org.apache.beam.sdk.testing

Class FileChecksumMatcher

java.lang.Object

org.hamcrest.BaseMatcher<T>

org.hamcrest.TypeSafeMatcher<org.apache.beam.sdk.util.ShardedFile>

org.apache.beam.sdk.testing.FileChecksumMatcher

All Implemented Interfaces:

java.io.Serializable, SerializableMatcher<org.apache.beam.sdk.util.ShardedFile>, Matcher<org.apache.beam.sdk.util.ShardedFile>, SelfDescribing

public class FileChecksumMatcher
extends TypeSafeMatcher<org.apache.beam.sdk.util.ShardedFile>
implements SerializableMatcher<org.apache.beam.sdk.util.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(org.apache.beam.sdk.util.ShardedFile shardedFile, Description description)
void	describeTo(Description description)
static FileChecksumMatcher	fileContentsHaveChecksum(java.lang.String checksum)
boolean	matchesSafely(org.apache.beam.sdk.util.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(org.apache.beam.sdk.util.ShardedFile shardedFile)

Specified by:

matchesSafely in class TypeSafeMatcher<org.apache.beam.sdk.util.ShardedFile>

describeTo

public void describeTo(Description description)

Specified by:

describeTo in interface SelfDescribing

describeMismatchSafely

public void describeMismatchSafely(org.apache.beam.sdk.util.ShardedFile shardedFile,
                                   Description description)

Overrides:

describeMismatchSafely in class TypeSafeMatcher<org.apache.beam.sdk.util.ShardedFile>