diff --git a/src/test/extension.test.ts b/src/test/extension.test.ts
index 5b568a0..4ca0ab4 100644
--- a/src/test/extension.test.ts
+++ b/src/test/extension.test.ts
@@ -5,36 +5,6 @@ import * as assert from 'assert';
 import * as vscode from 'vscode';
 // import * as myExtension from '../../extension';
 
-enum TextFormat {
-	/** 独立单词 */
-	SINGLE_WORD,
-	/** 小驼峰 */
-	CAMEL_CASE,
-	/** 大驼峰 */
-	PASCAL_CASE,
-	/** 大写 */
-	UPPER_CASE,
-	/** 小写 */
-	LOWER_CASE,
-}
-
-interface TestCase {
-	input: string
-	inputType: TextFormat | Array<TextFormat>
-	output: {
-		camelCase: string
-	}
-}
-const testCase: Array<TestCase> = [
-	{
-		input: '',
-		inputType: [],
-		output: {
-			camelCase: '',
-		}
-	},
-];
-
 suite('Extension Test Suite', () => {
 	vscode.window.showInformationMessage('Start all tests.');
 
diff --git a/src/test/test-case.ts b/src/test/test-case.ts
new file mode 100644
index 0000000..8e89f33
--- /dev/null
+++ b/src/test/test-case.ts
@@ -0,0 +1,128 @@
+
+
+enum SkipReason {
+    /** 空字符串 */
+    EMPTY_STRING,
+    /** 字符串过长 */
+    STRING_TOO_LONG,
+    /** 不包含英文字母 */
+    NOT_CONTAIN_LETTERS,
+}
+
+type TestSkipCase = {
+    /** 当 input 不是规范的输入时，isSkip 为 true */
+    isSkip: true
+    skipReason: SkipReason
+};
+type TestReplaceCase = {
+    isSkip: false
+    splitResult: Array<string>
+    output: {
+        camelCase: string
+        pascalCase: string
+    }
+};
+type TestCase = (TestSkipCase | TestReplaceCase) & {
+    input: string | Array<string>
+};
+
+/*
+Have a nice day!
+foo--bar
+foo -bar
+pineApple
+*/
+const testCase: Array<TestCase> = [
+    {
+        input:
+            ''
+        ,
+        isSkip: true,
+        skipReason: SkipReason.EMPTY_STRING
+    },
+    {
+        input:
+            `China's factory activity expanded in March after five consecutive months of contraction, an official survey revealed on Sunday, adding to a run of indicators that suggest the stabilization of the world's second-largest economy.`
+        ,
+        isSkip: true,
+        skipReason: SkipReason.STRING_TOO_LONG
+    },
+    {
+        input:
+            `今天是星期日`
+        ,
+        isSkip: true,
+        skipReason: SkipReason.NOT_CONTAIN_LETTERS
+    },
+    {
+        input: [
+            'test case',
+            'test_case',
+            'test-case',
+            'testCase',
+            'TestCase',
+            'TEST_CASE',
+        ],
+        isSkip: false,
+        splitResult: [
+            ''
+        ],
+        output: {
+            camelCase: 'testCase',
+            pascalCase: 'TestCase',
+        }
+    },
+    {
+        input: [
+            ' A nice day! ',
+            ' a_nice_day! ',
+            ' ANiceDay! ',
+            ' A_NICE_DAY! ',
+            ' A_Nice_DaY ',
+            ' A-NiCe_Day ',
+            ' A----NiCe_Day_-_-- ',
+        ],
+        isSkip: false,
+        splitResult: [
+            ''
+        ],
+        output: {
+            camelCase: ' aNiceDay! ',
+            pascalCase: ' ANiceDay! ',
+        }
+    },
+    {
+        input: [
+            ' A niCe-Day-',
+            ' A niceDay',
+        ],
+        isSkip: false,
+        splitResult: [
+            ''
+        ],
+        output: {
+            camelCase: ' a niceDay',
+            pascalCase: ' A NiceDay',
+        }
+    },
+    {
+        input: [
+            'Have a nice day!',
+            'have a nice day!',
+            'Have-a-nice-day!',
+            'have-a-nice-day!',
+            'HAVE-A-NICE-DAY!',
+            'Have_a_nice_day!',
+            'have_a_nice_day!',
+            'HAVE_A_NICE_DAY!',
+            'HaveANiceDay!',
+            'haveANiceDay!',
+        ],
+        isSkip: false,
+        splitResult: ['have', 'a', 'nice', 'day', '!'],
+        output: {
+            camelCase: ' a niceDay',
+            pascalCase: ' A NiceDay',
+        }
+    },
+];
diff --git a/test-code.md b/test-code.md
index a61397c..978d3fd 100644
--- a/test-code.md
+++ b/test-code.md
@@ -13,4 +13,6 @@ const HELLO_WORLD = ''
 const helloworld = ''
 // 大写
 const HELLOWORLD = ''
+// 加空格
+const a = 'hello world'
 ```
\ No newline at end of file