diff --git a/test/JavaScriptObfuscator.spec.ts b/test/JavaScriptObfuscator.spec.ts
new file mode 100644
index 00000000..30bc1929
--- /dev/null
+++ b/test/JavaScriptObfuscator.spec.ts
@@ -0,0 +1,30 @@
+import { JavaScriptObfuscator } from "../src/JavaScriptObfuscator";
+
+import { DEFAULT_PRESET } from "../src/preset-options/DefaultPreset";
+import { NO_CUSTOM_NODES_PRESET } from "../src/preset-options/NoCustomNodesPreset";
+
+let assert: any = require('chai').assert;
+
+describe('JavaScriptObfuscator', () => {
+    describe('obfuscate (sourceCode: string, customOptions?: IOptionsPreset): string', () => {
+        let code: string;
+
+        it('should obfuscate simple code with variable inside global scope', () => {
+            code = `var test = 1;`;
+
+            assert.match(
+                JavaScriptObfuscator.obfuscate(code, Object.assign({}, DEFAULT_PRESET, NO_CUSTOM_NODES_PRESET)),
+                /^var *[A-Za-z]+ *= *0x\d+;$/
+            );
+        });
+
+        it('should obfuscate simple code with variable inside block-scope', () => {
+            code = `(function () {var test = 1;})()`;
+
+            assert.match(
+                JavaScriptObfuscator.obfuscate(code, Object.assign({}, DEFAULT_PRESET, NO_CUSTOM_NODES_PRESET)),
+                /^\(function *\( *\) *\{ *var *_0x[\w]+ *= *0x\d+; *\} *(\( *\) *\)|\) *\( *\));?$/
+            );
+        });
+    });
+});
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