config: happy case test for multiple providers

config/config_test.go

@@ -210,6 +210,13 @@ func TestConfigValidate_providerMulti(t *testing.T) {
 	}
 }
 
+func TestConfigValidate_providerMultiGood(t *testing.T) {
+	c := testConfig(t, "validate-provider-multi-good")
+	if err := c.Validate(); err != nil {
+		t.Fatalf("should be valid: %s", err)
+	}
+}
+
 func TestConfigValidate_provConnSplatOther(t *testing.T) {
 	c := testConfig(t, "validate-prov-conn-splat-other")
 	if err := c.Validate(); err != nil {

config/test-fixtures/validate-provider-multi-good/main.tf

@@ -0,0 +1,7 @@
+provider "aws" {
+    alias = "bar"
+}
+
+provider "aws" {
+    alias = "foo"
+}