add another inspect test

command/inspect_test.go

@@ -37,6 +37,18 @@ local.fruit: "banana"
 
       <no post-processor>
 
+`},
+		{[]string{"inspect", "-var=fruit=peach", filepath.Join(testFixture("hcl"), "vars", "fruit_string.pkr.hcl")}, nil, `Packer Inspect: HCL2 mode
+
+> input-variables:
+
+var.fruit: "peach" [debug: {Type:cty.String,CmdValue:peach,VarfileValue:null,EnvValue:null,DefaultValue:banana}]
+
+> local-variables:
+
+
+> builds:
+
 `},
 	}
 

command/test-fixtures/hcl/vars/fruit_string.pkr.hcl

@@ -0,0 +1,5 @@
+
+variable "fruit" {
+  type = string
+  default = "banana"
+}