fix(javascript): do not apply test call formatting to arrow without body

src/language-js/printer-estree.js

@@ -6200,8 +6200,10 @@ function isTestCall(n, parent) {
         return false;
       }
       return (
-        (isFunctionOrArrowExpression(n.arguments[1]) &&
-          n.arguments[1].params.length <= 1) ||
+        (n.arguments.length === 2
+          ? isFunctionOrArrowExpression(n.arguments[1])
+          : isFunctionOrArrowExpressionWithBody(n.arguments[1]) &&
+            n.arguments[1].params.length <= 1) ||
         isAngularTestWrapper(n.arguments[1])
       );
     }
@@ -6245,6 +6247,14 @@ function isFunctionOrArrowExpression(node) {
   );
 }
 
+function isFunctionOrArrowExpressionWithBody(node) {
+  return (
+    node.type === "FunctionExpression" ||
+    (node.type === "ArrowFunctionExpression" &&
+      node.body.type === "BlockStatement")
+  );
+}
+
 function isUnitTestSetUp(n) {
   const unitTestSetUpRe = /^(before|after)(Each|All)$/;
   return (

tests/test_declarations/__snapshots__/jsfmt.spec.js.snap

@@ -167,6 +167,8 @@ it("does something really long and complicated so I have to write a very long na
   // code
 }));
 
+it("does something really long and complicated so I have to write a very long name for the test", fakeAsync(() => new SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS));
+
 /*
 * isTestCall(parent) should only be called when parent exists
 * and parent.type is CallExpression. This test makes sure that
@@ -190,6 +192,9 @@ it("does something really long and complicated so I have to write a very long na
   // code
 }));
 
+it("does something really long and complicated so I have to write a very long name for the test", fakeAsync(() =>
+  new SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS()));
+
 /*
  * isTestCall(parent) should only be called when parent exists
  * and parent.type is CallExpression. This test makes sure that
@@ -218,6 +223,8 @@ it("does something really long and complicated so I have to write a very long na
   // code
 }));
 
+it("does something really long and complicated so I have to write a very long name for the test", fakeAsync(() => new SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS));
+
 /*
 * isTestCall(parent) should only be called when parent exists
 * and parent.type is CallExpression. This test makes sure that
@@ -241,6 +248,9 @@ it("does something really long and complicated so I have to write a very long na
   // code
 }));
 
+it("does something really long and complicated so I have to write a very long name for the test", fakeAsync(() =>
+  new SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS()));
+
 /*
  * isTestCall(parent) should only be called when parent exists
  * and parent.type is CallExpression. This test makes sure that
@@ -692,6 +702,17 @@ it(\`handles
 it("does something quick", () => {
   console.log("hello!")
 }, 1000000000)
+
+it(
+  'succeeds if the test finishes in time',
+  () => new Promise(resolve => setTimeout(resolve, 10))
+);
+
+it(
+  'succeeds if the test finishes in time',
+  () => new Promise(resolve => setTimeout(resolve, 10)),
+  250
+);
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 // Shouldn't break
 
@@ -826,6 +847,15 @@ it("does something quick", () => {
   console.log("hello!");
 }, 1000000000);
 
+it("succeeds if the test finishes in time", () =>
+  new Promise(resolve => setTimeout(resolve, 10)));
+
+it(
+  "succeeds if the test finishes in time",
+  () => new Promise(resolve => setTimeout(resolve, 10)),
+  250
+);
+
 `;
 
 exports[`test_declarations.js - flow-verify 2`] = `
@@ -948,6 +978,17 @@ it(\`handles
 it("does something quick", () => {
   console.log("hello!")
 }, 1000000000)
+
+it(
+  'succeeds if the test finishes in time',
+  () => new Promise(resolve => setTimeout(resolve, 10))
+);
+
+it(
+  'succeeds if the test finishes in time',
+  () => new Promise(resolve => setTimeout(resolve, 10)),
+  250
+);
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 // Shouldn't break
 
@@ -1082,4 +1123,13 @@ it("does something quick", () => {
   console.log("hello!");
 }, 1000000000);
 
+it("succeeds if the test finishes in time", () =>
+  new Promise((resolve) => setTimeout(resolve, 10)));
+
+it(
+  "succeeds if the test finishes in time",
+  () => new Promise((resolve) => setTimeout(resolve, 10)),
+  250
+);
+
 `;

tests/test_declarations/angular_fakeAsync.js

@@ -14,6 +14,8 @@ it("does something really long and complicated so I have to write a very long na
   // code
 }));
 
+it("does something really long and complicated so I have to write a very long name for the test", fakeAsync(() => new SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS));
+
 /*
 * isTestCall(parent) should only be called when parent exists
 * and parent.type is CallExpression. This test makes sure that

tests/test_declarations/test_declarations.js

@@ -117,3 +117,14 @@ it(`handles
 it("does something quick", () => {
   console.log("hello!")
 }, 1000000000)
+
+it(
+  'succeeds if the test finishes in time',
+  () => new Promise(resolve => setTimeout(resolve, 10))
+);
+
+it(
+  'succeeds if the test finishes in time',
+  () => new Promise(resolve => setTimeout(resolve, 10)),
+  250
+);