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Improve the error message when an extractor dump file is not found

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PiperOrigin-RevId: 307078446
This commit is contained in:
ibaker 2020-04-17 19:15:11 +01:00 committed by Oliver Woodman
parent 7ea83d7167
commit 9937744f0e
1 changed files with 15 additions and 9 deletions
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24
testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeExtractorOutput.java
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@ -27,6 +27,7 @@ import com.google.android.exoplayer2.extractor.ExtractorOutput;
import com.google.android.exoplayer2.extractor.SeekMap;
import com.google.android.exoplayer2.util.Assertions;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.annotation.Documented;
@ -34,11 +35,14 @@ import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
/**
* A fake {@link ExtractorOutput}.
*/
/** A fake {@link ExtractorOutput}. */
public final class FakeExtractorOutput implements ExtractorOutput, Dumper.Dumpable {
private static final String DUMP_UPDATE_INSTRUCTIONS =
"To update the dump file, change FakeExtractorOutput#DUMP_FILE_ACTION to WRITE_TO_LOCAL (for"
+ " Robolectric tests) or WRITE_TO_DEVICE (for instrumentation tests) and re-run the"
+ " test.";
/**
* Possible actions to take with the dumps generated from this {@code FakeExtractorOutput} in
* {@link #assertOutput(Context, String)}.
@ -128,13 +132,15 @@ public final class FakeExtractorOutput implements ExtractorOutput, Dumper.Dumpab
String actual = new Dumper().add(this).toString();
if (DUMP_FILE_ACTION == COMPARE_WITH_EXISTING) {
String expected = TestUtil.getString(context, dumpFile);
String expected;
try {
expected = TestUtil.getString(context, dumpFile);
} catch (FileNotFoundException e) {
throw new IOException("Dump file not found. " + DUMP_UPDATE_INSTRUCTIONS, e);
}
assertWithMessage(
"Extractor output doesn't match golden file: %s\n"
+ "To update the golden, change FakeExtractorOutput#DUMP_FILE_ACTION to"
+ " WRITE_TO_LOCAL (for Robolectric tests) or WRITE_TO_DEVICE (for"
+ " instrumentation tests) and re-run the test.",
dumpFile)
"Extractor output doesn't match dump file: %s\n%s",
dumpFile, DUMP_UPDATE_INSTRUCTIONS)
.that(actual)
.isEqualTo(expected);
} else {