org.apache.beam.sdk.testing

Class FileChecksumMatcher

java.lang.Object

org.hamcrest.BaseMatcher<T>

org.hamcrest.TypeSafeMatcher<ShardedFile>

org.apache.beam.sdk.testing.FileChecksumMatcher

All Implemented Interfaces:

java.io.Serializable, SerializableMatcher<ShardedFile>, org.hamcrest.Matcher<ShardedFile>, org.hamcrest.SelfDescribing

public class FileChecksumMatcher
extends org.hamcrest.TypeSafeMatcher<ShardedFile>
implements SerializableMatcher<ShardedFile>

Matcher to verify checksum of the contents of an ShardedFile in E2E test.

For example:

 assertThat(new NumberedShardedFile(filePath), fileContentsHaveChecksum(checksumString));
 

or

 assertThat(new NumberedShardedFile(filePath, shardTemplate), fileContentsHaveChecksum(checksumString));
 

Checksum of outputs is generated based on SHA-1 algorithm. If output file is empty, SHA-1 hash of empty string (da39a3ee5e6b4b0d3255bfef95601890afd80709) is used as expected.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
void	describeMismatchSafely(ShardedFile shardedFile, org.hamcrest.Description description)
void	describeTo(org.hamcrest.Description description)
static FileChecksumMatcher	fileContentsHaveChecksum(java.lang.String checksum)
boolean	matchesSafely(ShardedFile shardedFile)

Methods inherited from class org.hamcrest.TypeSafeMatcher

describeMismatch, matches

Methods inherited from class org.hamcrest.BaseMatcher

_dont_implement_Matcher___instead_extend_BaseMatcher_, isNotNull, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.hamcrest.Matcher

_dont_implement_Matcher___instead_extend_BaseMatcher_, describeMismatch, matches

Method Detail

fileContentsHaveChecksum

public static FileChecksumMatcher fileContentsHaveChecksum(java.lang.String checksum)

matchesSafely

public boolean matchesSafely(ShardedFile shardedFile)

Specified by:

matchesSafely in class org.hamcrest.TypeSafeMatcher<ShardedFile>

describeTo

public void describeTo(org.hamcrest.Description description)

Specified by:

describeTo in interface org.hamcrest.SelfDescribing

describeMismatchSafely

public void describeMismatchSafely(ShardedFile shardedFile,
                                   org.hamcrest.Description description)

Overrides:

describeMismatchSafely in class org.hamcrest.TypeSafeMatcher<ShardedFile>