add tests

typescript-eslint · Aug 8, 2019 · b906a23 · b906a23
1 parent 77b3b95
commit b906a23
Showing 1 changed file with 51 additions and 0 deletions.
diff --git a/packages/eslint-plugin/tests/rules/ban-types.test.ts b/packages/eslint-plugin/tests/rules/ban-types.test.ts
@@ -23,6 +23,25 @@ const options: InferOptionsTypeFromRule<typeof rule> = [
     },
   },
 ];
+
+const options2: InferOptionsTypeFromRule<typeof rule> = [
+  {
+    types: {
+      'null': {
+        message: 'Use undefined instead.',
+        fixWith: 'undefined',
+      },
+    },
+  },
+];
+
+const options3: InferOptionsTypeFromRule<typeof rule> = [
+  {
+    types: {
+      'undefined': null,
+    },
+  },
+];
 
 ruleTester.run('ban-types', rule, {
   valid: [
@@ -51,6 +70,14 @@ ruleTester.run('ban-types', rule, {
       code: 'let a: NS.Bad._',
       options,
     },
+    {
+      code: 'let a: undefined',
+      options: options2,
+    },
+    {
+      code: 'let a: null',
+      options: options3,
+    },
   ],
   invalid: [
     {
@@ -68,6 +95,30 @@ ruleTester.run('ban-types', rule, {
       ],
       options,
     },
+    {
+      code: 'let a: undefined;',
+      errors: [
+        {
+          messageId: 'bannedTypeMessage',
+          data: { name: 'undefined', customMessage: '' },
+          line: 1,
+          column: 8,
+        },
+      ],
+      options: options3,
+    },
+    {
+      code: 'let a: null;',
+      errors: [
+        {
+          messageId: 'bannedTypeMessage',
+          data: { name: 'null', customMessage: ' Use undefined instead.' },
+          line: 1,
+          column: 8,
+        },
+      ],
+      options: options2,
+    },
     {
       code: 'let aa: Foo;',
       errors: [