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mneme
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Snapshot testing tool using familiar assertions
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lib/mneme/errors.ex
defmodule Mneme.AssertionError do
@moduledoc false
defexception [:message]
end
defmodule Mneme.CompileError do
@moduledoc false
defexception [:message]
end
defmodule Mneme.InternalError do
@moduledoc false
defexception [:original_error, :original_stacktrace]
@impl true
def message(%{original_error: e, original_stacktrace: st}) do
"""
Mneme encountered an internal error. This is likely a bug in Mneme.
Please consider reporting this error at https://github.com/zachallaun/mneme/issues. Thanks!
#{Exception.format(:error, e, st)}
"""
end
end
defmodule Mneme.UnboundVariableError do
@moduledoc false
defexception [:vars, :message]
@impl true
def message(%{message: nil} = exception) do
%{vars: vars} = exception
"""
Updated auto-assertion is missing at least one previously bound variable:
#{format_vars(vars)}
Re-run this test to ensure it still passes.
"""
end
def message(%{message: message}) do
message
end
defp format_vars(vars) do
vars
|> Enum.map(fn
{name, _context} -> name
name -> name
end)
|> Enum.map_join(", ", &Atom.to_string/1)
end
end