From c16ca6390aa5175a3790629435b21c0c0358c952 Mon Sep 17 00:00:00 2001
From: Albert Meltzer <7529386+kitbellew@users.noreply.github.com>
Date: Wed, 12 Jul 2023 11:50:41 -0700
Subject: [PATCH] FormatAssertions: fail when parsing errors out

---
 .../test/scala/org/scalafmt/util/FormatAssertions.scala  | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/scalafmt-tests/src/test/scala/org/scalafmt/util/FormatAssertions.scala b/scalafmt-tests/src/test/scala/org/scalafmt/util/FormatAssertions.scala
index 24610425e0..72cb850878 100644
--- a/scalafmt-tests/src/test/scala/org/scalafmt/util/FormatAssertions.scala
+++ b/scalafmt-tests/src/test/scala/org/scalafmt/util/FormatAssertions.scala
@@ -11,6 +11,7 @@ import org.scalameta.logger
 import scala.meta.parsers.{Parse, ParseException}
 import scala.meta.testkit.StructurallyEqual
 import scala.meta.{Dialect, Tree}
+import scala.meta.internal.inputs._
 
 trait FormatAssertions {
 
@@ -33,9 +34,11 @@ trait FormatAssertions {
     import scala.meta._
     def toInput(code: String) = Scalafmt.toInput(code, filename)
     toInput(original).parse[T] match {
-      case Parsed.Error(_, message, _) =>
-        logger.debug(original)
-        logger.debug(s"original does not parse $message")
+      case Parsed.Error(pos, message, _) =>
+        val msgWithPos = pos.formatMessage("error", message)
+        val error = s"original does not parse ($msgWithPos) [$filename]"
+        logger.debug(error)
+        throw FormatterOutputDoesNotParse(error, pos.startLine)
       case Parsed.Success(originalParsed) =>
         toInput(obtained).parse[T] match {
           case Parsed.Success(obtainedParsed) =>