adding context test for module multi-vars

terraform/context_test.go

@@ -2978,6 +2978,28 @@ func TestContextPlan_moduleInputFromVar(t *testing.T) {
 		t.Fatalf("bad:\n%s", actual)
 	}
 }
+func TestContextPlan_moduleMultiVar(t *testing.T) {
+	m := testModule(t, "plan-module-multi-var")
+	p := testProvider("aws")
+	p.DiffFn = testDiffFn
+	ctx := testContext(t, &ContextOpts{
+		Module: m,
+		Providers: map[string]ResourceProviderFactory{
+			"aws": testProviderFuncFixed(p),
+		},
+	})
+
+	plan, err := ctx.Plan(nil)
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	actual := strings.TrimSpace(plan.String())
+	expected := strings.TrimSpace(testTerraformPlanModuleMultiVarStr)
+	if actual != expected {
+		t.Fatalf("bad:\n%s", actual)
+	}
+}
 func TestContextPlan_moduleOrphans(t *testing.T) {
 	m := testModule(t, "plan-modules-remove")
 	p := testProvider("aws")

terraform/terraform_test.go

@@ -841,6 +841,25 @@ STATE:
 <no state>
 `
 
+const testTerraformPlanModuleMultiVarStr = `
+DIFF:
+
+module.child:
+  CREATE: aws_instance.bar.0
+    baz:  "" => "baz"
+    type: "" => "aws_instance"
+  CREATE: aws_instance.bar.1
+    baz:  "" => "baz"
+    type: "" => "aws_instance"
+  CREATE: aws_instance.foo
+    foo:  "" => "baz,baz"
+    type: "" => "aws_instance"
+
+STATE:
+
+<no state>
+`
+
 const testTerraformPlanModuleOrphansStr = `
 DIFF:
 

terraform/test-fixtures/plan-module-multi-var/child/main.tf

@@ -0,0 +1,8 @@
+resource "aws_instance" "bar" {
+  baz = "baz"
+  count = 2
+}
+
+resource "aws_instance" "foo" {
+  foo = "${join(",",aws_instance.bar.*.baz)}"
+}

terraform/test-fixtures/plan-module-multi-var/main.tf

@@ -0,0 +1,4 @@
+module "child" {
+    source = "./child"
+}
+