add broken parser case

Author: zth

analysis/tests/src/BrokenParserCases.res

@@ -3,3 +3,7 @@
 // let _ = someFn(~isOff=, ())
 //                       ^com
 
+// This should parse as a single item tuple when in a pattern?
+// switch s { | (t) }
+//                ^com
+

analysis/tests/src/expected/BrokenParserCases.res.txt

@@ -4,3 +4,10 @@ Pexp_apply ...[2:11->2:17] (~isOff2:19->2:24=...[2:27->2:29])
 Completable: Cargument Value[someFn]($0)
 []
 
+Complete src/BrokenParserCases.res 6:18
+looking for: Cpath Value[s] 
+posCursor:[6:18] posNoWhite:[6:17] Found expr:[6:3->6:21]
+posCursor:[6:18] posNoWhite:[6:17] Found pattern:[6:16->6:19]
+Completable: Cpattern Value[s]=t
+[]
+