robolectric/src/test/java/org/robolectric/shadows/ShadowAssetManagerTest.java

package org.robolectric.shadows;

import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.TruthJUnit.assume;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static org.robolectric.shadows.ShadowAssetManager.legacyShadowOf;
import static org.robolectric.shadows.ShadowAssetManager.useLegacy;

import android.content.res.AssetManager;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.util.TypedValue;
import androidx.test.core.app.ApplicationProvider;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.robolectric.R;
import org.robolectric.Robolectric;
import org.robolectric.annotation.Config;
import org.robolectric.shadow.api.Shadow;
import org.robolectric.shadows.ShadowResources.ShadowLegacyTheme;

@RunWith(AndroidJUnit4.class)
public class ShadowAssetManagerTest {

  @Rule
  public ExpectedException expectedException = ExpectedException.none();

  private AssetManager assetManager;
  private Resources resources;

  @Before
  public void setUp() throws Exception {
    resources = ApplicationProvider.getApplicationContext().getResources();
    assetManager = resources.getAssets();
  }

  @Test
  public void openFd_shouldProvideFileDescriptorForDeflatedAsset() throws Exception {
    assume().that(useLegacy()).isFalse();
    expectedException.expect(FileNotFoundException.class);
    expectedException.expectMessage(
        "This file can not be opened as a file descriptor; it is probably compressed");

    assetManager.openFd("deflatedAsset.xml");
  }

  @Test
  public void openNonAssetShouldOpenRealAssetFromResources() throws IOException {
    InputStream inputStream = assetManager.openNonAsset(0, "res/drawable/an_image.png", 0);

    // expect different sizes in binary vs file resources
    int bytes = countBytes(inputStream);
    if (bytes != 6559 && bytes != 5138) {
      fail("Expected 5138 or 6559 bytes for image but got " + bytes);
    }
  }

  @Test
  public void openNonAssetShouldOpenFileFromAndroidJar() throws IOException {
    String fileName = "res/raw/fallbackring.ogg";
    if (useLegacy()) {
      // Not the real full path (it's in .m2/repository), but it only cares about the last folder and file name;
      // retrieves the uncompressed, un-version-qualified file from raw-res/...
      fileName = "jar:" + fileName;
    }
    InputStream inputStream = assetManager.openNonAsset(0, fileName, 0);
    assertThat(countBytes(inputStream)).isEqualTo(14611);
  }

  @Test
  public void openNonAssetShouldThrowExceptionWhenFileDoesNotExist() throws IOException {
    assume().that(useLegacy()).isTrue();

    expectedException.expect(IOException.class);
    expectedException.expectMessage(
        "res/drawable/does_not_exist.png");

    assetManager.openNonAsset(0, "res/drawable/does_not_exist.png", 0);
  }

  @Test
  public void unknownResourceIdsShouldReportPackagesSearched() throws IOException {
    assume().that(useLegacy()).isTrue();

    expectedException.expect(Resources.NotFoundException.class);
    expectedException.expectMessage("Resource ID #0xffffffff");

    resources.newTheme().applyStyle(-1, false);
    assetManager.openNonAsset(0, "res/drawable/does_not_exist.png", 0);
  }

  @Test
  public void forSystemResources_unknownResourceIdsShouldReportPackagesSearched()
      throws IOException {
    assume().that(useLegacy()).isTrue();
    expectedException.expect(Resources.NotFoundException.class);
    expectedException.expectMessage("Resource ID #0xffffffff");

    Resources.getSystem().newTheme().applyStyle(-1, false);
    assetManager.openNonAsset(0, "res/drawable/does_not_exist.png", 0);
  }

  @Test
  @Config(qualifiers = "mdpi")
  public void openNonAssetShouldOpenCorrectAssetBasedOnQualifierMdpi() throws IOException {
    assume().that(useLegacy()).isTrue();
    InputStream inputStream = assetManager.openNonAsset(0, "res/drawable/robolectric.png", 0);
    assertThat(countBytes(inputStream)).isEqualTo(8141);
  }

  @Test
  @Config(qualifiers = "hdpi")
  public void openNonAssetShouldOpenCorrectAssetBasedOnQualifierHdpi() throws IOException {
    assume().that(useLegacy()).isTrue();
    InputStream inputStream = assetManager.openNonAsset(0, "res/drawable/robolectric.png", 0);
    assertThat(countBytes(inputStream)).isEqualTo(23447);
  }

  // todo: port to ResourcesTest
  @Test
  public void multiFormatAttributes_integerDecimalValue() {
    AttributeSet attributeSet =
        Robolectric.buildAttributeSet().addAttribute(R.attr.multiformat, "16").build();
    TypedArray typedArray =
        resources.obtainAttributes(attributeSet, new int[] {R.attr.multiformat});
    TypedValue outValue = new TypedValue();
    typedArray.getValue(0, outValue);
    assertThat(outValue.type).isEqualTo(TypedValue.TYPE_INT_DEC);
  }

  // todo: port to ResourcesTest
  @Test
  public void multiFormatAttributes_integerHexValue() {
    AttributeSet attributeSet =
        Robolectric.buildAttributeSet().addAttribute(R.attr.multiformat, "0x10").build();
    TypedArray typedArray =
        resources.obtainAttributes(attributeSet, new int[] {R.attr.multiformat});
    TypedValue outValue = new TypedValue();
    typedArray.getValue(0, outValue);
    assertThat(outValue.type).isEqualTo(TypedValue.TYPE_INT_HEX);
  }

  // todo: port to ResourcesTest
  @Test
  public void multiFormatAttributes_stringValue() {
    AttributeSet attributeSet =
        Robolectric.buildAttributeSet().addAttribute(R.attr.multiformat, "Hello World").build();
    TypedArray typedArray =
        resources.obtainAttributes(attributeSet, new int[] {R.attr.multiformat});
    TypedValue outValue = new TypedValue();
    typedArray.getValue(0, outValue);
    assertThat(outValue.type).isEqualTo(TypedValue.TYPE_STRING);
  }

  // todo: port to ResourcesTest
  @Test
  public void multiFormatAttributes_booleanValue() {
    AttributeSet attributeSet =
        Robolectric.buildAttributeSet().addAttribute(R.attr.multiformat, "true").build();
    TypedArray typedArray =
        resources.obtainAttributes(attributeSet, new int[] {R.attr.multiformat});
    TypedValue outValue = new TypedValue();
    typedArray.getValue(0, outValue);
    assertThat(outValue.type).isEqualTo(TypedValue.TYPE_INT_BOOLEAN);
  }

  @Test
  public void attrsToTypedArray_shouldAllowMockedAttributeSets() {
    assume().that(useLegacy()).isTrue();
    AttributeSet mockAttributeSet = mock(AttributeSet.class);
    when(mockAttributeSet.getAttributeCount()).thenReturn(1);
    when(mockAttributeSet.getAttributeNameResource(0)).thenReturn(android.R.attr.windowBackground);
    when(mockAttributeSet.getAttributeName(0)).thenReturn("android:windowBackground");
    when(mockAttributeSet.getAttributeValue(0)).thenReturn("value");

    resources.obtainAttributes(mockAttributeSet, new int[]{android.R.attr.windowBackground});
  }

  @Test
  public void whenStyleAttrResolutionFails_attrsToTypedArray_returnsNiceErrorMessage() {
    assume().that(useLegacy()).isTrue();
    expectedException.expect(RuntimeException.class);
    expectedException.expectMessage(
        "no value for org.robolectric:attr/styleNotSpecifiedInAnyTheme in theme with applied"
            + " styles: [Style org.robolectric:Theme.Robolectric (and parents)]");

   Resources.Theme theme = resources.newTheme();
   theme.applyStyle(R.style.Theme_Robolectric, false);

    legacyShadowOf(assetManager)
        .attrsToTypedArray(
            resources,
            Robolectric.buildAttributeSet()
                .setStyleAttribute("?attr/styleNotSpecifiedInAnyTheme")
                .build(),
            new int[] {R.attr.string1},
            0,
            ((ShadowLegacyTheme) Shadow.extract(theme)).getNativePtr(),
            0);
  }

  ///////////////////////////////

  private static int countBytes(InputStream i) throws IOException {
    int count = 0;
    while (i.read() != -1) {
      count++;
    }
    i.close();
    return count;
  }
}