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Pytest - multiple setup fixtures
Code testing, patterns, profiles and optimisation. example from a Well House Consultants training course
More on Code testing, patterns, profiles and optimisation. [link]
Source code: test_mathfuncs5.py Module: Y212
# Pytest - multiple setup fixtures

# Stuff to be tested
# from mathstuff import *
# yes but to make this "all in one container" have a class to test here ;-)

class thing(object):
        def __init__(this,*stuff,**others):
                this.stuff = stuff
                this.others = others
        def get(this,name):
                try:
                        result = this.others[name]
                except:
                        result = None
                return result
        def set(this,name,value=None):
                previous = this.get(name)
                this.others[name] = value
                return previous
        def getarea(this):
                result = this.others["width"] * this.others["depth"]
                return result

# -------- tests -------------------

import pytest

@pytest.fixture
def widget():
        try:
                rv = widget.w
                print("FROZEN")
        except:
                widget.w = thing(4,6,8,height=16,width=24,depth=10)
                rv = widget.w
                print("FRESH")
        return rv

@pytest.fixture
def etc():
        print("FURTHER")
        return "nothing"

def test_add_001(widget):
        print ("001");
        assert widget.get("width") == 24

def test_add_002(widget):
        print ("002");
        assert widget.getarea() == 240

        old_depth = widget.set("depth",12)
        assert old_depth == 10
        assert widget.get("depth") == 12

# NOTE ... test 3 depends on the outcome of test two. This is horrid stuff
# and breaks all the rules I have been taught about keeping tests separate
# and I had to force the fixure by using a static member

# But there are times you'll want to do this if setup is timeconsuming and expensive

def test_add_003(widget):
        assert widget.getarea() == 288

def test_add_004(widget,etc):
        assert widget.getarea() == 288


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