| /* |
| * Copyright 2022 Google LLC |
| * |
| * 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 com.google.android.libraries.mobiledatadownload.file.samples; |
| |
| import static com.google.android.libraries.mobiledatadownload.file.common.testing.StreamUtils.createFile; |
| import static com.google.android.libraries.mobiledatadownload.file.common.testing.StreamUtils.readFile; |
| import static com.google.common.truth.Truth.assertThat; |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| |
| import android.net.Uri; |
| import android.text.TextUtils; |
| import com.google.android.libraries.mobiledatadownload.file.SynchronousFileStorage; |
| import com.google.android.libraries.mobiledatadownload.file.backends.FileUriAdapter; |
| import com.google.android.libraries.mobiledatadownload.file.backends.JavaFileBackend; |
| import com.google.android.libraries.mobiledatadownload.file.common.Sizable; |
| import com.google.android.libraries.mobiledatadownload.file.common.testing.TemporaryUri; |
| import com.google.android.libraries.mobiledatadownload.file.openers.ReadStreamOpener; |
| import com.google.android.libraries.mobiledatadownload.file.transforms.CompressTransform; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Lists; |
| import com.google.common.io.BaseEncoding; |
| import com.google.thirdparty.robolectric.GoogleRobolectricTestRunner; |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.List; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @RunWith(GoogleRobolectricTestRunner.class) |
| public final class SamplesTest { |
| SynchronousFileStorage storage; |
| ByteCountingMonitor byteCounter; |
| |
| @Rule public TemporaryUri tmpUri = new TemporaryUri(); |
| |
| @Before |
| public void setupFileStorage() { |
| byteCounter = new ByteCountingMonitor(); |
| storage = |
| new SynchronousFileStorage( |
| ImmutableList.of(new JavaFileBackend(), new Base64Backend()), |
| ImmutableList.of( |
| new Base64Transform(), new CapitalizationTransform(), new CompressTransform()), |
| ImmutableList.of(byteCounter)); |
| } |
| |
| @Test |
| public void capitalizeAndBase64ShouldRoundTrip() throws Exception { |
| Uri uri = tmpUri.newUri().buildUpon().encodedFragment("transform=capitalize+base64").build(); |
| createFile(storage, uri, "SOME ALL CAPS TEXT"); |
| assertThat(readFile(storage, uri)).isEqualTo("SOME ALL CAPS TEXT"); |
| |
| // Check raw file and manually decoded result. |
| List<String> path = Lists.newArrayList(uri.getPathSegments()); |
| String filename = path.get(path.size() - 1); |
| filename = filename.toLowerCase(); // capitalize |
| filename = BaseEncoding.base64().encode(filename.getBytes(UTF_8)); // base64 |
| path.set(path.size() - 1, filename); |
| Uri encodedUri = uri.buildUpon().path(TextUtils.join("/", path)).build(); |
| File encodedFile = FileUriAdapter.instance().toFile(encodedUri); |
| BufferedReader rawReader = |
| new BufferedReader(new InputStreamReader(new FileInputStream(encodedFile), UTF_8)); |
| String encodedText = rawReader.readLine(); |
| assertThat(encodedText).isEqualTo("c29tZSBhbGwgY2FwcyB0ZXh0"); |
| String lowercaseText = new String(BaseEncoding.base64().decode(encodedText), UTF_8); |
| assertThat(lowercaseText).isEqualTo("some all caps text"); |
| rawReader.close(); |
| |
| assertThat(byteCounter.stats()) |
| .isEqualTo(new long[] {encodedText.length(), encodedText.length()}); |
| } |
| |
| @Test |
| public void capitalizeAndBase64AndCompressShouldRoundTrip() throws Exception { |
| Uri uri = |
| tmpUri.newUri().buildUpon().encodedFragment("transform=capitalize+base64+compress").build(); |
| createFile(storage, uri, "SOME ALL CAPS TEXT"); |
| assertThat(readFile(storage, uri)).isEqualTo("SOME ALL CAPS TEXT"); |
| assertThat(byteCounter.stats()).isEqualTo(new long[] {32, 32}); |
| } |
| |
| @Test |
| public void base64BackendShouldRoundTrip() throws Exception { |
| Uri uri = tmpUri.newUri().buildUpon().scheme("base64").build(); |
| createFile(storage, uri, "SOME ALL CAPS TEXT"); |
| assertThat(readFile(storage, uri)).isEqualTo("SOME ALL CAPS TEXT"); |
| assertThat(byteCounter.stats()) |
| .isEqualTo(new long[] {"SOME ALL CAPS TEXT".length(), "SOME ALL CAPS TEXT".length()}); |
| } |
| |
| @Test |
| public void capitalizationTransform_shouldBeSizable() throws Exception { |
| Uri uri = tmpUri.newUri().buildUpon().encodedFragment("transform=capitalize").build(); |
| String text = "SOME ALL CAPS TEXT"; |
| createFile(storage, uri, text); |
| try (InputStream in = storage.open(uri, ReadStreamOpener.create())) { |
| assertThat(in instanceof Sizable).isTrue(); |
| assertThat(((Sizable) in).size()).isEqualTo(text.length()); |
| } |
| } |
| } |