feat(auth): add user profile, phone login, and account deletion

backend/internal/auth/identifiers_test.go

@@ -0,0 +1,63 @@
+package auth
+
+import "testing"
+
+func TestNormalizePhone(t *testing.T) {
+	valid := []string{
+		"+15551234567",
+		"+442071234567",
+		"+12345678",
+		"+123456789012345",
+	}
+	for _, in := range valid {
+		got, err := NormalizePhone(in)
+		if err != nil {
+			t.Errorf("NormalizePhone(%q) error: %v", in, err)
+		}
+		if got != in {
+			t.Errorf("NormalizePhone(%q) = %q, want unchanged", in, got)
+		}
+	}
+
+	invalid := []string{
+		"",
+		"15551234567",
+		"+",
+		"+1234567",
+		"+1234567890123456",
+		"+1555abc4567",
+		"+1-555-123-4567",
+		"+1555 1234567",
+	}
+	for _, in := range invalid {
+		if _, err := NormalizePhone(in); err == nil {
+			t.Errorf("NormalizePhone(%q) accepted an invalid number", in)
+		}
+	}
+
+	if got, err := NormalizePhone("  +15551234567  "); err != nil || got != "+15551234567" {
+		t.Errorf("NormalizePhone trimmed = %q err=%v", got, err)
+	}
+}
+
+func TestNormalizeIdentifier(t *testing.T) {
+	kind, value, err := NormalizeIdentifier("  User@Test.Local ")
+	if err != nil || kind != IdentifierEmail || value != "user@test.local" {
+		t.Fatalf("email identifier = %q/%q err=%v", kind, value, err)
+	}
+
+	kind, value, err = NormalizeIdentifier("+15551234567")
+	if err != nil || kind != IdentifierPhone || value != "+15551234567" {
+		t.Fatalf("phone identifier = %q/%q err=%v", kind, value, err)
+	}
+
+	if _, _, err := NormalizeIdentifier(""); err == nil {
+		t.Errorf("empty identifier accepted")
+	}
+	if _, _, err := NormalizeIdentifier("no-at-sign"); err == nil {
+		t.Errorf("non-phone identifier accepted")
+	}
+	if _, _, err := NormalizeIdentifier("@bad"); err == nil {
+		t.Errorf("malformed email accepted")
+	}
+}