test_runner: print failing assertion only once with spec reporter

Co-authored-by: Llorx <dallorx@gmail.com>
PR-URL: #56662
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: 2 people

lib/internal/test_runner/reporter/spec.js

@@ -52,7 +52,7 @@ class SpecReporter extends Transform {
       hasChildren = true;
     }
     const indentation = indent(data.nesting);
-    return `${formatTestReport(type, data, prefix, indentation, hasChildren)}\n`;
+    return `${formatTestReport(type, data, prefix, indentation, hasChildren, false)}\n`;
   }
   #handleEvent({ type, data }) {
     switch (type) {

lib/internal/test_runner/reporter/utils.js

@@ -59,7 +59,7 @@ function formatError(error, indent) {
   return `\n${indent}  ${message}\n`;
 }
 
-function formatTestReport(type, data, prefix = '', indent = '', hasChildren = false) {
+function formatTestReport(type, data, prefix = '', indent = '', hasChildren = false, showErrorDetails = true) {
   let color = reporterColorMap[type] ?? colors.white;
   let symbol = reporterUnicodeSymbolMap[type] ?? ' ';
   const { skip, todo } = data;
@@ -71,10 +71,12 @@ function formatTestReport(type, data, prefix = '', indent = '', hasChildren = fa
   } else if (todo !== undefined) {
     title += ` # ${typeof todo === 'string' && todo.length ? todo : 'TODO'}`;
   }
-  const error = formatError(data.details?.error, indent);
+
+  const error = showErrorDetails ? formatError(data.details?.error, indent) : '';
   const err = hasChildren ?
     (!error || data.details?.error?.failureType === 'subtestsFailed' ? '' : `\n${error}`) :
     error;
+
   if (skip !== undefined) {
     color = colors.gray;
     symbol = reporterUnicodeSymbolMap['hyphen:minus'];

test/fixtures/test-runner/output/assertion-color-tty.snapshot

@@ -1,16 +1,4 @@
 [31m✖ failing assertion [90m(*ms)[39m[39m
-  [AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
-  [32mactual[39m [31mexpected[39m
-  
-  [39m'[39m[32m![39m[39mH[39m[39me[39m[39ml[39m[39ml[39m[39mo[39m[39m [39m[39mW[39m[39mo[39m[39mr[39m[39ml[39m[39md[39m[31m![39m[39m'[39m
-  ] {
-    generatedMessage: [33mtrue[39m,
-    code: [32m'ERR_ASSERTION'[39m,
-    actual: [32m'!Hello World'[39m,
-    expected: [32m'Hello World!'[39m,
-    operator: [32m'strictEqual'[39m
-  }
-
 [34mℹ tests 1[39m
 [34mℹ suites 0[39m
 [34mℹ pass 0[39m

test/fixtures/test-runner/output/default_output.snapshot

@@ -1,32 +1,9 @@
 [32m✔ should pass [90m(*ms)[39m[39m
 [31m✖ should fail [90m(*ms)[39m[39m
-  Error: fail
-      *[39m
-  *[39m
-  *[39m
-  *[39m
-  *[39m
-  *[39m
-  *[39m
-
 [90m﹣ should skip [90m(*ms)[39m # SKIP[39m
 ▶ parent
   [31m✖ should fail [90m(*ms)[39m[39m
-    Error: fail
-        *[39m
-    *[39m
-    *[39m
-    *[39m
-    *[39m
-        *[39m
-    *[39m
-    *[39m
-    *[39m
-    *[39m
-
   [31m✖ should pass but parent fail [90m(*ms)[39m[39m
-    [32m'test did not finish before its parent and was cancelled'[39m
-
 [31m✖ parent [90m(*ms)[39m[39m
 [34mℹ tests 6[39m
 [34mℹ suites 0[39m

test/fixtures/test-runner/output/eval_spec.snapshot

@@ -1,14 +1,5 @@
 ✔ passes (*ms)
 ✖ fails (*ms)
-  Error: fail
-      *
-      *
-      *
-      *
-      *
-      *
-      *
-
 ℹ tests 2
 ℹ suites 0
 ℹ pass 1