providers/validate: Fix {{isEnglish}} not comparing against numbers correctly

providers/validate/validate.go

@@ -69,7 +69,11 @@ func (this *Provider) funcIsEnglish(value string) bool {
 	score := 0
 	total := 0
 	for _, char := range value {
-		if char >= 'a' && char <= 'z' || char >= 'A' && char <= 'Z' || char >= '0' || char <= '9' {
+		ok :=
+			char >= 'a' && char <= 'z' ||
+			char >= 'A' && char <= 'Z' ||
+			char >= '0' && char <= '9'
+		if ok {
 			score += 1
 		}
 		total += 1

providers/validate/validate_test.go

@@ -0,0 +1,38 @@
+package validate
+
+import "testing"
+
+func TestFuncIsEnglish(test *testing.T) {
+	russian :=
+		"Качество изделия будет напрямую зависеть от точности " +
+		"соблюдения всех правил технологии выполнения " +
+		"https://some-random-scam-link-they-sent-me.com"
+	symbols :=
+		")(*#&$(*89347928374)(*/./,./,/,./.,) half is english but it " +
+		"will still be over the threshold"
+	english :=
+		"A limousine service offers luxurious, chauffeur-driven " +
+		"vehicles for various occasions. For Seattle residents and " +
+		"visitors, <a href=https://scam.com/> ScamTac airport limo " +
+		"service </a> is a popular choice. This service provides " +
+		"professional chauffeurs who ensure a smooth, comfortable " +
+		"ride to and from ScamTac airport. The fleet typically " +
+		"includes sedans, SUVs, and stretch limousines, catering to " +
+		"different group sizes and preferences. Key features include " +
+		"timely pick-ups, meet-and-greet services, and luggage " +
+		"assistance. Whether for business travel, special events, or " +
+		"simply a stress-free airport transfer, ScamTac airport limo " +
+		"service ensures a high-end travel experience. - " +
+		"https://scam.com/"
+	provider := new(Provider)
+
+	if got, correct := provider.funcIsEnglish(russian), false; got != correct {
+		test.Fatal("incorrect:", correct)
+	}
+	if got, correct := provider.funcIsEnglish(symbols), false; got != correct {
+		test.Fatal("incorrect:", correct)
+	}
+	if got, correct := provider.funcIsEnglish(english), true; got != correct {
+		test.Fatal("incorrect:", correct)
+	}
+}