test(version): add a test to enforce the version format

internal/version/version_test.go

@@ -0,0 +1,34 @@
+// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package version // import "miniflux.app/v2/internal/version"
+
+import (
+	"strconv"
+	"strings"
+	"testing"
+	"unicode"
+)
+
+// Some Miniflux clients expect a specific version format with at least a digit.
+func TestVersionConvertedToInteger(t *testing.T) {
+	var b strings.Builder
+	for _, r := range Version {
+		if unicode.IsDigit(r) {
+			b.WriteRune(r)
+		}
+	}
+
+	if b.Len() == 0 {
+		t.Fatalf("Expected version to contain digits, got %q", Version)
+	}
+
+	versionInt, err := strconv.ParseInt(b.String(), 10, 64)
+	if err != nil {
+		t.Fatalf("Failed to convert version to integer: %v", err)
+	}
+
+	if versionInt <= 0 {
+		t.Errorf("Expected version integer to be greater than 0, got %d", versionInt)
+	}
+}