def test_ncss(self):
test_data_folder = self.cur_dir / "ncss"
for filepath in test_data_folder.glob("*.java"):
with self.subTest(f"Testing decomposition of {filepath}"):
ast = AST.build_from_javalang(build_ast(filepath))
classes_ast = [
ast.get_subtree(node)
for node in ast.get_root().types
if node.node_type == ASTNodeType.CLASS_DECLARATION
]
ncss_metric = NCSSMetric()
# NCSS of a class may not be equal to sum of ncss of methods and fields
# due to presence of nested classes. To bypass it we calculate NCSS only
# of methods and fields.
methods_ncss = 0
fields_ncss = 0
components_ncss = 0
components_qty = 0
for class_ast in classes_ast:
class_declaration = class_ast.get_root()
for method in class_declaration.methods:
methods_ncss += ncss_metric.value(class_ast.get_subtree(method))
for field in class_declaration.fields:
fields_ncss += ncss_metric.value(class_ast.get_subtree(field))
for component in decompose_java_class(class_ast, "strong"):
components_qty += 1
components_ncss += ncss_metric.value(component)
# Each component has a CLASS_DECLARATION node. It increase NCSS of each component by 1.
# To achieve equality we add number of components to the sum of NCSS of just methods and fields.
self.assertEqual(methods_ncss + fields_ncss + components_qty, components_ncss)
def testAnotherScore(self):
file = 'test/metrics/ncss/WebAppsImpl.java'
metric = NCSSMetric()
res = metric.value(file)
self.assertEqual(res, 1429)
def testBasicExample(self):
file = 'test/metrics/ncss/BasicExample.java'
metric = NCSSMetric()
res = metric.value(file)
self.assertEqual(res, 12)
def testHighScore(self):
file = 'test/metrics/ncss/YarnConfiguration.java'
metric = NCSSMetric()
res = metric.value(file)
self.assertEqual(res, 1301)
def testMediumScore(self):
file = 'test/metrics/ncss/WorkflowRunActionRepetitionDefinitionInner.java'
metric = NCSSMetric()
res = metric.value(file)
self.assertEqual(res, 73)
def testLowScore(self):
file = 'test/metrics/ncss/GraalSDK.java'
metric = NCSSMetric()
res = metric.value(file)
self.assertEqual(res, 2)
def testZeroScore(self):
file = 'test/metrics/ncss/Empty.java'
metric = NCSSMetric()
res = metric.value(file)
self.assertEqual(res, 0)
def testFinallyBlock(self):
file = "test/metrics/ncss/FinallyBlock.java"
ast = AST.build_from_javalang(build_ast(file))
metric = NCSSMetric()
res = metric.value(ast)
self.assertEqual(res, 7)
def testChainedIfElseWithTrailingElse(self):
file = "test/metrics/ncss/ChainedIfElseWithTrailingElse.java"
ast = AST.build_from_javalang(build_ast(file))
metric = NCSSMetric()
res = metric.value(ast)
self.assertEqual(res, 12)
def testSimpleExample2(self):
file = "test/metrics/ncss/SimpleExample2.java"
ast = AST.build_from_javalang(build_ast(file))
metric = NCSSMetric()
res = metric.value(ast)
self.assertEqual(res, 19)
def testZeroScore(self):
file = "test/metrics/ncss/Empty.java"
ast = AST.build_from_javalang(build_ast(file))
metric = NCSSMetric()
res = metric.value(ast)
self.assertEqual(res, 0)
def testFinallyBlock(self):
file = 'test/metrics/ncss/FinallyBlock.java'
metric = NCSSMetric()
res = metric.value(file)
self.assertEqual(res, 7)
def testChainedIfElseWithTrailingElse(self):
file = 'test/metrics/ncss/ChainedIfElseWithTrailingElse.java'
metric = NCSSMetric()
res = metric.value(file)
self.assertEqual(res, 12)
def testSimpleExample2(self):
file = 'test/metrics/ncss/SimpleExample2.java'
metric = NCSSMetric()
res = metric.value(file)
self.assertEqual(res, 19)