#8: implement ManageSieve protocol server (RFC 5804)

services/protocols/internal/domain/entity/sieve_validator_test.go

@@ -0,0 +1,59 @@
+package entity
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestValidateSieveScript_ValidScripts(t *testing.T) {
+	validScripts := []string{
+		`require ["fileinto", "reject"];
+if header :is "Subject" "Spam" {
+    fileinto "Junk";
+    stop;
+}`,
+		`# Simple keep script
+keep;`,
+		`/* Multi-line comment
+   testing Sieve script */
+if size :over 1M {
+    discard;
+} else {
+    keep;
+}`,
+	}
+
+	for i, s := range validScripts {
+		if err := ValidateSieveScript(s); err != nil {
+			t.Errorf("script %d failed: %v", i, err)
+		}
+	}
+}
+
+func TestValidateSieveScript_InvalidScripts(t *testing.T) {
+	tests := []struct {
+		name   string
+		script string
+		wantErr error
+	}{
+		{"empty", "", ErrEmptyScript},
+		{"whitespace", "   \n\t  ", ErrEmptyScript},
+		{"unmatched opening brace", `if true { keep;`, ErrUnmatchedBrace},
+		{"unmatched closing brace", `if true { keep; }}`, ErrUnmatchedBrace},
+		{"unmatched bracket", `require ["fileinto";`, ErrUnmatchedBracket},
+		{"unterminated string", `fileinto "Junk;`, ErrUnterminatedQuote},
+		{"unterminated comment", `/* comment without end`, ErrUnterminatedComment},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := ValidateSieveScript(tt.script)
+			if err == nil {
+				t.Fatalf("expected error for %s, got nil", tt.name)
+			}
+			if !errors.Is(err, tt.wantErr) {
+				t.Errorf("error = %v, want %v", err, tt.wantErr)
+			}
+		})
+	}
+}