diff --git a/configs/configupgrade/test-fixtures/valid/argument-commas/input/argument-commas.tf b/configs/configupgrade/test-fixtures/valid/argument-commas/input/argument-commas.tf
new file mode 100644
index 000000000..9c15a6fdb
--- /dev/null
+++ b/configs/configupgrade/test-fixtures/valid/argument-commas/input/argument-commas.tf
@@ -0,0 +1,7 @@
+locals {
+  foo = "bar", baz = "boop"
+}
+
+resource "test_instance" "foo" {
+  image = "b", type = "d"
+}
diff --git a/configs/configupgrade/test-fixtures/valid/argument-commas/want/argument-commas.tf b/configs/configupgrade/test-fixtures/valid/argument-commas/want/argument-commas.tf
new file mode 100644
index 000000000..c0a514e1c
--- /dev/null
+++ b/configs/configupgrade/test-fixtures/valid/argument-commas/want/argument-commas.tf
@@ -0,0 +1,9 @@
+locals {
+  foo = "bar"
+  baz = "boop"
+}
+
+resource "test_instance" "foo" {
+  image = "b"
+  type  = "d"
+}
diff --git a/configs/configupgrade/test-fixtures/valid/argument-commas/want/versions.tf b/configs/configupgrade/test-fixtures/valid/argument-commas/want/versions.tf
new file mode 100644
index 000000000..d9b6f790b
--- /dev/null
+++ b/configs/configupgrade/test-fixtures/valid/argument-commas/want/versions.tf
@@ -0,0 +1,3 @@
+terraform {
+  required_version = ">= 0.12"
+}