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defmodule DartSassTest do
  use ExUnit.Case, async: true

  test "run on default" do
    assert ExUnit.CaptureIO.capture_io(fn ->
             assert DartSass.run(:default, ["--version"]) == 0
           end) =~ "1.36.0"
  end

  test "run on profile" do
    assert ExUnit.CaptureIO.capture_io(fn ->
             assert DartSass.run(:another, []) == 0
           end) =~ "1.36.0"
  end
end

kmx.io/dart_sass/test/dart_sass_test.exs

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test/dart_sass_test.exs