func (s *JujuConnSuite) tearDownConn(c *gc.C) {
	serverAlive := gitjujutesting.MgoServer.Addr() != ""

	// Bootstrap will set the admin password, and render non-authorized use
	// impossible. s.State may still hold the right password, so try to reset
	// the password so that the MgoSuite soft-resetting works. If that fails,
	// it will still work, but it will take a while since it has to kill the
	// whole database and start over.
	if err := s.State.SetAdminMongoPassword(""); err != nil && serverAlive {
		c.Logf("cannot reset admin password: %v", err)
	}
	for _, st := range s.apiStates {
		err := st.Close()
		if serverAlive {
			c.Assert(err, gc.IsNil)
		}
	}
	err := s.Conn.Close()
	if serverAlive {
		c.Assert(err, gc.IsNil)
	}
	err = s.APIConn.Close()
	if serverAlive {
		c.Assert(err, gc.IsNil)
	}
	dummy.Reset()
	s.apiStates = nil
	s.Conn = nil
	s.State = nil
	utils.SetHome(s.oldHome)
	osenv.SetJujuHome(s.oldJujuHome)
	s.oldHome = ""
	s.RootDir = ""
}

func (s *ImageMetadataSuite) TestImageMetadataBadArgs(c *gc.C) {
	for i, t := range errTests {
		c.Logf("test: %d", i)
		_, err := runImageMetadata(c, s.store, t.args...)
		c.Check(err, gc.NotNil, gc.Commentf("test %d: %s", i, t.args))
		dummy.Reset(c)
	}
}

func (s *SimpleStreamsToolsSuite) resetEnv(c *gc.C, attrs map[string]interface{}) {
	version.Current = s.origCurrentVersion
	dummy.Reset()
	cfg, err := config.New(config.NoDefaults, dummy.SampleConfig().Merge(attrs))
	c.Assert(err, jc.ErrorIsNil)
	env, err := environs.Prepare(cfg, envtesting.BootstrapContext(c), configstore.NewMem())
	c.Assert(err, jc.ErrorIsNil)
	s.env = env
	s.removeTools(c)
}

func (s *ImageMetadataSuite) TestImageMetadataBadArgs(c *gc.C) {
	testing.MakeSampleJujuHome(c)
	s.AddCleanup(func(*gc.C) {
		dummy.Reset()
	})
	for i, t := range errTests {
		c.Logf("test: %d", i)
		ctx := testing.Context(c)
		code := cmd.Main(envcmd.Wrap(&ImageMetadataCommand{}), ctx, t.args)
		c.Check(code, gc.Equals, 1)
	}
}

func (s *bootstrapSuite) TestBootstrapTools(c *gc.C) {
	s.PatchValue(&envtools.BundleTools, toolstesting.GetMockBundleTools(c))
	allTests := append(envtesting.BootstrapToolsTests, bootstrapSetAgentVersionTests...)
	// version.Current is set in the loop so ensure it is restored later.
	s.PatchValue(&version.Current, version.Current)
	for i, test := range allTests {
		c.Logf("\ntest %d: %s", i, test.Info)
		dummy.Reset()
		attrs := dummy.SampleConfig().Merge(coretesting.Attrs{
			"state-server":   false,
			"development":    test.Development,
			"default-series": test.DefaultSeries,
		})
		if test.AgentVersion != version.Zero {
			attrs["agent-version"] = test.AgentVersion.String()
		}
		cfg, err := config.New(config.NoDefaults, attrs)
		c.Assert(err, gc.IsNil)
		env, err := environs.Prepare(cfg, coretesting.Context(c), configstore.NewMem())
		c.Assert(err, gc.IsNil)
		envtesting.RemoveAllTools(c, env)

		version.Current = test.CliVersion
		envtesting.AssertUploadFakeToolsVersions(c, env.Storage(), test.Available...)
		// Remove the default tools URL from the search path, just look in cloud storage.
		s.PatchValue(&envtools.DefaultBaseURL, "")

		cons := constraints.Value{}
		if test.Arch != "" {
			cons = constraints.MustParse("arch=" + test.Arch)
		}
		err = bootstrap.Bootstrap(coretesting.Context(c), env, environs.BootstrapParams{Constraints: cons})
		if test.Err != "" {
			c.Check(err, gc.NotNil)
			if err != nil {
				stripped := strings.Replace(err.Error(), "\n", "", -1)
				c.Check(stripped, gc.Matches, ".*"+stripped)
			}
			continue
		} else {
			c.Check(err, gc.IsNil)
		}
		unique := map[version.Number]bool{}
		for _, expected := range test.Expect {
			unique[expected.Number] = true
		}
		for expectAgentVersion := range unique {
			agentVersion, ok := env.Config().AgentVersion()
			c.Check(ok, gc.Equals, true)
			c.Check(agentVersion, gc.Equals, expectAgentVersion)
		}
	}
}

// resetJujuHome restores an new, clean Juju home environment without tools.
func resetJujuHome(c *gc.C, envName string) environs.Environ {
	jenvDir := gitjujutesting.HomePath(".juju", "environments")
	err := os.RemoveAll(jenvDir)
	c.Assert(err, jc.ErrorIsNil)
	coretesting.WriteEnvironments(c, envConfig)
	dummy.Reset()
	store, err := configstore.Default()
	c.Assert(err, jc.ErrorIsNil)
	env, err := environs.PrepareFromName(envName, envcmd.BootstrapContext(cmdtesting.NullContext(c)), store)
	c.Assert(err, jc.ErrorIsNil)
	return env
}

// resetJujuHome restores an new, clean Juju home environment without tools.
func resetJujuHome(c *gc.C) environs.Environ {
	jenvDir := gitjujutesting.HomePath(".juju", "environments")
	err := os.RemoveAll(jenvDir)
	c.Assert(err, gc.IsNil)
	coretesting.WriteEnvironments(c, envConfig)
	dummy.Reset()
	store, err := configstore.Default()
	c.Assert(err, gc.IsNil)
	env, err := environs.PrepareFromName("peckham", cmdtesting.NullContext(c), store)
	c.Assert(err, gc.IsNil)
	envtesting.RemoveAllTools(c, env)
	return env
}

func (s *ConnSuite) TearDownTest(c *gc.C) {
	if s.conn == nil {
		return
	}
	err := s.conn.State.SetAdminMongoPassword("")
	c.Assert(err, gc.IsNil)
	err = s.conn.Environ.Destroy()
	c.Check(err, gc.IsNil)
	assertClose(c, s.conn)
	s.conn = nil
	dummy.Reset()
	s.ToolsFixture.TearDownTest(c)
	s.MgoSuite.TearDownTest(c)
	s.BaseSuite.TearDownTest(c)
}

func (s *ToolsMetadataSuite) SetUpTest(c *gc.C) {
	s.FakeJujuHomeSuite.SetUpTest(c)
	s.AddCleanup(func(*gc.C) {
		dummy.Reset()
		loggo.ResetLoggers()
	})
	env, err := environs.PrepareFromName(
		"erewhemos", envcmd.BootstrapContextNoVerify(coretesting.Context(c)), configstore.NewMem())
	c.Assert(err, jc.ErrorIsNil)
	s.env = env
	loggo.GetLogger("").SetLogLevel(loggo.INFO)

	// Switch the default tools location.
	s.publicStorageDir = c.MkDir()
	s.PatchValue(&tools.DefaultBaseURL, s.publicStorageDir)
}

func (s *SimpleStreamsToolsSuite) resetEnv(c *gc.C, attrs map[string]interface{}) {
	jujuversion.Current = s.origCurrentVersion
	dummy.Reset(c)
	attrs = dummy.SampleConfig().Merge(attrs)
	env, err := environs.Prepare(envtesting.BootstrapContext(c),
		jujuclienttesting.NewMemStore(),
		environs.PrepareParams{
			ControllerName: attrs["name"].(string),
			BaseConfig:     attrs,
			CloudName:      "dummy",
		},
	)
	c.Assert(err, jc.ErrorIsNil)
	s.env = env
	s.removeTools(c)
}

func (s *JujuConnSuite) tearDownConn(c *gc.C) {
	testServer := gitjujutesting.MgoServer.Addr()
	serverAlive := testServer != ""

	// Bootstrap will set the admin password, and render non-authorized use
	// impossible. s.State may still hold the right password, so try to reset
	// the password so that the MgoSuite soft-resetting works. If that fails,
	// it will still work, but it will take a while since it has to kill the
	// whole database and start over.
	if s.State != nil {
		if err := s.State.SetAdminMongoPassword(""); err != nil && serverAlive {
			c.Logf("cannot reset admin password: %v", err)
		}
		err := s.State.Close()
		if serverAlive {
			// This happens way too often with failing tests,
			// so add some context in case of an error.
			c.Check(
				err,
				gc.IsNil,
				gc.Commentf("closing state failed, testing server %q is alive", testServer),
			)
		}
		s.State = nil
	}
	for _, st := range s.apiStates {
		err := st.Close()
		if serverAlive {
			c.Check(err, gc.IsNil)
		}
	}
	s.apiStates = nil
	if s.APIState != nil {
		err := s.APIState.Close()
		s.APIState = nil
		if serverAlive {
			c.Check(err, gc.IsNil)
		}
	}
	dummy.Reset()
	utils.SetHome(s.oldHome)
	osenv.SetJujuHome(s.oldJujuHome)
	s.oldHome = ""
	s.RootDir = ""
}

func (s *SimpleStreamsToolsSuite) resetEnv(c *gc.C, attrs map[string]interface{}) {
	jujuversion.Current = s.origCurrentVersion
	dummy.Reset(c)
	attrs = dummy.SampleConfig().Merge(attrs)
	env, err := bootstrap.Prepare(envtesting.BootstrapContext(c),
		jujuclienttesting.NewMemStore(),
		bootstrap.PrepareParams{
			ControllerConfig: coretesting.FakeControllerConfig(),
			ControllerName:   attrs["name"].(string),
			ModelConfig:      attrs,
			Cloud:            dummy.SampleCloudSpec(),
			AdminSecret:      "admin-secret",
		},
	)
	c.Assert(err, jc.ErrorIsNil)
	s.env = env
	s.removeTools(c)
}

func (s *BootstrapSuite) TestBootstrapAPIReadyRetries(c *gc.C) {
	s.PatchValue(&bootstrapReadyPollDelay, 1*time.Millisecond)
	s.PatchValue(&bootstrapReadyPollCount, 5)
	defaultSeriesVersion := jujuversion.Current
	// Force a dev version by having a non zero build number.
	// This is because we have not uploaded any tools and auto
	// upload is only enabled for dev versions.
	defaultSeriesVersion.Build = 1234
	s.PatchValue(&jujuversion.Current, defaultSeriesVersion)
	for _, t := range []struct {
		numRetries int
		err        error
	}{
		{0, nil}, // agent ready immediately
		{2, nil}, // agent ready after 2 polls
		{6, &rpc.RequestError{
			Message: params.CodeUpgradeInProgress,
			Code:    params.CodeUpgradeInProgress,
		}}, // agent ready after 6 polls but that's too long
		{-1, errOther}, // another error is returned
	} {
		resetJujuXDGDataHome(c)
		dummy.Reset(c)
		s.store = jujuclienttesting.NewMemStore()

		s.mockBlockClient.numRetries = t.numRetries
		s.mockBlockClient.retryCount = 0
		_, err := coretesting.RunCommand(
			c, s.newBootstrapCommand(),
			"devcontroller", "dummy", "--auto-upgrade",
		)
		c.Check(errors.Cause(err), gc.DeepEquals, t.err)
		expectedRetries := t.numRetries
		if t.numRetries <= 0 {
			expectedRetries = 1
		}
		// Only retry maximum of bootstrapReadyPollCount times.
		if expectedRetries > 5 {
			expectedRetries = 5
		}
		c.Check(s.mockBlockClient.retryCount, gc.Equals, expectedRetries)
	}
}

func (s *APIEndpointForEnvSuite) TestAPIEndpointNotCached(c *gc.C) {
	coretesting.WriteEnvironments(c, coretesting.MultipleEnvConfig)
	store, err := configstore.Default()
	c.Assert(err, gc.IsNil)
	ctx := coretesting.Context(c)
	env, err := environs.PrepareFromName("erewhemos", ctx, store)
	c.Assert(err, gc.IsNil)
	defer dummy.Reset()
	envtesting.UploadFakeTools(c, env.Storage())
	err = bootstrap.Bootstrap(ctx, env, environs.BootstrapParams{})
	c.Assert(err, gc.IsNil)

	// Note: if we get Bootstrap to start caching the API endpoint
	// immediately, we'll still want to have this test for compatibility.
	// We can just write blank info instead of reading and checking it is empty.
	savedInfo, err := store.ReadInfo("erewhemos")
	c.Assert(err, gc.IsNil)
	// Ensure that the data isn't cached
	c.Check(savedInfo.APIEndpoint().Addresses, gc.HasLen, 0)

	called := 0
	expectState := mockedAPIState(true, true)
	apiOpen := func(apiInfo *api.Info, opts api.DialOpts) (juju.APIState, error) {
		c.Check(apiInfo.Tag, gc.Equals, "user-admin")
		c.Check(string(apiInfo.CACert), gc.Equals, coretesting.CACert)
		c.Check(apiInfo.Password, gc.Equals, coretesting.DefaultMongoPassword)
		c.Check(opts, gc.DeepEquals, api.DefaultDialOpts())
		// we didn't know about it when connecting
		c.Check(apiInfo.EnvironTag, gc.Equals, "")
		called++
		return expectState, nil
	}
	endpoint, err := juju.APIEndpointInStore("erewhemos", false, store, apiOpen)
	c.Assert(err, gc.IsNil)
	c.Assert(called, gc.Equals, 1)
	c.Check(endpoint.Addresses, gc.DeepEquals, []string{"0.1.2.3:1234"})
	c.Check(endpoint.EnvironUUID, gc.Equals, "fake-uuid")
}

func (s *syncSuite) tearDownTest(c *gc.C) {
	dummy.Reset()
	version.Current = s.origVersion
	s.ToolsFixture.TearDownTest(c)
	s.FakeJujuHomeSuite.TearDownTest(c)
}

func (s *BootstrapSuite) TearDownSuite(c *gc.C) {
	s.MgoSuite.TearDownSuite(c)
	s.BaseSuite.TearDownSuite(c)
	dummy.Reset()
}

func (s *uploadSuite) TearDownTest(c *gc.C) {
	dummy.Reset()
	s.ToolsFixture.TearDownTest(c)
	s.FakeJujuHomeSuite.TearDownTest(c)
}

func (s *SimpleStreamsToolsSuite) TearDownTest(c *gc.C) {
	dummy.Reset()
	version.Current = s.origCurrentVersion
	s.ToolsFixture.TearDownTest(c)
	s.BaseSuite.TearDownTest(c)
}

func (cs *NewAPIClientSuite) TearDownTest(c *gc.C) {
	dummy.Reset()
	cs.FakeJujuHomeSuite.TearDownTest(c)
}

func (s *URLsSuite) TearDownTest(c *gc.C) {
	dummy.Reset()

	s.BaseSuite.TearDownTest(c)
}