package render

import (
	"strings"
	"testing"
)

func TestHighlightClassBasedNoInlineStyle(t *testing.T) {
	html, err := Highlight("main.go", []byte("package main\n\nfunc main() {}\n"))
	if err != nil {
		t.Fatalf("Highlight: %v", err)
	}
	s := string(html)
	if !strings.Contains(s, "class=") {
		t.Fatal("expected class-based output")
	}
	if strings.Contains(s, "style=") {
		t.Fatalf("unexpected inline style in output: %s", s)
	}
}

func TestIsBinary(t *testing.T) {
	if IsBinary([]byte("hello world\n")) {
		t.Fatal("text reported as binary")
	}
	if !IsBinary([]byte("PNG\x00\x01\x02binary")) {
		t.Fatal("binary not detected")
	}
	if IsBinary(nil) {
		t.Fatal("empty reported as binary")
	}
}