Module org.opengis.geoapi.conformance

Package org.opengis.test.coverage.image

Class ImageIOTestCase

Object

TestCase

ImageIOTestCase

Direct Known Subclasses:

ImageWriterTestCase

public abstract class ImageIOTestCase
extends TestCase

Base class for all image I/O tests.

Since:

3.1

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	isSourceBandsSupported	true if the reader or writer takes in account the parameter value given to IIOParam.setSourceBands(int[]).
protected boolean	isSubregionSupported	true if the reader or writer takes in account the parameter value given to IIOParam.setSourceRegion(Rectangle).
protected boolean	isSubsamplingOffsetSupported	true if the reader or writer takes in account the two last parameter values given to IIOParam.setSourceSubsampling(int, int, int, int).
protected boolean	isSubsamplingSupported	true if the reader or writer takes in account the two first parameter values given to IIOParam.setSourceSubsampling(int, int, int, int).
protected double	sampleToleranceThreshold	The tolerance threshold to use when comparing floating point numbers.

Fields inherited from class org.opengis.test.TestCase

configurationTip, units, validators

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ImageIOTestCase()	Creates a new test case using a default random number generator.
protected	ImageIOTestCase(long seed)	Creates a new test case using a random number generator initialized to the given seed.

Method Summary

Methods inherited from class org.opengis.test.TestCase

configuration, getEnabledFlags

Methods inherited from class java.lang.Object

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

Field Details

isSubregionSupported

protected boolean isSubregionSupported

true if the reader or writer takes in account the parameter value given to IIOParam.setSourceRegion(Rectangle). The default value is true. Subclasses can set this flag to false when testing an incomplete implementation.

isSubsamplingSupported

protected boolean isSubsamplingSupported

true if the reader or writer takes in account the two first parameter values given to IIOParam.setSourceSubsampling(int, int, int, int). The default value is true. Subclasses can set this flag to false when testing an incomplete implementation.

isSubsamplingOffsetSupported

protected boolean isSubsamplingOffsetSupported

true if the reader or writer takes in account the two last parameter values given to IIOParam.setSourceSubsampling(int, int, int, int). The default value is true. Subclasses can set this flag to false when testing an incomplete implementation.

isSourceBandsSupported

protected boolean isSourceBandsSupported

true if the reader or writer takes in account the parameter value given to IIOParam.setSourceBands(int[]). The default value is true. Subclasses can set this flag to false if this feature cannot be tested for the current implementation.

Note that this feature cannot be tested with some standard readers like PNG, because those readers require an explicit destination image to be specified if the number of bands to read differs from the number of bands in the source image.

sampleToleranceThreshold

protected double sampleToleranceThreshold

The tolerance threshold to use when comparing floating point numbers. The default value is 0. Subclasses can relax this tolerance threshold if needed.

This threshold applies only to values of type float and double; it doesn't apply to integer types.

Constructor Details

ImageIOTestCase

protected ImageIOTestCase()

Creates a new test case using a default random number generator. The sub-regions, sub-samplings and source bands will be different for every test execution. If reproducible subsetting sequences are needed, use the ImageIOTestCase(long) constructor instead.

ImageIOTestCase

protected ImageIOTestCase(long seed)

Creates a new test case using a random number generator initialized to the given seed.

Parameters:

seed - the initial seed for the random numbers generator. Use a constant value if the tests need to be reproduced with the same sequence of image parameters.