Fix complexity rate NaN

xcatliu · Dec 5, 2017 · 7f62d65 · 7f62d65
1 parent 550a260
commit 7f62d65
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Showing 3 changed files with 20 additions and 43 deletions.
diff --git a/src/ComplexityChecker/index.js b/src/ComplexityChecker/index.js
@@ -34,7 +34,10 @@ class ComplexityChecker extends BaseChecker {
             return false;
         });
 
-        let percentage = numberOfHighComplexityFunctions / numberOfFunctions * 100;
+        let percentage = 0;
+        if (numberOfFunctions > 0) {
+            percentage = numberOfHighComplexityFunctions / numberOfFunctions * 100;
+        }
         percentage = percentage.toFixed(2);
 
         const result = {

diff --git a/test/integration/checkReportEmptyOutputs.test.js b/test/integration/checkReportEmptyOutputs.test.js
diff --git a/test/integration/checkWithEmptyOutputs.test.js b/test/integration/checkWithEmptyOutputs.test.js
@@ -0,0 +1,16 @@
+const assert = require('chai').assert;
+
+const CodeQualityChecker = require('../../');
+const codeQualityChecker = new CodeQualityChecker();
+
+describe('Check with empty input', () => {
+    const cqcResult = codeQualityChecker.check([
+        'test/sample/not-exist-path.js'
+    ]);
+    it('should have correct result', () => {
+        assert.equal(cqcResult.base.numberOfFiles, 0);
+        assert.equal(cqcResult.sloc.source, 0);
+        assert.equal(cqcResult.jscpd.percentage, '0.00');
+        assert.equal(cqcResult.complexity.percentage, '0.00');
+    });
+});