identity/alias.go

@@ -5,7 +5,7 @@ import (
 )
 
 const (
-	aliasRegex   = `^[a-zA-Z0-9]+$`
+	aliasRegex = `^[a-zA-Z0-9]+(\.[a-zA-Z0.9]+)*$`
 )
 
 // IsValidAlias checks if the alias is a valid alias format

identity/alias_test.go

@@ -0,0 +1,41 @@
+package identity
+
+import (
+	"testing"
+)
+
+func TestAliasesRegext(t *testing.T) {
+	tests := []struct {
+		alias   string
+		isValid bool
+	}{
+		{
+			alias:   "foobar",
+			isValid: true,
+		},
+		{
+			alias:   "foo.sarafu.local",
+			isValid: true,
+		},
+		{
+			alias:   "foo.sarafu",
+			isValid: true,
+		},
+		{
+			alias:   "foo.",
+			isValid: false,
+		},
+		{
+			alias:   ".foo..bar",
+			isValid: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.alias, func(t *testing.T) {
+			isValid := IsValidAlias(tt.alias)
+			if isValid != tt.isValid {
+				t.Fatalf("expected %v, got %v", tt.isValid, isValid)
+			}
+		})
+	}
+}