package syntax

import "testing"

func TestLanguageRegistryResolveByFiletype(t *testing.T) {
	r := newLanguageRegistry()

	res, ok, err := r.resolve("go", "")
	if err != nil {
		t.Fatalf("resolve error: %v", err)
	}
	if !ok || res == nil {
		t.Fatalf("expected go to resolve")
	}
	if res.id != "go" {
		t.Fatalf("expected go id, got %q", res.id)
	}
}

func TestLanguageRegistryResolveByExtension(t *testing.T) {
	r := newLanguageRegistry()

	res, ok, err := r.resolve("", "main.js")
	if err != nil {
		t.Fatalf("resolve error: %v", err)
	}
	if !ok || res == nil {
		t.Fatalf("expected javascript to resolve")
	}
	if res.id != "javascript" {
		t.Fatalf("expected javascript id, got %q", res.id)
	}
}

func TestLanguageRegistryUnknown(t *testing.T) {
	r := newLanguageRegistry()

	res, ok, err := r.resolve("txt", "notes.txt")
	if err != nil {
		t.Fatalf("expected no error for unknown language, got: %v", err)
	}
	if ok || res != nil {
		t.Fatalf("expected unknown language to not resolve")
	}
}