fix: show diff for errors that contain actual/expected without showDi…

…ff (#1966)
vitest-dev · Sep 4, 2022 · c8afc01 · c8afc01
1 parent aa7eb7d
commit c8afc01
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/packages/vitest/src/node/error.ts b/packages/vitest/src/node/error.ts
@@ -69,7 +69,8 @@ export async function printError(error: unknown, ctx: Vitest, options: PrintErro
 
   handleImportOutsideModuleError(e.stack || e.stackStr || '', ctx)
 
-  if (e.showDiff) {
+  // Eg. AssertionError from assert does not set showDiff but has both actual and expected properties
+  if (e.showDiff || (e.showDiff === undefined && e.actual && e.expected)) {
     displayDiff(stringify(e.actual), stringify(e.expected), ctx.logger.console, {
       outputTruncateLength: ctx.config.outputTruncateLength,
       outputDiffLines: ctx.config.outputDiffLines,