextApi::class)
class AndroidParagraphTextDirectionTest {

    private lateinit var defaultLocale: Locale
    private val ltrLocaleList = LocaleList("en")
    private val rtlLocaleList = LocaleList("ar")
    private val ltrLocale = Locale.ENGLISH
    private val rtlLocale = Locale("ar")

    @Before
    fun before() {
        defaultLocale = Locale.getDefault()
    }

    @After
    fun after() {
        Locale.setDefault(defaultLocale)
    }

    @Test
    fun resolveTextDirectionHeuristics_nullTextDirection_nullLocaleList_defaultLtrLocale() {
        Locale.setDefault(ltrLocale)

        assertThat(
            resolveTextDirectionHeuristics(textDirection = null, localeList = null)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_LTR)
    }

    @Test
    fun resolveTextDirectionHeuristics_nullTextDirection_nullLocaleList_defaultRtlLocale() {
        Locale.setDefault(rtlLocale)

        assertThat(
            resolveTextDirectionHeuristics(textDirection = null, localeList = null)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_RTL)
    }

    @Test
    fun resolveTextDirectionHeuristics_nullTextDirection_ltrLocaleList() {
        assertThat(
            resolveTextDirectionHeuristics(textDirection = null, localeList = ltrLocaleList)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_LTR)
    }

    @Test
    fun resolveTextDirectionHeuristics_nullTextDirection_RtlLocaleList() {
        assertThat(
            resolveTextDirectionHeuristics(textDirection = null, localeList = rtlLocaleList)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_RTL)
    }

    @Test
    fun resolveTextDirectionHeuristics_contentTextDirection_nullLocaleList_defaultLtrLocale() {
        Locale.setDefault(ltrLocale)

        assertThat(
            resolveTextDirectionHeuristics(textDirection = TextDirection.Content, localeList = null)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_LTR)
    }

    @Test
    fun resolveTextDirectionHeuristics_contentTextDirection_nullLocaleList_defaultRtlLocale() {
        Locale.setDefault(rtlLocale)

        assertThat(
            resolveTextDirectionHeuristics(textDirection = TextDirection.Content, localeList = null)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_RTL)
    }

    @Test
    fun resolveTextDirectionHeuristics_contentTextDirection_LtrLocaleList() {
        assertThat(
            resolveTextDirectionHeuristics(
                textDirection = TextDirection.Content,
                localeList = ltrLocaleList
            )
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_LTR)
    }

    @Test
    fun resolveTextDirectionHeuristics_contentTextDirection_RtlLocaleList() {
        assertThat(
            resolveTextDirectionHeuristics(
                textDirection = TextDirection.Content,
                localeList = rtlLocaleList
            )
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_RTL)
    }

    @Test
    fun resolveTextDirectionHeuristics_ltrTextDirection_nullLocaleList() {
        assertThat(
            resolveTextDirectionHeuristics(textDirection = TextDirection.Ltr, localeList = null)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_LTR)
    }

    @Test
    fun resolveTextDirectionHeuristics_rtlTextDirection_nullLocaleList() {
        assertThat(
            resolveTextDirectionHeuristics(textDirection = TextDirection.Rtl, localeList = null)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_RTL)
    }

    @Test
    fun resolveTextDirectionHeuristics_ContentOrLtr() {
        assertThat(
            resolveTextDirectionHeuristics(textDirection = TextDirection.ContentOrLtr)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_LTR)
    }

    @Test
    fun resolveTextDirectionHeuristics_ContentOrRtl() {
        assertThat(
            resolveTextDirectionHeuristics(textDirection = TextDirection.ContentOrRtl)
        ).isEqualTo(LayoutCompat.TEXT_DIRECTION_FIRST_STRONG_RTL)
    }
}