diff --git a/src/ComplexityChecker/index.js b/src/ComplexityChecker/index.js
index 942252d..3722227 100644
--- a/src/ComplexityChecker/index.js
+++ b/src/ComplexityChecker/index.js
@@ -71,7 +71,9 @@ class ComplexityChecker extends BaseChecker {
             return {
                 filepath: resolvedFilepath,
                 complexity: 0,
-                details: []
+                details: [],
+                numberOfFunctions: 0,
+                numberOfHighComplexityFunctions: 0
             };
         }
 
@@ -109,14 +111,6 @@ class ComplexityChecker extends BaseChecker {
         }
         return 0;
     }
-    getPercentage(count) {
-        let result = 0;
-        if (this.fileList.length > 0) {
-            result = count / this.fileList.length * 100;
-        }
-        result = result.toFixed(2);
-        return result;
-    }
 }
 
 module.exports = ComplexityChecker;
diff --git a/test/integration/checkUnsupportedFiletype.test.js b/test/integration/checkUnsupportedFiletype.test.js
new file mode 100644
index 0000000..428489f
--- /dev/null
+++ b/test/integration/checkUnsupportedFiletype.test.js
@@ -0,0 +1,16 @@
+const assert = require('chai').assert;
+
+const CodeQualityChecker = require('../../');
+const codeQualityChecker = new CodeQualityChecker();
+
+describe('Check unsupported filetype', () => {
+    const cqcResult = codeQualityChecker.check([
+        'test/sample/hello.java'
+    ]);
+    it('should have correct result', () => {
+        assert.equal(cqcResult.base.numberOfFiles, 1);
+        assert.equal(cqcResult.sloc.source, 5);
+        assert.equal(cqcResult.jscpd.percentage, '0.00');
+        assert.equal(cqcResult.complexity.percentage, '0.00');
+    });
+});
diff --git a/test/sample/hello.java b/test/sample/hello.java
new file mode 100644
index 0000000..6634e98
--- /dev/null
+++ b/test/sample/hello.java
@@ -0,0 +1,8 @@
+public class HelloWorld {
+
+    public static void main(String[] args) {
+        // Prints "Hello, World" to the terminal window.
+        System.out.println("Hello, World");
+    }
+
+}
\ No newline at end of file