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A set of AssertJ assertion helpers geared toward testing Android.
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package org.assertj.android.api.content;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import org.assertj.core.api.AbstractAssert;

import static android.content.Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT;
import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK;
import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
import static android.content.Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET;
import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS;
import static android.content.Intent.FLAG_ACTIVITY_FORWARD_RESULT;
import static android.content.Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY;
import static android.content.Intent.FLAG_ACTIVITY_MULTIPLE_TASK;
import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
import static android.content.Intent.FLAG_ACTIVITY_NO_ANIMATION;
import static android.content.Intent.FLAG_ACTIVITY_NO_HISTORY;
import static android.content.Intent.FLAG_ACTIVITY_NO_USER_ACTION;
import static android.content.Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP;
import static android.content.Intent.FLAG_ACTIVITY_REORDER_TO_FRONT;
import static android.content.Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED;
import static android.content.Intent.FLAG_ACTIVITY_SINGLE_TOP;
import static android.content.Intent.FLAG_ACTIVITY_TASK_ON_HOME;
import static android.content.Intent.FLAG_DEBUG_LOG_RESOLUTION;
import static android.content.Intent.FLAG_FROM_BACKGROUND;
import static android.content.Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION;
import static android.content.Intent.FLAG_GRANT_READ_URI_PERMISSION;
import static android.content.Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
import static android.content.Intent.FLAG_RECEIVER_NO_ABORT;
import static android.content.Intent.FLAG_RECEIVER_REGISTERED_ONLY;
import static android.content.Intent.FLAG_INCLUDE_STOPPED_PACKAGES;
import static org.assertj.android.internal.BitmaskUtils.buildBitMaskString;
import static org.assertj.core.api.Assertions.assertThat;

/** Assertions for {@link Intent} instances. */
public class IntentAssert extends AbstractAssert {
  public IntentAssert(Intent actual) {
    super(actual, IntentAssert.class);
  }

  public IntentAssert hasAction(String action) {
    isNotNull();
    String actualAction = actual.getAction();
    assertThat(actualAction) //
        .overridingErrorMessage("Expected action <%s> but was <%s>.", action, actualAction) //
        .isEqualTo(action);
    return this;
  }

  public IntentAssert hasType(String type) {
    isNotNull();
    String actualType = actual.getType();
    assertThat(actualType) //
        .overridingErrorMessage("Expected type <%s> but was <%s>.", type, actualType) //
        .isEqualTo(type);
    return this;
  }

  public IntentAssert hasExtra(String name) {
    isNotNull();
    assertThat(actual.hasExtra(name)) //
        .overridingErrorMessage("Expected extra <%s> to be present but was not present.", name) //
        .isTrue();
    return this;
  }

  public IntentAssert hasExtra(String name, Object expectedValue) {
    hasExtra(name);
    Object actualValue = this.actual.getExtras().get(name);
    assertThat(actualValue)
        .overridingErrorMessage("Expected extra <%s> to be <%s> but was <%s>.", name, expectedValue, actualValue)
        .isEqualTo(expectedValue);
    return this;
  }

  public IntentAssert hasFlags(@IntentFlags int flags) {
    isNotNull();
    int actualFlags = actual.getFlags();
    //noinspection ResourceType
    assertThat(actualFlags).overridingErrorMessage("Expected <%s> but was <%s>.",
        flagsToString(flags), flagsToString(actualFlags)).isEqualTo(flags);
    return this;
  }

  public IntentAssert hasPackage(String packageName) {
    isNotNull();
    String actualPackage = actual.getPackage();
    assertThat(packageName)
        .overridingErrorMessage("Expected package <%s> but was <%s>.", packageName, actualPackage)
        .isEqualTo(actualPackage);
    return this;
    }

  public IntentAssert hasData(String uri) {
    return hasData(Uri.parse(uri));
  }

  public IntentAssert hasData(Uri uri) {
    isNotNull();
    Uri actualUri = actual.getData();
    assertThat(actualUri.compareTo(uri)) //
        .overridingErrorMessage("Expected data Uri <%s> but was <%s>.", uri, actualUri)
        .isEqualTo(0);
    return this;
  }

  public IntentAssert hasComponent(ComponentName expected) {
    isNotNull();
    ComponentName componentName = actual.getComponent();
    assertThat(componentName).isNotNull()
        .overridingErrorMessage("Expected component name <%s> but was <%s>.",
            expected.flattenToString(), componentName.flattenToString())
        .isEqualTo(expected);
    return this;
  }

  public IntentAssert hasComponent(Context context, Class cls) {
    return hasComponent(new ComponentName(context, cls.getName()));
  }

  public IntentAssert hasComponent(String appPkg, Class cls) {
    return hasComponent(new ComponentName(appPkg, cls.getName()));
  }

  public static String flagsToString(@IntentFlags int flags) {
    return buildBitMaskString(flags) //
        .flag(FLAG_GRANT_PERSISTABLE_URI_PERMISSION, "grant_persistable_uri_permission")
        .flag(FLAG_GRANT_READ_URI_PERMISSION, "grant_read_uri_permission")
        .flag(FLAG_GRANT_WRITE_URI_PERMISSION, "grant_write_uri_permission")
        .flag(FLAG_DEBUG_LOG_RESOLUTION, "debug_log_resolution")
        .flag(FLAG_FROM_BACKGROUND, "from_background")
        .flag(FLAG_ACTIVITY_BROUGHT_TO_FRONT, "activity_brought_to_front")
        .flag(FLAG_ACTIVITY_CLEAR_TASK, "activity_clear_task")
        .flag(FLAG_ACTIVITY_CLEAR_TOP, "activity_clear_top")
        .flag(FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, "activity_clear_when_task_reset")
        .flag(FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS, "activity_exclude_from_recents")
        .flag(FLAG_ACTIVITY_FORWARD_RESULT, "activity_forward_result")
        .flag(FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY, "activity_launched_from_history")
        .flag(FLAG_ACTIVITY_MULTIPLE_TASK, "activity_multiple_task")
        .flag(FLAG_ACTIVITY_NEW_TASK, "activity_new_task")
        .flag(FLAG_ACTIVITY_NO_ANIMATION, "activity_no_animation")
        .flag(FLAG_ACTIVITY_NO_HISTORY, "activity_no_history")
        .flag(FLAG_RECEIVER_NO_ABORT, "receiver_no_abort")
        .flag(FLAG_RECEIVER_REGISTERED_ONLY, "receiver_registered_only")
        .flag(FLAG_ACTIVITY_NO_USER_ACTION, "activity_no_user_action")
        .flag(FLAG_ACTIVITY_PREVIOUS_IS_TOP, "activity_previous_is_top")
        .flag(FLAG_ACTIVITY_RESET_TASK_IF_NEEDED, "activity_reset_task_if")
        .flag(FLAG_ACTIVITY_REORDER_TO_FRONT, "activity_reorder_to_front")
        .flag(FLAG_ACTIVITY_SINGLE_TOP, "activity_single_top")
        .flag(FLAG_ACTIVITY_TASK_ON_HOME, "activity_task_on_home")
        .flag(FLAG_INCLUDE_STOPPED_PACKAGES, "include_stopped_packages")
        .get();
  }
}