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BDD testing framework for Elixir inspired by RSpec.
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lib/espec/context.ex
defmodule ESpec.Context do
@moduledoc """
Defines macros 'context', 'describe', and 'example_group'.
Defines macros for 'skip' and 'focus' example groups
"""
@aliases ~w(describe example_group)a
@skipped ~w(xcontext xdescribe xexample_group)a
@focused ~w(fcontext fdescribe fexample_group)a
@doc """
Context has description, line, and options.
Available options are:
- [skip: true] or [skip: "Reason"] - skips examples in the context;
- [focus: true] - sets focus to run with `--focus ` option.
"""
defstruct description: "", module: nil, line: nil, opts: []
@doc "Add context with description and opts to 'example context'."
defmacro context(description, opts, do: block) do
quote do
tail = @context
head = %ESpec.Context{ description: unquote(description), module: __MODULE__, line: __ENV__.line, opts: unquote(opts) }
@context [head | tail]
unquote(block)
@context tail
end
end
@doc "context with opts only"
defmacro context(opts, do: block) when is_list(opts) do
quote do: unquote(__MODULE__).context("", unquote(opts), do: unquote(block))
end
@doc "context with description only"
defmacro context(description, do: block) do
quote do
unquote(__MODULE__).context(unquote(description), [], do: unquote(block))
end
end
@doc "Add empty context."
defmacro context(do: block) do
quote do: unquote(__MODULE__).context("", [], do: unquote(block))
end
@doc "Aliases for `context`."
Enum.each @aliases, fn(func) ->
defmacro unquote(func)(description, opts, do: block) do
quote do: unquote(__MODULE__).context(unquote(description), unquote(opts), do: unquote(block))
end
defmacro unquote(func)(description_or_opts, do: block) do
quote do: unquote(__MODULE__).context(unquote(description_or_opts), do: unquote(block))
end
defmacro unquote(func)(do: block) do
quote do: unquote(__MODULE__).context(do: unquote(block))
end
end
@doc "Macros for skipped contexts"
Enum.each @skipped, fn(func) ->
defmacro unquote(func)(description, opts, do: block) do
reason = "`#{unquote(func)}`"
quote do: unquote(__MODULE__).context(unquote(description), Keyword.put(unquote(opts), :skip, unquote(reason)), do: unquote(block))
end
defmacro unquote(func)(opts, do: block) when is_list(opts) do
reason = "`#{unquote(func)}`"
quote do: unquote(__MODULE__).context(Keyword.put(unquote(opts), :skip, unquote(reason)), do: unquote(block))
end
defmacro unquote(func)(description, do: block) do
reason = "`#{unquote(func)}`"
quote do: unquote(__MODULE__).context(unquote(description), [skip: unquote(reason)], do: unquote(block))
end
defmacro unquote(func)(do: block) do
reason = "`#{unquote(func)}`"
quote do: unquote(__MODULE__).context([skip: unquote(reason)], do: unquote(block))
end
end
@doc "Macros for focused contexts"
Enum.each @focused, fn(func) ->
defmacro unquote(func)(description, opts, do: block) do
quote do: unquote(__MODULE__).context(unquote(description), Keyword.put(unquote(opts), :focus, true), do: unquote(block))
end
defmacro unquote(func)(opts, do: block) when is_list(opts) do
quote do: unquote(__MODULE__).context(Keyword.put(unquote(opts), :focus, true), do: unquote(block))
end
defmacro unquote(func)(description, do: block) do
quote do: unquote(__MODULE__).context(unquote(description), [focus: true], do: unquote(block))
end
defmacro unquote(func)(do: block) do
quote do: unquote(__MODULE__).context([focus: true], do: unquote(block))
end
end
end