Added case-insensitive comparison for permissions

Author: maximmasiutin

mysql/resource_grant_test.go

@@ -165,7 +165,7 @@ func TestAccDifferentHosts(t *testing.T) {
 	})
 }
 
-func TestRoleGrantsOnColumns(t *testing.T) {
+func TestGrantsOnColumnsWithUserDefaultRole(t *testing.T) {
 	dbName := fmt.Sprintf("tf-test-%d", rand.Intn(100))
 	userNameA := "jda"
 	userNameB := "jdb"
@@ -177,7 +177,9 @@ func TestRoleGrantsOnColumns(t *testing.T) {
 	resource.Test(t, resource.TestCase{
 		PreCheck: func() {
 			testAccPreCheckSkipRds(t)
-			testAccPreCheckSkipTiDB(t) // role grants are not supported by this version of MySQL
+			testAccPreCheckSkipMariaDB(t)                     // user-default roles are not supported on MariaDB when using the provider
+			testAccPreCheckSkipNotMySQLVersionMin(t, "8.0.0") // user-default roles are not supported on MariaDB when using the provider
+			testAccPreCheckSkipTiDB(t)                        // role grants are not supported by this version of MySQL
 		},
 		ProviderFactories: testAccProviderFactories,
 		CheckDestroy:      testAccGrantCheckDestroy,