package bimg

import (
	"io/ioutil"
	"os"
	"path"
	"testing"
)

func TestDeterminateImageType(t *testing.T) {
	files := []struct {
		name     string
		expected ImageType
	}{
		{"test.jpg", JPEG},
		{"test.png", PNG},
		{"test.webp", WEBP},
	}

	for _, file := range files {
		img, _ := os.Open(path.Join("fixtures", file.name))
		buf, _ := ioutil.ReadAll(img)
		defer img.Close()

		if DetermineImageType(buf) != file.expected {
			t.Fatal("Image type is not valid")
		}
	}
}

func TestDeterminateImageTypeName(t *testing.T) {
	files := []struct {
		name     string
		expected string
	}{
		{"test.jpg", "jpeg"},
		{"test.png", "png"},
		{"test.webp", "webp"},
	}

	for _, file := range files {
		img, _ := os.Open(path.Join("fixtures", file.name))
		buf, _ := ioutil.ReadAll(img)
		defer img.Close()

		if DetermineImageTypeName(buf) != file.expected {
			t.Fatal("Image type is not valid")
		}
	}
}