func (s *RunCommandSuite) TestRunCommandsEnvStdOutAndErrAndRC(c *gc.C) {
	// TODO(bogdanteleaga): powershell throws another exit status code when
	// outputting to stderr using Write-Error. Either find another way to
	// output to stderr or change the checks
	if runtime.GOOS == "windows" {
		c.Skip("bug 1403084: Have to figure out a good way to output to stderr from powershell")
	}
	ctx, err := s.contextFactory.HookContext(hook.Info{Kind: hooks.ConfigChanged})
	c.Assert(err, jc.ErrorIsNil)
	paths := runnertesting.NewRealPaths(c)
	runner := runner.NewRunner(ctx, paths)

	commands := `
echo $JUJU_CHARM_DIR
echo this is standard err >&2
exit 42
`
	result, err := runner.RunCommands(commands)
	c.Assert(err, jc.ErrorIsNil)

	c.Assert(result.Code, gc.Equals, 42)
	c.Assert(strings.TrimRight(string(result.Stdout), "\r\n"), gc.Equals, paths.GetCharmDir())
	c.Assert(strings.TrimRight(string(result.Stderr), "\r\n"), gc.Equals, "this is standard err")
	c.Assert(ctx.GetProcess(), gc.NotNil)
}

func (s *HookContextSuite) getHookContext(c *gc.C, uuid string, relid int,
	remote string, proxies proxy.Settings) *context.HookContext {
	if relid != -1 {
		_, found := s.apiRelunits[relid]
		c.Assert(found, jc.IsTrue)
	}
	facade, err := s.st.Uniter()
	c.Assert(err, jc.ErrorIsNil)

	relctxs := map[int]*context.ContextRelation{}
	for relId, relUnit := range s.apiRelunits {
		cache := context.NewRelationCache(relUnit.ReadSettings, nil)
		relctxs[relId] = context.NewContextRelation(relUnit, cache)
	}

	env, err := s.State.Environment()
	c.Assert(err, jc.ErrorIsNil)

	context, err := context.NewHookContext(s.apiUnit, facade, "TestCtx", uuid,
		env.Name(), relid, remote, relctxs, apiAddrs,
		proxies, false, nil, nil, s.machine.Tag().(names.MachineTag),
		runnertesting.NewRealPaths(c))
	c.Assert(err, jc.ErrorIsNil)
	return context
}

func (s *RunHookSuite) TestRunHook(c *gc.C) {
	for i, t := range runHookTests {
		c.Logf("\ntest %d: %s; perm %v", i, t.summary, t.spec.perm)
		ctx, err := s.contextFactory.HookContext(hook.Info{Kind: hooks.ConfigChanged})
		c.Assert(err, jc.ErrorIsNil)

		paths := runnertesting.NewRealPaths(c)
		rnr := runner.NewRunner(ctx, paths)
		var hookExists bool
		if t.spec.perm != 0 {
			spec := t.spec
			spec.dir = "hooks"
			spec.name = hookName
			c.Logf("makeCharm %#v", spec)
			makeCharm(c, spec, paths.GetCharmDir())
			hookExists = true
		}
		t0 := time.Now()
		err = rnr.RunHook("something-happened")
		if t.err == "" && hookExists {
			c.Assert(err, jc.ErrorIsNil)
		} else if !hookExists {
			c.Assert(context.IsMissingHookError(err), jc.IsTrue)
		} else {
			c.Assert(err, gc.ErrorMatches, t.err)
		}
		if t.spec.background != "" && time.Now().Sub(t0) > 5*time.Second {
			c.Errorf("background process holding up hook execution")
		}
	}
}

func (s *FlushContextSuite) TestBuiltinMetricNotGeneratedIfNotDefined(c *gc.C) {
	uuid := utils.MustNewUUID()
	paths := runnertesting.NewRealPaths(c)
	ctx := s.getMeteredHookContext(c, uuid.String(), -1, "", noProxies, true, s.metricsDefinition("pings"), paths)
	reader, err := spool.NewJSONMetricReader(
		paths.GetMetricsSpoolDir(),
	)

	err = ctx.Flush("some badge", nil)
	c.Assert(err, jc.ErrorIsNil)
	batches, err := reader.Read()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(batches, gc.HasLen, 0)
}

func (s *ContextFactorySuite) SetUpTest(c *gc.C) {
	s.HookContextSuite.SetUpTest(c)
	s.paths = runnertesting.NewRealPaths(c)
	s.membership = map[int][]string{}

	contextFactory, err := context.NewContextFactory(
		s.uniter,
		s.unit.Tag().(names.UnitTag),
		runnertesting.FakeTracker{},
		s.getRelationInfos,
		s.storage,
		s.paths,
	)
	c.Assert(err, jc.ErrorIsNil)
	s.factory = contextFactory
}

func (s *RunMockContextSuite) SetUpTest(c *gc.C) {
	s.IsolationSuite.SetUpTest(c)
	s.paths = runnertesting.NewRealPaths(c)
}

func (s *ContextSuite) SetUpTest(c *gc.C) {
	s.JujuConnSuite.SetUpTest(c)

	s.machine = nil

	ch := s.AddTestingCharm(c, "wordpress")
	s.service = s.AddTestingService(c, "u", ch)
	s.unit = s.AddUnit(c, s.service)

	storageData0 := names.NewStorageTag("data/0")
	s.storage = &runnertesting.StorageContextAccessor{
		map[names.StorageTag]*runnertesting.ContextStorage{
			storageData0: &runnertesting.ContextStorage{
				storageData0,
				storage.StorageKindBlock,
				"/dev/sdb",
			},
		},
	}

	password, err := utils.RandomPassword()
	err = s.unit.SetPassword(password)
	c.Assert(err, jc.ErrorIsNil)
	s.st = s.OpenAPIAs(c, s.unit.Tag(), password)
	s.uniter, err = s.st.Uniter()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(s.uniter, gc.NotNil)
	s.apiUnit, err = s.uniter.Unit(s.unit.Tag().(names.UnitTag))
	c.Assert(err, jc.ErrorIsNil)

	s.paths = runnertesting.NewRealPaths(c)
	s.membership = map[int][]string{}

	// Note: The unit must always have a charm URL set, because this
	// happens as part of the installation process (that happens
	// before the initial install hook).
	err = s.unit.SetCharmURL(ch.URL())
	c.Assert(err, jc.ErrorIsNil)
	s.relch = s.AddTestingCharm(c, "mysql")
	s.relunits = map[int]*state.RelationUnit{}
	s.apiRelunits = map[int]*uniter.RelationUnit{}
	s.AddContextRelation(c, "db0")
	s.AddContextRelation(c, "db1")

	s.contextFactory, err = context.NewContextFactory(
		s.uniter,
		s.unit.Tag().(names.UnitTag),
		runnertesting.FakeTracker{},
		s.getRelationInfos,
		s.storage,
		s.paths,
	)
	c.Assert(err, jc.ErrorIsNil)

	factory, err := runner.NewFactory(
		s.uniter,
		s.paths,
		s.contextFactory,
	)
	c.Assert(err, jc.ErrorIsNil)
	s.factory = factory
}