1 files changed, 16 insertions, 0 deletions
diff --git a/tests/stdlib/tstrformatMissingFormatValue.nim b/tests/stdlib/tstrformatMissingFormatValue.nim
new file mode 100644
index 000000000..66c1c8772
--- /dev/null
+++ b/tests/stdlib/tstrformatMissingFormatValue.nim
@@ -0,0 +1,16 @@
+discard """
+errormsg: '''type mismatch: got <string, Obj, string>'''
+nimout: '''proc formatValue'''
+"""
+
+# This test is here to make sure that there is a clean error that
+# that indicates ``formatValue`` needs to be overloaded with the custom type.
+
+import strformat
+
+type Obj = object
+
+proc `$`(o: Obj): string = "foobar"
+
+var o: Obj
+doAssert fmt"{o}" == "foobar"