private void assertStructures(boolean structuresExpected) {
		Map<String, Structure> structures = getStructures(provider);
		if (!structuresExpected) {
			assertEquals(0, structures.size());
		}
		else {
			assertTrue(structures.size() > 0);
		}
	}
Tests for managing categories through the data manager plugin and tests for
actions being enabled when a node is selected.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/datamgr/DataTypeManagerPluginTest.java