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Add tests for Util.toByteArray

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The implementation of these methods is changed in a follow-up CL, and
these tests help to ensure nothing breaks.

This doesn't include tests for `toByteArray(InputStream)` or
`toByteArray(int)` because these implementations are fully replaced by
Guava equivalents in a follow-up CL.

PiperOrigin-RevId: 613581845
This commit is contained in:
ibaker 2024-03-07 07:47:31 -08:00 committed by Copybara-Service
parent ab8b77a6d3
commit 5b48ef4e53
1 changed files with 29 additions and 0 deletions
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29
libraries/common/src/test/java/androidx/media3/common/util/UtilTest.java
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@ -47,8 +47,10 @@ import android.os.Looper;
import android.util.SparseArray; import android.util.SparseArray;
import android.util.SparseLongArray; import android.util.SparseLongArray;
import androidx.media3.common.C; import androidx.media3.common.C;
import androidx.media3.test.utils.TestUtil;
import androidx.test.ext.junit.runners.AndroidJUnit4; import androidx.test.ext.junit.runners.AndroidJUnit4;
import com.google.common.io.ByteStreams; import com.google.common.io.ByteStreams;
import com.google.common.primitives.Bytes;
import com.google.common.util.concurrent.Futures; import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture; import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.SettableFuture; import com.google.common.util.concurrent.SettableFuture;
@ -76,6 +78,33 @@ public class UtilTest {
private static final int TIMEOUT_MS = 10000; private static final int TIMEOUT_MS = 10000;
@Test
public void toByteArray_fromIntArray() {
assertThat(Util.toByteArray(Integer.MIN_VALUE, -1, 0, 1, Integer.MAX_VALUE))
.isEqualTo(
Bytes.concat(
TestUtil.createByteArray(0x80, 0, 0, 0),
TestUtil.createByteArray(0xFF, 0xFF, 0xFF, 0xFF),
TestUtil.createByteArray(0, 0, 0, 0),
TestUtil.createByteArray(0, 0, 0, 1),
TestUtil.createByteArray(0x7F, 0xFF, 0xFF, 0xFF)));
}
@Test
public void toByteArray_fromFloat() {
assertThat(Util.toByteArray(Float.MAX_VALUE))
.isEqualTo(TestUtil.createByteArray(0x7F, 0x7F, 0xFF, 0xFF));
assertThat(Util.toByteArray(Float.MIN_VALUE))
.isEqualTo(TestUtil.createByteArray(0x00, 0x00, 0x00, 0x01));
assertThat(Util.toByteArray(0)).isEqualTo(TestUtil.createByteArray(0x00, 0x00, 0x00, 0x00));
assertThat(Util.toByteArray(1.0f)).isEqualTo(TestUtil.createByteArray(0x3F, 0x80, 0x00, 0x00));
assertThat(Util.toByteArray(-1.0f)).isEqualTo(TestUtil.createByteArray(0xBF, 0x80, 0x00, 0x00));
}
@Test @Test
public void addWithOverflowDefault_withoutOverFlow_returnsSum() { public void addWithOverflowDefault_withoutOverFlow_returnsSum() {
long res = Util.addWithOverflowDefault(5, 10, /* overflowResult= */ 0); long res = Util.addWithOverflowDefault(5, 10, /* overflowResult= */ 0);