androidAndroidTest.androidx.compose.ui.text.font.FontFamilyResolverFileTest.kt Maven / Gradle / Ivy

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/*
 * Copyright 2021 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.font

import android.content.Context
import android.graphics.Typeface
import android.os.ParcelFileDescriptor
import androidx.compose.ui.text.ExperimentalTextApi
import androidx.compose.ui.text.UncachedFontFamilyResolver
import androidx.compose.ui.text.matchers.assertThat
import androidx.compose.ui.text.platform.bitmap
import androidx.test.ext.junit.runners.AndroidJUnit4
import androidx.test.filters.MediumTest
import androidx.test.filters.SdkSuppress
import androidx.test.platform.app.InstrumentationRegistry
import org.junit.After
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith
import java.io.File

@RunWith(AndroidJUnit4::class)
@MediumTest
@OptIn(ExperimentalTextApi::class)
class FontFamilyResolverFileTest {
    private val context = InstrumentationRegistry.getInstrumentation().context
    private val assetFontPath = "subdirectory/asset_font.ttf"
    private val tmpFontPath = "tmp_file_font.ttf"
    private val fontFamilyResolver = UncachedFontFamilyResolver(context)

    @Before
    fun setup() {
        deleteFile()
        writeFile()
    }

    @After
    fun cleanupAfter() {
        deleteFile()
    }

    private fun resolveAsTypeface(
        fontFamily: FontFamily? = null,
        fontWeight: FontWeight = FontWeight.Normal,
        fontStyle: FontStyle = FontStyle.Normal,
        fontSynthesis: FontSynthesis = FontSynthesis.All
    ): Typeface {
        return fontFamilyResolver.resolve(
            fontFamily,
            fontWeight,
            fontStyle,
            fontSynthesis
        ).value as Typeface
    }

    private fun deleteFile() {
        val fontFile = File(context.filesDir, tmpFontPath)
        if (fontFile.exists()) {
            fontFile.delete()
        }
    }

    private fun writeFile() {
        context.assets.open(assetFontPath).use { input ->
            val bytes = input.readBytes()
            context.openFileOutput(tmpFontPath, Context.MODE_PRIVATE).use { output ->
                output.write(bytes)
            }
        }
    }

    @Test
    @MediumTest
    fun customSingleFont_fromAssetManager() {
        val defaultTypeface = resolveAsTypeface()

        val fontFamily = Font(assetFontPath, context.assets).toFontFamily()

        val typeface = resolveAsTypeface(fontFamily = fontFamily)

        assertThat(typeface).isNotNull()
        // asset font have ~ defined as the only character supported.
        assertThat(typeface.bitmap("~")).isNotEqualToBitmap(defaultTypeface.bitmap("~"))
    }

    @Test
    @MediumTest
    fun customSingleFont_fromFile() {
        val defaultTypeface = resolveAsTypeface()

        val fontFile = File(context.filesDir, tmpFontPath)
        val fontFamily = Font(fontFile).toFontFamily()

        val typeface = resolveAsTypeface(fontFamily = fontFamily)

        assertThat(typeface).isNotNull()
        // asset font have ~ defined as the only character supported.
        assertThat(typeface.bitmap("~")).isNotEqualToBitmap(defaultTypeface.bitmap("~"))
    }

    @Test
    @MediumTest
    @SdkSuppress(minSdkVersion = 26)
    fun customSingleFont_fromFileDescriptor() {
        val defaultTypeface = resolveAsTypeface()

        context.openFileInput(tmpFontPath).use { inputStream ->
            val fontFamily = Font(ParcelFileDescriptor.dup(inputStream.fd)).toFontFamily()
            val typeface = resolveAsTypeface(fontFamily = fontFamily)

            assertThat(typeface).isNotNull()
            // asset font have ~ defined as the only character supported.
            assertThat(typeface.bitmap("~")).isNotEqualToBitmap(defaultTypeface.bitmap("~"))
        }
    }
}