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BDD testing framework for Elixir inspired by RSpec.
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lib/espec/assertions/string/end_with.ex
defmodule ESpec.Assertions.String.EndWith do
@moduledoc """
Defines 'end_with' assertion.
it do: expect(string).to end_with(value)
"""
use ESpec.Assertions.Interface
defp match(string, val) do
result = String.ends_with?(string, val)
if result do
{result, val}
else
val = if is_list(val), do: List.first(val), else: val
length_l = String.length(string)
length_r = String.length(val)
if length_l <= length_r do
{result, string}
else
{_, ends} = String.split_at(string, length_l - length_r)
{result, ends}
end
end
end
defp success_message(string, val, _result, positive) do
to = if positive, do: "ends", else: "doesn't end"
"`#{inspect(string)}` #{to} with `#{inspect(val)}`."
end
defp error_message(string, val, result, positive) do
to = if positive, do: "to", else: "not to"
m = "Expected `#{inspect(string)}` #{to} end with `#{val}` but it ends with `#{result}`."
if positive do
{m, %{diff_fn: fn -> ESpec.Diff.diff(result, val) end}}
else
m
end
end
end