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tiny yield fixture

Project description

https://travis-ci.org/podhmo/yieldfixture.svg?branch=master

how to use

from yieldfixture import create
run, yield_fixture = create()


@yield_fixture
def f():
    print(">>> f")
    yield 1
    print(">>> f")


@yield_fixture
def g():
    print("  >>> g")
    yield 2
    print("  >>> g")


@run
def use_it(x, y):
    print("{} + {} = {}".format(x, y, x + y))

output

>>> f
  >>> g
1 + 2 = 3
  >>> g
>>> f

with context

from yieldfixture import create, with_context
run, yield_fixture = create()


@yield_fixture
@with_context
def f(ctx):
    i = ctx["i"] = 0
    print("{}>>> f".format("  " * i))
    yield 1
    print("{}>>> f".format("  " * i))


@yield_fixture
@with_context
def g(ctx):
    i = ctx["i"] = ctx["i"] + 1
    print("{}>>> g".format("  " * i))
    yield 2
    print("{}>>> g".format("  " * i))


@run
def use_it(x, y, *, i=0):
    print("{}{} + {} = {}".format("  " * (i + 1), x, y, x + y))

output

>>> f
  >>> g
    1 + 2 = 3
  >>> g
>>> f

when a exception is raised

from yieldfixture import create, with_context
run, yield_fixture = create()


@yield_fixture
@with_context
def f(ctx):
    i = ctx["i"] = 0
    print("{}>>> f".format("  " * i))
    yield 1
    print("{}>>> f".format("  " * i))


@yield_fixture
@with_context
def g(ctx):
    i = ctx["i"] = ctx["i"] + 1
    print("{}>>> g".format("  " * i))
    yield 2
    print("{}>>> g".format("  " * i))


@run
def use_it(x, y, *, i=0):
    print("{}{} + {} = {}".format("  " * (i + 1), x, y, x + y))
    1 / 0

output

>>> f
  >>> g
    1 + 2 = 3
  >>> g
>>> f
Traceback (most recent call last):
  File "examples/02withexception.py", line 24, in <module>
    def use_it(x, y, *, i=0):
  File "$HOME/vboxshare/venvs/my3/yieldfixture/yieldfixture/__init__.py", line 125, in run_with
    return fn(*ctx.args, **ctx.kwargs)
  File "examples/02withexception.py", line 26, in use_it
    1 / 0
ZeroDivisionError: division by zero

selective fixture activation

from yieldfixture import create, with_context
run, yield_fixture = create()


@yield_fixture
@with_context
def f(ctx):
    i = ctx["i"] = ctx.get("i", -1) + 1
    print("{}>>> f".format("  " * i))
    yield 1
    print("{}>>> f".format("  " * i))


@yield_fixture
@with_context
def g(ctx):
    i = ctx["i"] = ctx.get("i", -1) + 1
    print("{}>>> g".format("  " * i))
    yield 2
    print("{}>>> g".format("  " * i))


@run
def use_it(x, y, *, i=0):
    print("{}{} + {} = {}".format("  " * (i + 1), x, y, x + y))


@run([g, f])
def use_it2(x, y, *, i=0):
    print("{}{} + {} = {}".format("  " * (i + 1), x, y, x + y))

output

>>> f
  >>> g
    1 + 2 = 3
  >>> g
>>> f
>>> g
  >>> f
    2 + 1 = 3
  >>> f
>>> g

0.3.2

  • only tuple treated as multiple values

0.3.1

  • dispatch hook

0.3.0

  • some internal refactoring(mainly, rename methods)

0.2.0

  • calling teardown action, absolutely

0.1.1

  • first release

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