Add valid-expect-in-promise rule

playwright-community · Feb 27, 2024 · f0568d3 · f0568d3
1 parent f8fc5d9
commit f0568d3
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Showing 4 changed files with 51 additions and 58 deletions.
diff --git a/src/index.ts b/src/index.ts
@@ -41,6 +41,7 @@ import requireHook from './rules/require-hook';
 import requireSoftAssertions from './rules/require-soft-assertions';
 import requireTopLevelDescribe from './rules/require-top-level-describe';
 import validExpect from './rules/valid-expect';
+import validExpectInPromise from './rules/valid-expect-in-promise';
 import validTitle from './rules/valid-title';
 
 const index = {
@@ -88,6 +89,7 @@ const index = {
     'require-soft-assertions': requireSoftAssertions,
     'require-top-level-describe': requireTopLevelDescribe,
     'valid-expect': validExpect,
+    'valid-expect-in-promise': validExpectInPromise,
     'valid-title': validTitle,
   },
 };
@@ -116,6 +118,7 @@ const sharedConfig = {
     'playwright/no-wait-for-timeout': 'warn',
     'playwright/prefer-web-first-assertions': 'error',
     'playwright/valid-expect': 'error',
+    'playwright/valid-expect-in-promise': 'error',
     'playwright/valid-title': 'error',
   },
 };

diff --git a/src/rules/valid-expect-in-promise.test.ts b/src/rules/valid-expect-in-promise.test.ts
@@ -99,18 +99,6 @@ runRuleTester('valid-expect-in-promise', rule, {
         { column: 3, endColumn: 5, messageId: 'expectInFloatingPromise' },
       ],
     },
-    {
-      code: dedent`
-        xtest('foo', function() {
-          somePromise.catch(function() {
-            expect(someThing).toEqual(true)
-          })
-        })
-      `,
-      errors: [
-        { column: 3, endColumn: 5, messageId: 'expectInFloatingPromise' },
-      ],
-    },
     {
       code: dedent`
         test('foo', function() {
@@ -335,20 +323,7 @@ runRuleTester('valid-expect-in-promise', rule, {
     },
     {
       code: dedent`
-        ftest('foo', () => {
-          somePromise.then(() => {
-            doSomeOperation();
-            expect(someThing).toEqual(true);
-          })
-        });
-      `,
-      errors: [
-        { column: 3, endColumn: 5, messageId: 'expectInFloatingPromise' },
-      ],
-    },
-    {
-      code: dedent`
-        it.skip('foo', () => {
+        test.skip('foo', () => {
           somePromise.then(() => {
             doSomeOperation();
             expect(someThing).toEqual(true);
@@ -565,7 +540,7 @@ runRuleTester('valid-expect-in-promise', rule, {
     },
     {
       code: dedent`
-        import { test } from '@jest/globals';
+        import { test } from '@playwright/test';
 
         test('later return', async () => {
           const x = 1, promise = something().then(value => {
@@ -765,28 +740,29 @@ runRuleTester('valid-expect-in-promise', rule, {
         },
       ],
     },
-    {
-      code: dedent`
-        import { it as promiseThatThis } from '@jest/globals';
-
-        promiseThatThis('is valid', async () => {
-          const promise = loadNumber().then(number => {
-            expect(typeof number).toBe('number');
-
-            return number + 1;
-          });
-
-          expect(anotherPromise).resolves.toBe(1);
-        });
-      `,
-      errors: [
-        {
-          column: 9,
-          line: 4,
-          messageId: 'expectInFloatingPromise',
-        },
-      ],
-    },
+    // TODO:
+    // {
+    //   code: dedent`
+    //     import { test as promiseThatThis } from '@playwright/test';
+    //
+    //     promiseThatThis('is valid', async () => {
+    //       const promise = loadNumber().then(number => {
+    //         expect(typeof number).toBe('number');
+    //
+    //         return number + 1;
+    //       });
+    //
+    //       expect(anotherPromise).resolves.toBe(1);
+    //     });
+    //   `,
+    //   errors: [
+    //     {
+    //       column: 9,
+    //       line: 4,
+    //       messageId: 'expectInFloatingPromise',
+    //     },
+    //   ],
+    // },
     // Global aliases
     {
       code: dedent`
@@ -1096,13 +1072,6 @@ runRuleTester('valid-expect-in-promise', rule, {
         });
       });
     `,
-    dedent`
-      xtest('foo', function() {
-        return somePromise.catch(function() {
-          expect(someThing).toEqual(true);
-        });
-      });
-    `,
     dedent`
       test('foo', function() {
         return somePromise.then(function() {

diff --git a/src/rules/valid-expect-in-promise.ts b/src/rules/valid-expect-in-promise.ts
@@ -1,6 +1,7 @@
 import { Rule } from 'eslint';
 import * as ESTree from 'estree';
 import {
+  getNodeName,
   getParent,
   getStringValue,
   isFunction,
@@ -14,8 +15,6 @@ import {
 } from '../utils/parseFnCall';
 import { KnownCallExpression } from '../utils/types';
 
-const getNodeName = getStringValue;
-
 const isPromiseChainCall = (node: ESTree.Node): node is KnownCallExpression => {
   if (
     node.type === 'CallExpression' &&

diff --git a/src/utils/ast.ts b/src/utils/ast.ts
@@ -1,5 +1,6 @@
 import { Rule } from 'eslint';
 import ESTree from 'estree';
+import { isSupportedAccessor } from './parseFnCall';
 import { NodeWithParent, TypedNodeWithParent } from './types';
 
 export function getStringValue(node: ESTree.Node | undefined) {
@@ -126,3 +127,24 @@ export function isFunction(
 }
 
 export const equalityMatchers = new Set(['toBe', 'toEqual', 'toStrictEqual']);
+
+const joinNames = (a: string | null, b: string | null): string | null =>
+  a && b ? `${a}.${b}` : null;
+
+export function getNodeName(node: ESTree.Node): string | null {
+  if (isSupportedAccessor(node)) {
+    return getStringValue(node);
+  }
+
+  switch (node.type) {
+    case 'TaggedTemplateExpression':
+      return getNodeName(node.tag);
+    case 'MemberExpression':
+      return joinNames(getNodeName(node.object), getNodeName(node.property));
+    case 'NewExpression':
+    case 'CallExpression':
+      return getNodeName(node.callee);
+  }
+
+  return null;
+}