config: tests for instantiating interpolated var types

config/config.go

@@ -52,7 +52,8 @@ type ResourceVariable struct {
 // that is inputted from outside the configuration. This looks like
 // "${var.foo}"
 type UserVariable struct {
-	name string
+	Name string
+
 	key  string
 }
 
@@ -74,7 +75,7 @@ func NewUserVariable(key string) (*UserVariable, error) {
 	name := key[len("var."):]
 	return &UserVariable{
 		key:  key,
-		name: name,
+		Name: name,
 	}, nil
 }
 

config/config_test.go

@@ -1,4 +1,43 @@
 package config
 
+import (
+	"testing"
+)
+
 // This is the directory where our test fixtures are.
 const fixtureDir = "./test-fixtures"
+
+func TestNewResourceVariable(t *testing.T) {
+	v, err := NewResourceVariable("foo.bar.baz")
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	if v.Type != "foo" {
+		t.Fatalf("bad: %#v", v)
+	}
+	if v.Name != "bar" {
+		t.Fatalf("bad: %#v", v)
+	}
+	if v.Field != "baz" {
+		t.Fatalf("bad: %#v", v)
+	}
+
+	if v.FullKey() != "foo.bar.baz" {
+		t.Fatalf("bad: %#v", v)
+	}
+}
+
+func TestNewUserVariable(t *testing.T) {
+	v, err := NewUserVariable("var.bar")
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	if v.Name != "bar" {
+		t.Fatalf("bad: %#v", v.Name)
+	}
+	if v.FullKey() != "var.bar" {
+		t.Fatalf("bad: %#v", v)
+	}
+}