defmodule ImageToolsTest do
  use ExUnit.Case
  import ExUnit.CaptureIO

  @test_image File.read!(Path.join(__DIR__, "assets/sample.jpg"))

  test "create_thumbnail/4 creates a thumbnail successfully" do
    assert {:ok, binary} = ImageTools.create_thumbnail(@test_image, 320, 240)
    assert is_binary(binary)
  end

  test "create_thumbnail/4 handles quality option" do
    assert {:ok, binary} = ImageTools.create_thumbnail(@test_image, 320, 240, quality: 50)
    assert is_binary(binary)
  end

  test "create_thumbnail/4 handles target_size option" do
    assert {:ok, binary} = ImageTools.create_thumbnail(@test_image, 320, 240, target_size: 12_000)
    assert is_binary(binary)
  end

  test "create_thumbnail/4 handles invalid input" do
    assert {:error, "width must be > 0"} = ImageTools.create_thumbnail(@test_image, 0, 240)
    assert {:error, "height must be > 0"} = ImageTools.create_thumbnail(@test_image, 320, 0)
    assert {:error, "quality must be >= 0"} = ImageTools.create_thumbnail(@test_image, 320, 240, quality: -1)
    assert {:error, "quality must be <= 100"} = ImageTools.create_thumbnail(@test_image, 320, 240, quality: 101)
    assert {:error, "target_size must be > 0"} = ImageTools.create_thumbnail(@test_image, 320, 240, target_size: 0)
  end
end