public void TestBehaviourWhenNoCachingIsChosen()
{
cacheTestTransformationAdapterProjNet = new CrsTransformationAdapterProjNet(CrsCachingStrategy.NO_CACHING);
Assert.IsFalse(
cacheTestTransformationAdapterProjNet.IsEpsgCached(
cacheTestForOutputEpsgNumberNotExisting
)
);
Assert.IsFalse(
cacheTestTransformationAdapterProjNet.IsEpsgCached(
EpsgNumber.SWEDEN__SWEREF99_TM__3006
)
);
// The transform method below may potentially trigger
// the used epsg code (the second parameter) to become cached
// (but that behaviour depends on the caching strategy)
cacheTestTransformationAdapterProjNet.Transform(
cacheTestInputCoordinateWgs84,
cacheTestForOutputEpsgNumberNotExisting
);
// The above output CRS was a non-existing EPSG number
// but below is an existing EPSG number used.
cacheTestTransformationAdapterProjNet.Transform(
cacheTestInputCoordinateWgs84,
EpsgNumber.SWEDEN__SWEREF99_TM__3006
);
// Neither of the above are still not cached since caching is disabled
Assert.IsFalse(
cacheTestTransformationAdapterProjNet.IsEpsgCached(
cacheTestForOutputEpsgNumberNotExisting
)
);
Assert.IsFalse(
cacheTestTransformationAdapterProjNet.IsEpsgCached(
EpsgNumber.SWEDEN__SWEREF99_TM__3006
)
);
}
private void VerifyExpectedCachingBehaviour(
CrsCachingStrategy crsCachingStrategy
)
{
cacheTestTransformationAdapterProjNet = new CrsTransformationAdapterProjNet(crsCachingStrategy);
Assert.IsFalse(
cacheTestTransformationAdapterProjNet.IsEpsgCached(
cacheTestForOutputEpsgNumberNotExisting
)
);
// The transform method below may potentially trigger
// the used epsg code (the second parameter) to become cached
// (but that behaviour depends on the caching strategy
// i.e. it must not be NO_CACHING)
cacheTestTransformationAdapterProjNet.Transform(
cacheTestInputCoordinateWgs84,
cacheTestForOutputEpsgNumberNotExisting
);
// It should be true below.
// Indeed the lookup is cached even though it is a non-existin
// EPSG number (i.e. "null" is cached)
// since you do likely not want to read the file
// many times (if you have specified that you want caching)
// just to get null again, so therefore the null value
// is also cached as a kind of value in the semantic of the below method
Assert.IsTrue(
cacheTestTransformationAdapterProjNet.IsEpsgCached(
cacheTestForOutputEpsgNumberNotExisting
)
);
if (crsCachingStrategy == CrsCachingStrategy.CACHE_ALL_EPSG_CRS_CODES)
{
// The EPSG number below have not been directly used yet in this test method
// (e.g. as the input coordinate or the output CRS for a transformation)
// but since everything (according to the above if statement we are now within)
// should have been cached it should be cached already anyway now
Assert.IsTrue(
cacheTestTransformationAdapterProjNet.IsEpsgCached(
EpsgNumber.SWEDEN__SWEREF99_TM__3006
)
);
}
else if (crsCachingStrategy == CrsCachingStrategy.CACHE_EPSG_CRS_CODE_WHEN_FIRST_USED)
{
Assert.IsFalse(
cacheTestTransformationAdapterProjNet.IsEpsgCached(
EpsgNumber.SWEDEN__SWEREF99_TM__3006
)
);
// but after a transformation below it should be cached
cacheTestTransformationAdapterProjNet.Transform(
cacheTestInputCoordinateWgs84,
EpsgNumber.SWEDEN__SWEREF99_TM__3006
);
Assert.IsTrue(
cacheTestTransformationAdapterProjNet.IsEpsgCached(
EpsgNumber.SWEDEN__SWEREF99_TM__3006
)
);
}
}