diff --git a/test/ts_files/class.ts b/test/ts_files/class.ts
new file mode 100644
index 0000000000..cad1efd5f6
--- /dev/null
+++ b/test/ts_files/class.ts
@@ -0,0 +1,15 @@
+import { add, hello } from './basic'
+
+export default class Foo {
+    static bar = 1;
+
+    static bar2 = 'bar';
+
+    foo1(...args) {
+        return add(...args)
+    }
+
+    foo2() {
+        return hello()
+    }
+}
\ No newline at end of file
diff --git a/test/ts_files/wrong_syntax1.1.ts b/test/ts_files/wrong_syntax1.1.ts
new file mode 100644
index 0000000000..6fbe79a828
--- /dev/null
+++ b/test/ts_files/wrong_syntax1.1.ts
@@ -0,0 +1,5 @@
+// #!/usr/bin/fibjs env
+
+exp ort function add(a: number, b: number) {
+    return a + b
+}
diff --git a/test/ts_files/wrong_syntax1.2.ts b/test/ts_files/wrong_syntax1.2.ts
new file mode 100644
index 0000000000..a3c6875eb4
--- /dev/null
+++ b/test/ts_files/wrong_syntax1.2.ts
@@ -0,0 +1,5 @@
+// #!/usr/bin/fibjs env
+
+export fun ction add(a: number, b: number) {
+    return a + b
+}
diff --git a/test/ts_files/wrong_syntax1.3.ts b/test/ts_files/wrong_syntax1.3.ts
new file mode 100644
index 0000000000..5e60dae8ac
--- /dev/null
+++ b/test/ts_files/wrong_syntax1.3.ts
@@ -0,0 +1,5 @@
+// #!/usr/bin/fibjs env
+
+export function ad d(a: number, b: number) {
+    return a + b
+}
diff --git a/test/ts_files/wrong_syntax1.4.ts b/test/ts_files/wrong_syntax1.4.ts
new file mode 100644
index 0000000000..fc58b0fdd6
--- /dev/null
+++ b/test/ts_files/wrong_syntax1.4.ts
@@ -0,0 +1,9 @@
+// #!/usr/bin/fibjs env
+
+export function add(a: number, b: number) {
+    return a + b
+}
+
+export function ht tp() {
+    return 'http'
+}
diff --git a/test/ts_files/wrong_syntax2.ts b/test/ts_files/wrong_syntax2.ts
new file mode 100644
index 0000000000..2253b9d635
--- /dev/null
+++ b/test/ts_files/wrong_syntax2.ts
@@ -0,0 +1,9 @@
+// #!/usr/bin/fibjs env
+
+export function add(a: number, b: number) {
+    return a + b
+}
+
+export function add() {
+    return 'psudo add'
+}
diff --git a/test/ts_test.js b/test/ts_test.js
index bda76c3efe..4c84d8367e 100644
--- a/test/ts_test.js
+++ b/test/ts_test.js
@@ -46,7 +46,10 @@ describe('typescript', () => {
         export function hello () {
             return 'hello, world'
         }
-        `, _getOptions())
+        `, _getOptions({
+                inlineSourceMap: true,
+                alwaysStrict: true
+            }))
         assert.isString(compiledJScript)
 
         const sbox = new vm.SandBox({})
@@ -62,7 +65,7 @@ describe('typescript', () => {
         assertBasicModule(basic)
     })
 
-    it('sandbox increasing test', () => {
+    it('increasing/parallel sandbox', () => {
         const iterbase = Array(5).fill(undefined);
 
         function testBody() {
@@ -76,6 +79,39 @@ describe('typescript', () => {
         iterbase.forEach(() => testBody());
         coroutine.parallel(iterbase, () => testBody());
     })
+
+    it('wrong syntax', () => {
+        assert.throws(() => {
+            const wrongSynTaxt = require('./ts_files/wrong_syntax1.1');
+        })
+        assert.throws(() => {
+            const wrongSynTaxt = require('./ts_files/wrong_syntax1.2');
+        })
+        assert.throws(() => {
+            const wrongSynTaxt = require('./ts_files/wrong_syntax1.3');
+        })
+        assert.throws(() => {
+            const wrongSynTaxt = require('./ts_files/wrong_syntax1.4');
+        })
+        const wrongSynTaxt2 = require('./ts_files/wrong_syntax2');
+        assert.isFunction(wrongSynTaxt2.add)
+        assert.equal(Object.keys(wrongSynTaxt2).length, 1)
+        assert.equal(wrongSynTaxt2.add(), 'psudo add')
+    })
+
+    it('class', () => {
+        const _class = require('./ts_files/class').default
+        const basic = require('./ts_files/basic')
+
+        assert.exist(_class.bar);
+        assert.exist(_class.bar2);
+
+        const ins = new _class()
+        assert.exist(ins);
+
+        assert.equal(ins.foo1(1, 2), basic.add(1, 2))
+        assert.equal(ins.foo2(), basic.hello())
+    })
 });
 
 require.main === module && test.run(console.DEBUG);
diff --git a/test/ts_test.ts b/test/ts_test.ts
index 6197c105df..62b01f551a 100644
--- a/test/ts_test.ts
+++ b/test/ts_test.ts
@@ -2,6 +2,7 @@
 // / <reference path="fib-types/declare/_test_env.d.ts" />
 
 import * as test from "test";
+import _class from './ts_files/class';
 test.setup();
 
 describe('typescript', () => {
@@ -22,6 +23,25 @@ describe('typescript', () => {
         const basic = require('./ts_files/basic')
         assertBasicModule(basic)
     })
+
+    it('class', () => {
+        const basic = require('./ts_files/basic')
+        assert.throws(() => {
+            // not exist
+            const _classModule = require('./ts_files/_class')
+        })
+        const _classModule = require('./ts_files/class')
+        assert.exist(_class, _classModule.default)
+
+        assert.exist(_class.bar);
+        assert.exist(_class.bar2);
+
+        const ins = new _class()
+        assert.exist(ins);
+
+        assert.equal(ins.foo1(1, 2), basic.add(1, 2))
+        assert.equal(ins.foo2(), basic.hello())
+    })
 });
 
 require.main === module && test.run(console.DEBUG);