Class DiffBuilder

java.lang.Object

org.xmlunit.builder.DiffBuilder

All Implemented Interfaces:

DifferenceEngineConfigurer<DiffBuilder>

public class DiffBuilder
extends Object
implements DifferenceEngineConfigurer<DiffBuilder>

DiffBuilder to create a Diff instance.

Valid inputs for control and test are all Objects supported by Input.from(Object).

Example Usage:

String controlXml = "<a><b>Test Value</b></a>";
String testXml = "<a>\n <b>\n  Test Value\n </b>\n</a>";
Diff myDiff = DiffBuilder.compare(Input.fromString(controlXml)).withTest(Input.fromString(testXml))
    .checkForSimilar()
    .ignoreWhitespace()
    .build();
assertFalse("XML similar " + myDiff.toString(), myDiff.hasDifferences());

Method Summary

Modifier and Type	Method	Description
Diff	build()	Compare the Test-XML withTest(Object) with the Control-XML compare(Object) and return the collected differences in a Diff object.
DiffBuilder	checkForIdentical()	check test source with the control source for identically.
DiffBuilder	checkForSimilar()	check test source with the control source for similarity.
static DiffBuilder	compare(Object control)	Create a DiffBuilder from all kind of types supported by Input.from(Object).
DiffBuilder	ignoreComments()	Will remove all comment-Tags "<!-- Comment -->" from test- and control-XML before comparing.
DiffBuilder	ignoreCommentsUsingXSLTVersion(String xsltVersion)	Will remove all comment-Tags "<!-- Comment -->" from test- and control-XML before comparing.
DiffBuilder	ignoreElementContentWhitespace()	Ignore element content whitespace by removing all text nodes solely consisting of whitespace.
DiffBuilder	ignoreWhitespace()	Ignore whitespace by removing all empty text nodes and trimming the non-empty ones.
DiffBuilder	normalizeWhitespace()	Normalize Text-Elements by removing all empty text nodes and normalizing the non-empty ones.
DiffBuilder	withAttributeFilter(Predicate<Attr> attributeFilter)	Registers a filter for attributes.
DiffBuilder	withComparisonController(ComparisonController comparisonController)	Replace the ComparisonControllers.Default with your own ComparisonController.
DiffBuilder	withComparisonFormatter(ComparisonFormatter formatter)	Sets a non-default formatter for the differences found.
DiffBuilder	withComparisonListeners(ComparisonListener... comparisonListeners)	Registers listeners that are notified of each comparison.
DiffBuilder	withDifferenceEvaluator(DifferenceEvaluator differenceEvaluator)	Provide your own custom DifferenceEvaluator implementation.
DiffBuilder	withDifferenceListeners(ComparisonListener... comparisonListeners)	Registers listeners that are notified of each comparison with outcome other than ComparisonResult.EQUAL.
DiffBuilder	withDocumentBuilderFactory(DocumentBuilderFactory f)	Sets the DocumentBuilderFactory to use when creating a Document from the Sources to compare.
DiffBuilder	withNamespaceContext(Map<String,String> prefix2Uri)	Establish a namespace context that will be used in Comparison.Detail#getXPath.
DiffBuilder	withNodeFilter(Predicate<Node> nodeFilter)	Registers a filter for nodes.
DiffBuilder	withNodeMatcher(NodeMatcher nodeMatcher)	Sets the strategy for selecting nodes to compare.
DiffBuilder	withTest(Object test)	Set the Test-Source from all kind of types supported by Input.from(Object).

Methods inherited from class Object

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

Method Details

compare

public static DiffBuilder compare(Object control)

Create a DiffBuilder from all kind of types supported by Input.from(Object).

Parameters:

control - the expected reference document.

Returns:

a new builder

withTest

public DiffBuilder withTest(Object test)

Set the Test-Source from all kind of types supported by Input.from(Object).

Parameters:

test - the test document which must be compared with the control document.

Returns:

this

ignoreWhitespace

public DiffBuilder ignoreWhitespace()

Ignore whitespace by removing all empty text nodes and trimming the non-empty ones.

If you only want to remove text nodes consisting solely of whitespace (AKA element content whitespace) but leave all other text nodes alone you should use ignoreElementContentWhitespace() instead.

Returns:

this

normalizeWhitespace

public DiffBuilder normalizeWhitespace()

Normalize Text-Elements by removing all empty text nodes and normalizing the non-empty ones.

"normalized" in this context means all whitespace characters are replaced by space characters and consecutive whitespace characters are collapsed.

Returns:

this

ignoreElementContentWhitespace

public DiffBuilder ignoreElementContentWhitespace()

Ignore element content whitespace by removing all text nodes solely consisting of whitespace.

Returns:

this

Since:

XMLUnit 2.6.0

ignoreComments

public DiffBuilder ignoreComments()

Will remove all comment-Tags "<!-- Comment -->" from test- and control-XML before comparing.

Comments are ignored by applying an XSLT transformation on the source which may reduce the effect of withDocumentBuilderFactory(DocumentBuilderFactory). If you need more control over the transformation build the Source using a transformation yourself, using CommentLessSource.STYLE.

Returns:

this

ignoreCommentsUsingXSLTVersion

public DiffBuilder ignoreCommentsUsingXSLTVersion(String xsltVersion)

Will remove all comment-Tags "<!-- Comment -->" from test- and control-XML before comparing.

Comments are ignored by applying an XSLT transformation on the source which may reduce the effect of withDocumentBuilderFactory(DocumentBuilderFactory). This uses the CommentLessSource constructor with two arguments using xsltVersion as second argument.

Parameters:

xsltVersion - use this version for the stylesheet

Returns:

this

Since:

XMLUnit 2.5.0

withNodeMatcher

public DiffBuilder withNodeMatcher(NodeMatcher nodeMatcher)

Sets the strategy for selecting nodes to compare.

Example with DefaultNodeMatcher:

.withNodeMatcher(new DefaultNodeMatcher(ElementSelectors.byNameAndText))

This overwrites any NodeMatcher set via earlier invocations of withNodeMatcher.

Specified by:

withNodeMatcher in interface DifferenceEngineConfigurer<DiffBuilder>

Parameters:

nodeMatcher - the NodeMatcher to use

Returns:

this

See Also:

• DifferenceEngine.setNodeMatcher(NodeMatcher)

withDifferenceEvaluator

public DiffBuilder withDifferenceEvaluator(DifferenceEvaluator differenceEvaluator)

Provide your own custom DifferenceEvaluator implementation. This overwrites the Default DifferenceEvaluator. If you want use your custom DifferenceEvaluator in combination with the default or another DifferenceEvaluator you should use DifferenceEvaluators.chain(DifferenceEvaluator...) or DifferenceEvaluators.first(DifferenceEvaluator...) to combine them:

Diff myDiff = DiffBuilder.compare(control).withTest(test)
        .withDifferenceEvaluator(
            DifferenceEvaluators.chain(
                DifferenceEvaluators.Default,
                new MyCustomDifferenceEvaluator()))
        ....
        .build();

This overwrites any DifferenceEvaluator set via earlier invocations of withDifferenceEvaluator.

Specified by:

withDifferenceEvaluator in interface DifferenceEngineConfigurer<DiffBuilder>

Parameters:

differenceEvaluator - the DifferenceEvaluator to use

Returns:

this

withComparisonController

public DiffBuilder withComparisonController(ComparisonController comparisonController)

Replace the ComparisonControllers.Default with your own ComparisonController.

Example use:

Diff myDiff = DiffBuilder.compare(control).withTest(test)
     .withComparisonController(ComparisonControllers.StopWhenDifferent)
     .build();

This overwrites any ComparisonController set via earlier invocations of withComparisonController.

Specified by:

withComparisonController in interface DifferenceEngineConfigurer<DiffBuilder>

Parameters:

comparisonController - ComparisonController to use

Returns:

this

withComparisonListeners

public DiffBuilder withComparisonListeners(ComparisonListener... comparisonListeners)

Registers listeners that are notified of each comparison.

This overwrites any ComparisonListeners set via earlier invocations of withComparisonListeners.

Specified by:

withComparisonListeners in interface DifferenceEngineConfigurer<DiffBuilder>

Parameters:

comparisonListeners - ComparisonListeners to use

Returns:

this

See Also:

• DifferenceEngine.addComparisonListener(ComparisonListener)

withDifferenceListeners

public DiffBuilder withDifferenceListeners(ComparisonListener... comparisonListeners)

Registers listeners that are notified of each comparison with outcome other than ComparisonResult.EQUAL.

This overwrites any ComparisonListeners set via earlier invocations of withDifferenceListeners.

Specified by:

withDifferenceListeners in interface DifferenceEngineConfigurer<DiffBuilder>

Parameters:

comparisonListeners - ComparisonListeners to use

Returns:

this

See Also:

• DifferenceEngine.addDifferenceListener(ComparisonListener)

checkForSimilar

public DiffBuilder checkForSimilar()

check test source with the control source for similarity.

Example for Similar: The XML node "<a>Text</a>" and "<a><![CDATA[Text]]></a>" are similar and the Test will not fail.

The rating, if a node is similar, will be done by the DifferenceEvaluators.Default. See withDifferenceEvaluator(DifferenceEvaluator)

Default is checkForIdentical().

Returns:

this

checkForIdentical

public DiffBuilder checkForIdentical()

check test source with the control source for identically.

This is the Default.

Returns:

this

withNamespaceContext

public DiffBuilder withNamespaceContext(Map<String,String> prefix2Uri)

Establish a namespace context that will be used in Comparison.Detail#getXPath.

Without a namespace context (or with an empty context) the XPath expressions will only use local names for elements and attributes.

This overwrites any Map set via earlier invocations of withNamespaceContext.

Specified by:

withNamespaceContext in interface DifferenceEngineConfigurer<DiffBuilder>

Parameters:

prefix2Uri - mapping between prefix and namespace URI

Returns:

this

withAttributeFilter

public DiffBuilder withAttributeFilter(Predicate<Attr> attributeFilter)

Registers a filter for attributes.

Only attributes for which the predicate returns true are part of the comparison. By default all attributes are considered.

The "special" namespace, namespace-location and schema-instance-type attributes can not be ignored this way. If you want to suppress comparison of them you'll need to implement DifferenceEvaluator.

This overwrites any Predicate set via earlier invocations of withAttributeFilter.

Specified by:

withAttributeFilter in interface DifferenceEngineConfigurer<DiffBuilder>

Parameters:

attributeFilter - attribute filter to use

Returns:

this

withNodeFilter

public DiffBuilder withNodeFilter(Predicate<Node> nodeFilter)

Registers a filter for nodes.

Only nodes for which the predicate returns true are part of the comparison. By default nodes that are not document types are considered.

This overwrites any Predicate set via earlier invocations of withNodeFilter.

Specified by:

withNodeFilter in interface DifferenceEngineConfigurer<DiffBuilder>

Parameters:

nodeFilter - node filter to use

Returns:

this

withComparisonFormatter

public DiffBuilder withComparisonFormatter(ComparisonFormatter formatter)

Sets a non-default formatter for the differences found.

This overwrites any ComparisonFormatter set via earlier invocations of withComparisonFormatter.

Specified by:

withComparisonFormatter in interface DifferenceEngineConfigurer<DiffBuilder>

Parameters:

formatter - formatter to use

Returns:

this

withDocumentBuilderFactory

public DiffBuilder withDocumentBuilderFactory(DocumentBuilderFactory f)

Sets the DocumentBuilderFactory to use when creating a Document from the Sources to compare.

This is only used if the Sources used for control and test not already are DOMSources.

Parameters:

f - the DocumentBuilderFactory to use

Returns:

this

Since:

XMLUnit 2.2.0

build

public Diff build()

Compare the Test-XML withTest(Object) with the Control-XML compare(Object) and return the collected differences in a Diff object.

Returns:

the collected differences