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package org.robolectric.shadows;
import static android.os.Build.VERSION_CODES.Q;
import static java.time.ZoneOffset.UTC;
import static org.robolectric.shadows.ShadowLooper.assertLooperMode;
import android.os.SimpleClock;
import android.os.SystemClock;
import java.time.DateTimeException;
import java.time.Duration;
import java.util.concurrent.TimeUnit;
import org.robolectric.annotation.Implementation;
import org.robolectric.annotation.Implements;
import org.robolectric.annotation.LooperMode;
import org.robolectric.annotation.LooperMode.Mode;
/**
* The shadow API for {@link SystemClock}.
*
* The behavior of SystemClock in Robolectric will differ based on the current {@link
* LooperMode}. See {@link ShadowLegacySystemClock} and {@link ShadowPausedSystemClock} for more
* details.
*/
@Implements(value = SystemClock.class, shadowPicker = ShadowSystemClock.Picker.class,
looseSignatures = true)
public abstract class ShadowSystemClock {
protected static boolean networkTimeAvailable = true;
private static boolean gnssTimeAvailable = true;
/**
* Implements {@link System#currentTimeMillis} through ShadowWrangler.
*
* @return Current time in millis.
*/
@SuppressWarnings("unused")
public static long currentTimeMillis() {
return ShadowLegacySystemClock.currentTimeMillis();
}
/**
* Implements {@link System#nanoTime}.
*
* @return Current time with nanos.
* @deprecated Don't call this method directly; instead, use {@link System#nanoTime()}.
*/
@SuppressWarnings("unused")
@Deprecated
public static long nanoTime() {
return ShadowSystem.nanoTime();
}
/**
* Sets the value for {@link System#nanoTime()}.
*
* <p>May only be used for {@link LooperMode.Mode#LEGACY}. For {@link LooperMode.Mode#PAUSED},
* {@param nanoTime} is calculated based on {@link SystemClock#uptimeMillis()} and can't be set
* explicitly.
*/
public static void setNanoTime(long nanoTime) {
assertLooperMode(Mode.LEGACY);
ShadowLegacySystemClock.setNanoTime(nanoTime);
}
/** Sets whether network time is available. */
public static void setNetworkTimeAvailable(boolean available) {
networkTimeAvailable = available;
}
/**
* An alternate to {@link #advanceBy(Duration)} for older Android code bases where Duration is not
* available.
*/
public static void advanceBy(long time, TimeUnit unit) {
SystemClock.setCurrentTimeMillis(SystemClock.uptimeMillis() + unit.toMillis(time));
}
/**
* A convenience method for advancing the clock via {@link SystemClock#setCurrentTimeMillis(long)}
*
* @param duration The interval by which to advance.
*/
public static void advanceBy(Duration duration) {
SystemClock.setCurrentTimeMillis(SystemClock.uptimeMillis() + duration.toMillis());
}
@Implementation(minSdk = Q)
protected static Object currentGnssTimeClock() {
if (gnssTimeAvailable) {
return new SimpleClock(UTC) {
@Override
public long millis() {
return SystemClock.uptimeMillis();
}
};
} else {
throw new DateTimeException("Gnss based time is not available.");
}
}
/** Sets whether gnss location based time is available. */
public static void setGnssTimeAvailable(boolean available) {
gnssTimeAvailable = available;
}
public static void reset() {
networkTimeAvailable = true;
gnssTimeAvailable = true;
}
public static class Picker extends LooperShadowPicker<ShadowSystemClock> {
public Picker() {
super(ShadowLegacySystemClock.class, ShadowPausedSystemClock.class);
}
}
}
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