fix(valid-expect-in-promise): support deep property call chains

jest-community · Oct 11, 2021 · aa6e687 · aa6e687
1 parent f1e0ab3
commit aa6e687
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Showing 2 changed files with 62 additions and 13 deletions.
diff --git a/src/rules/__tests__/valid-expect-in-promise.test.ts b/src/rules/__tests__/valid-expect-in-promise.test.ts
@@ -34,6 +34,48 @@ ruleTester.run('valid-expect-in-promise', rule, {
           return number + 1;
         });
 
+        expect(await promise).resolves.toBeGreaterThan(1);
+      });
+    `,
+    dedent`
+      it('is valid', async () => {
+        const promise = loadNumber().then(number => {
+          expect(typeof number).toBe('number');
+
+          return number + 1;
+        });
+
+        expect(1).toBeGreaterThan(await promise);
+      });
+    `,
+    dedent`
+      it('is valid', async () => {
+        const promise = loadNumber().then(number => {
+          expect(typeof number).toBe('number');
+
+          return number + 1;
+        });
+
+        expect.this.that.is(await promise);
+      });
+    `,
+    dedent`
+      it('is valid', async () => {
+        expect(await loadNumber().then(number => {
+          expect(typeof number).toBe('number');
+
+          return number + 1;
+        })).toBeGreaterThan(1);
+      });
+    `,
+    dedent`
+      it('is valid', async () => {
+        const promise = loadNumber().then(number => {
+          expect(typeof number).toBe('number');
+
+          return number + 1;
+        });
+
         logValue(await promise);
       });
     `,

diff --git a/src/rules/valid-expect-in-promise.ts b/src/rules/valid-expect-in-promise.ts
@@ -147,22 +147,29 @@ const isPromiseMethodThatUsesValue = (
  */
 const isValueAwaitedInArguments = (
   name: string,
-  node: TSESTree.CallExpression,
+  call: TSESTree.CallExpression,
 ): boolean => {
-  for (const argument of node.arguments) {
-    if (
-      argument.type === AST_NODE_TYPES.AwaitExpression &&
-      isIdentifier(argument.argument, name)
-    ) {
-      return true;
+  let node: TSESTree.Node = call;
+
+  while (node) {
+    if (node.type === AST_NODE_TYPES.CallExpression) {
+      for (const argument of node.arguments) {
+        if (
+          argument.type === AST_NODE_TYPES.AwaitExpression &&
+          isIdentifier(argument.argument, name)
+        ) {
+          return true;
+        }
+      }
+
+      node = node.callee;
     }
-  }
 
-  if (
-    node.callee.type === AST_NODE_TYPES.MemberExpression &&
-    node.callee.object.type === AST_NODE_TYPES.CallExpression
-  ) {
-    return isValueAwaitedInArguments(name, node.callee.object);
+    if (node.type !== AST_NODE_TYPES.MemberExpression) {
+      break;
+    }
+
+    node = node.object;
   }
 
   return false;