57 lines
1.5 KiB
Elixir
57 lines
1.5 KiB
Elixir
defmodule FailureTests do
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use ExUnit.Case
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alias Display.Failure
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test "assertion failure with proper expression" do
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error = error(%ExUnit.AssertionError{expr: "hi"})
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assert Failure.format_failure(error) == "Assertion failed in some_file.ex:42\n\"hi\"\n"
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end
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test "assertion failure with message" do
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error = error(%ExUnit.AssertionError{expr: :ex_unit_no_meaningful_value, message: "hola"})
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assert Failure.format_failure(error) == "Assertion failed in some_file.ex:42\nhola\n"
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end
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test "equality failure" do
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error = error(%ExUnit.AssertionError{expr: quote(do: :lol == :wat), left: :lol, right: :wat})
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assert Failure.format_failure(error) == """
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Assertion failed in some_file.ex:42
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:lol == :wat
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left: :lol
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right: :wat
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"""
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end
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test "match failure" do
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error = error(%ExUnit.AssertionError{expr: quote(do: match?(:lol, :wat)), right: :wat})
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assert Failure.format_failure(error) == """
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Assertion failed in some_file.ex:42
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match?(:lol, :wat)
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value does not match: :wat
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"""
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end
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test "only offending lines are displayed for errors" do
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[koan] = SingleArity.all_koans()
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error = apply(SingleArity, koan, []) |> error()
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assert Failure.format_failure(error) == """
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Assertion failed in some_file.ex:42\nmatch?(:foo, ___)
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"""
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end
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defp error(error) do
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%{
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error: error,
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file: "some_file.ex",
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line: 42
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}
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end
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end
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