Hi!
I've committed the first unit test for a plugin at revision 2614.
org.openjump.core.ui.plugin.tools.UnionByAttributePlugInTest
There is only one single test case, but more will follow.
Since I really like to practicise behaviour-driven development (BDD),
I've tried to adapt given-when-then like scenarios via comments.
Here is a small snipped of code to get an impression on how a
test case looks:
@Test
public void testAddedResultLayer() throws Exception {
// given: "a loaded shapefile fixture"
File fixture = new File("src/fixtures/dissolve.jml");
TestTools.openFile(fixture, workbench.getContext());
// and: "plugin with dialog values"
PlugIn plugin = new UnionByAttributePlugIn();
LayerManager layerManager = workbench.getContext().getLayerManager();
HashMap<String, Object> parameters = new HashMap<String, Object>();
parameters.put("layer", layerManager.getLayer("dissolve"));
parameters.put("use_attribute", true);
parameters.put("attribute", "LABEL");
parameters.put("ignore_empty", false);
parameters.put("merge_linestrings", false);
parameters.put("aggregate_unused_fields", false);
TestTools.configurePlugIn(plugin, parameters);
// when: "union by attribute is called"
TestTools.executePlugIn(plugin, workbench.getContext());
// then: "layer manager contains the source and result layer"
assertEquals(2, layerManager.getLayers().size());
//Thread.sleep(Integer.MAX_VALUE);
}
How to run a test:
1. Open UnionByAttributePlugInTest in Eclipse (CTRL+SHIFT+T helps)
2. Menubar: Run > Run As > JUnit Test
(/lib/junit.jar must be in the classpath)
Greetings
Benjamin
P.S.:
Some of the concepts of BDD are described practically in [1].
The description is from the documentation for Spock, an
specification framework for the programming language Groovy.
[1] http://code.google.com/p/spock/wiki/SpockBasics
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