diff --git a/README.md b/README.md
index 62e7160..f2279b1 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,3 @@
 # test
 test repository
-[![DeepScan grade](https://stage.deepscan.io/api/teams/6494/projects/23671/branches/721392/badge/grade.svg)](https://stage.deepscan.io/dashboard#view=project&tid=6494&pid=23671&bid=721392)
+[![DeepScan grade](https://deepscan.io/api/teams/20255/projects/25078/branches/777497/badge/grade.svg)](https://deepscan.io/dashboard#view=project&tid=20255&pid=25078&bid=777497)
diff --git a/src/js/code-quality.js b/src/js/code-quality.js
index faa0b88..87fa9f1 100644
--- a/src/js/code-quality.js
+++ b/src/js/code-quality.js
@@ -193,17 +193,3 @@ function foo(url) {
     var target = url + "user" + user; // UNUSED_VAR_ASSIGN alarm
     target = url.replace(/\.|\?|\&|\/|\=|\:|\-|\s/gi, "");
 }
-
-import React from 'react';
-import PropTypes from 'prop-types';
-
-class Hello extends React.Component {
-    render() {
-        return <div>Hello, {this.props.name}</div>;
-    }
-}
-
-Hello.propTypes = {
-    name: PropTypes.string,
-    age: PropTypes.number // USELESS_PROP_TYPES alarm because this property 'age' is not used.
-};
diff --git a/src/js/react-rules.js b/src/js/react-rules.js
index c25ecb9..bdb25dd 100644
--- a/src/js/react-rules.js
+++ b/src/js/react-rules.js
@@ -214,3 +214,14 @@ Hello.propTypes = {
     name: PropTypes.string,
     age: PropTypes.number // USELESS_PROP_TYPES alarm because this property 'age' is not used.
 };
+
+export class Hello extends React.Component {
+    render() {
+        return (
+            <div>
+                /* This is a comment */ {/* JSX_BAD_COMMENT alarm because this text is recognized as a JSX child instead of a comment. */}
+                <div>// is a double slash.</div> {/* JSX_BAD_COMMENT alarm because this text in div element is recognized as a JSX child instead of a comment. */}
+            </div>
+        );
+    }
+}
diff --git a/src/js/test.js b/src/js/test.js
new file mode 100644
index 0000000..4e878a8
--- /dev/null
+++ b/src/js/test.js
@@ -0,0 +1,15 @@
+
+class Test {
+    data = 'data';
+    foo() {
+        console.log(this.data);
+    }
+    bar() {
+        this.foo.call(this); // USELESS_CALL alarm
+    }
+}
+function a() { return 1; } // DUPLICATE_DECL alarm. This function declaration is ignored.
+function a(b) { return b; }
+
+var foo;
+var foo; // DUPLICATE_DECL alarm