testutil

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 Go to latest Published: Apr 20, 2021 License: MPL-2.0 Imports: 26 Imported by: 0

README

Consul Testing Utilities

This package provides some generic helpers to facilitate testing in Consul.

TestServer

TestServer is a harness for managing Consul agents and initializing them with test data. Using it, you can form test clusters, create services, add health checks, manipulate the K/V store, etc. This test harness is completely decoupled from Consul's core and API client, meaning it can be easily imported and used in external unit tests for various applications. It works by invoking the Consul CLI, which means it is a requirement to have Consul installed in the $PATH.

Following is an example usage:

package my_program

import (
	"testing"

	"github.com/hashicorp/consul/consul/structs"
	"github.com/hashicorp/consul/sdk/testutil"
)

func TestFoo_bar(t *testing.T) {
	// Create a test Consul server
	srv1, err := testutil.NewTestServerConfigT(t, nil)
	if err != nil {
		t.Fatal(err)
	}
	defer srv1.Stop()

	// Create a secondary server, passing in configuration
	// to avoid bootstrapping as we are forming a cluster.
	srv2, err := testutil.NewTestServerConfigT(t, func(c *testutil.TestServerConfig) {
		c.Bootstrap = false
	})
	if err != nil {
		t.Fatal(err)
	}
	defer srv2.Stop()

	// Join the servers together
	srv1.JoinLAN(t, srv2.LANAddr)

	// Create a test key/value pair
	srv1.SetKV(t, "foo", []byte("bar"))

	// Create lots of test key/value pairs
	srv1.PopulateKV(t, map[string][]byte{
		"bar": []byte("123"),
		"baz": []byte("456"),
	})

	// Create a service
	srv1.AddService(t, "redis", structs.HealthPassing, []string{"master"})

	// Create a service that will be accessed in target source code
	srv1.AddAccessibleService("redis", structs.HealthPassing, "127.0.0.1", 6379, []string{"master"})

	// Create a service check
	srv1.AddCheck(t, "service:redis", "redis", structs.HealthPassing)

	// Create a node check
	srv1.AddCheck(t, "mem", "", structs.HealthCritical)

	// The HTTPAddr field contains the address of the Consul
	// API on the new test server instance.
	println(srv1.HTTPAddr)

	// All functions also have a wrapper method to limit the passing of "t"
	wrap := srv1.Wrap(t)
	wrap.SetKV("foo", []byte("bar"))
}

Documentation

Index

Constants

View Source 
const (
	HealthAny      = "any"
	HealthPassing  = "passing"
	HealthWarning  = "warning"
	HealthCritical = "critical"
	HealthMaint    = "maintenance"
)

copied from testutil to break circular dependency

Variables

This section is empty.

Functions

func Logger 

func Logger(t TestingTB) hclog.InterceptLogger

func LoggerWithOutput 

func LoggerWithOutput(t TestingTB, output io.Writer) hclog.InterceptLogger

func NewLogBuffer 

func NewLogBuffer(t TestingTB) io.Writer

NewLogBuffer returns an io.Writer which buffers all writes. When the test ends, t.Failed is checked. If the test has failed or has been run in verbose mode all log output is printed to stdout.

Set the env var NOLOGBUFFER=1 to disable buffering, resulting in all log output being written immediately to stdout.

func RequireErrorContains 

func RequireErrorContains(t testing.TB, err error, expectedErrorMessage string)

RequireErrorContains is a test helper for asserting that an error occurred and the error message returned contains the expected error message as a substring.

func TempDir 

func TempDir(t testing.TB, name string) string

TempDir creates a temporary directory within tmpdir with the name 'testname-name'. If the directory cannot be created t.Fatal is called. The directory will be removed when the test ends. Set TEST_NOCLEANUP env var to prevent the directory from being removed.

func TempFile 

func TempFile(t testing.TB, name string) *os.File

TempFile creates a temporary file within tmpdir with the name 'testname-name'. If the file cannot be created t.Fatal is called. If a temporary directory has been created before consider storing the file inside this directory to avoid double cleanup. The file will be removed when the test ends. Set TEST_NOCLEANUP env var to prevent the file from being removed.

Types

type ServerConfigCallback 

type ServerConfigCallback func(c *TestServerConfig)

ServerConfigCallback is a function interface which can be passed to NewTestServerConfig to modify the server config.

type TestACLs 

type TestACLs struct {
	Enabled             bool       `json:"enabled,omitempty"`
	TokenReplication    bool       `json:"enable_token_replication,omitempty"`
	PolicyTTL           string     `json:"policy_ttl,omitempty"`
	TokenTTL            string     `json:"token_ttl,omitempty"`
	DownPolicy          string     `json:"down_policy,omitempty"`
	DefaultPolicy       string     `json:"default_policy,omitempty"`
	EnableKeyListPolicy bool       `json:"enable_key_list_policy,omitempty"`
	Tokens              TestTokens `json:"tokens,omitempty"`
	DisabledTTL         string     `json:"disabled_ttl,omitempty"`
}

type TestAddressConfig 

type TestAddressConfig struct {
	HTTP string `json:"http,omitempty"`
}

TestAddressConfig contains the bind addresses for various components of the Consul server.

type TestCheck 

type TestCheck struct {
	ID        string `json:",omitempty"`
	Name      string `json:",omitempty"`
	ServiceID string `json:",omitempty"`
	TTL       string `json:",omitempty"`
}

TestCheck is used to serialize a check definition.

type TestKVResponse 

type TestKVResponse struct {
	Value string
}

TestKVResponse is what we use to decode KV data.

type TestNetworkSegment 

type TestNetworkSegment struct {
	Name      string `json:"name"`
	Bind      string `json:"bind"`
	Port      int    `json:"port"`
	Advertise string `json:"advertise"`
}

TestNetworkSegment contains the configuration for a network segment.

type TestPerformanceConfig 

type TestPerformanceConfig struct {
	RaftMultiplier uint `json:"raft_multiplier,omitempty"`
}

TestPerformanceConfig configures the performance parameters.

type TestPortConfig 

type TestPortConfig struct {
	DNS          int `json:"dns,omitempty"`
	HTTP         int `json:"http,omitempty"`
	HTTPS        int `json:"https,omitempty"`
	SerfLan      int `json:"serf_lan,omitempty"`
	SerfWan      int `json:"serf_wan,omitempty"`
	Server       int `json:"server,omitempty"`
	ProxyMinPort int `json:"proxy_min_port,omitempty"`
	ProxyMaxPort int `json:"proxy_max_port,omitempty"`
}

TestPortConfig configures the various ports used for services provided by the Consul server.

type TestServer 

type TestServer struct {
	Config *TestServerConfig

	HTTPAddr  string
	HTTPSAddr string
	LANAddr   string
	WANAddr   string

	HTTPClient *http.Client
	// contains filtered or unexported fields
}

TestServer is the main server wrapper struct.

func NewTestServerConfigT 

func NewTestServerConfigT(t TestingTB, cb ServerConfigCallback) (*TestServer, error)

NewTestServerConfigT creates a new TestServer, and makes a call to an optional callback function to modify the configuration. If there is an error configuring or starting the server, the server will NOT be running when the function returns (thus you do not need to stop it).

func (*TestServer) AddAddressableService 

func (s *TestServer) AddAddressableService(t testing.TB, name, status, address string, port int, tags []string)

AddAddressableService adds a new service to the Consul instance by passing "address" and "port". It is helpful when you need to prepare a fakeService that maybe accessed with in target source code. It also automatically adds a health check with the given status, which can be one of "passing", "warning", or "critical", just like `AddService` does.

func (*TestServer) AddCheck 

func (s *TestServer) AddCheck(t testing.TB, name, serviceID, status string)

AddCheck adds a check to the Consul instance. If the serviceID is left empty (""), then the check will be associated with the node. The check status may be "passing", "warning", or "critical".

func (*TestServer) AddService 

func (s *TestServer) AddService(t testing.TB, name, status string, tags []string)

AddService adds a new service to the Consul instance. It also automatically adds a health check with the given status, which can be one of "passing", "warning", or "critical".

func (*TestServer) GetKV 

func (s *TestServer) GetKV(t testing.TB, key string) []byte

GetKV retrieves a single key and returns its value

func (*TestServer) GetKVString 

func (s *TestServer) GetKVString(t testing.TB, key string) string

GetKVString retrieves a value from the store, but returns as a string instead of []byte.

func (*TestServer) JoinLAN 

func (s *TestServer) JoinLAN(t testing.TB, addr string)

JoinLAN is used to join local datacenters together.

func (*TestServer) JoinWAN 

func (s *TestServer) JoinWAN(t testing.TB, addr string)

JoinWAN is used to join remote datacenters together.

func (*TestServer) ListKV 

func (s *TestServer) ListKV(t testing.TB, prefix string) []string

ListKV returns a list of keys present in the KV store. This will list all keys under the given prefix recursively and return them as a slice.

func (*TestServer) PopulateKV 

func (s *TestServer) PopulateKV(t testing.TB, data map[string][]byte)

PopulateKV fills the Consul KV with data from a generic map.

func (*TestServer) SetKV 

func (s *TestServer) SetKV(t testing.TB, key string, val []byte)

SetKV sets an individual key in the K/V store.

func (*TestServer) SetKVString 

func (s *TestServer) SetKVString(t testing.TB, key string, val string)

SetKVString sets an individual key in the K/V store, but accepts a string instead of []byte.

func (*TestServer) Stop 

func (s *TestServer) Stop() error

Stop stops the test Consul server, and removes the Consul data directory once we are done.

func (*TestServer) WaitForActiveCARoot 

func (s *TestServer) WaitForActiveCARoot(t testing.TB)

WaitForActiveCARoot waits until the server can return a Connect CA meaning connect has completed bootstrapping and is ready to use.

func (*TestServer) WaitForLeader 

func (s *TestServer) WaitForLeader(t testing.TB)

waitForLeader waits for the Consul server's HTTP API to become available, and then waits for a known leader and an index of 2 or more to be observed to confirm leader election is done.

func (*TestServer) WaitForSerfCheck 

func (s *TestServer) WaitForSerfCheck(t testing.TB)

WaitForSerfCheck ensures we have a node with serfHealth check registered Behavior mirrors testrpc.WaitForTestAgent but avoids the dependency cycle in api pkg

func (*TestServer) WaitForServiceIntentions 

func (s *TestServer) WaitForServiceIntentions(t testing.TB)

WaitForServiceIntentions waits until the server can accept config entry kinds of service-intentions meaning any migration bootstrapping from pre-1.9 intentions has completed.

func (*TestServer) Wrap 

func (s *TestServer) Wrap(t testing.TB) *WrappedServer

Wrap wraps the test server in a `testing.t` for convenience.

For example, the following code snippets are equivalent. 

server.JoinLAN(t, "1.2.3.4")
server.Wrap(t).JoinLAN("1.2.3.4")

This is useful when you are calling multiple functions and save the wrapped value as another variable to reduce the inclusion of "t".

type TestServerConfig 

type TestServerConfig struct {
	NodeName            string                 `json:"node_name"`
	NodeID              string                 `json:"node_id"`
	NodeMeta            map[string]string      `json:"node_meta,omitempty"`
	Performance         *TestPerformanceConfig `json:"performance,omitempty"`
	Bootstrap           bool                   `json:"bootstrap,omitempty"`
	Server              bool                   `json:"server,omitempty"`
	DataDir             string                 `json:"data_dir,omitempty"`
	Datacenter          string                 `json:"datacenter,omitempty"`
	Segments            []TestNetworkSegment   `json:"segments"`
	DisableCheckpoint   bool                   `json:"disable_update_check"`
	LogLevel            string                 `json:"log_level,omitempty"`
	Bind                string                 `json:"bind_addr,omitempty"`
	Addresses           *TestAddressConfig     `json:"addresses,omitempty"`
	Ports               *TestPortConfig        `json:"ports,omitempty"`
	RaftProtocol        int                    `json:"raft_protocol,omitempty"`
	ACLMasterToken      string                 `json:"acl_master_token,omitempty"`
	ACLDatacenter       string                 `json:"acl_datacenter,omitempty"`
	PrimaryDatacenter   string                 `json:"primary_datacenter,omitempty"`
	ACLDefaultPolicy    string                 `json:"acl_default_policy,omitempty"`
	ACL                 TestACLs               `json:"acl,omitempty"`
	Encrypt             string                 `json:"encrypt,omitempty"`
	CAFile              string                 `json:"ca_file,omitempty"`
	CertFile            string                 `json:"cert_file,omitempty"`
	KeyFile             string                 `json:"key_file,omitempty"`
	VerifyIncoming      bool                   `json:"verify_incoming,omitempty"`
	VerifyIncomingRPC   bool                   `json:"verify_incoming_rpc,omitempty"`
	VerifyIncomingHTTPS bool                   `json:"verify_incoming_https,omitempty"`
	VerifyOutgoing      bool                   `json:"verify_outgoing,omitempty"`
	EnableScriptChecks  bool                   `json:"enable_script_checks,omitempty"`
	Connect             map[string]interface{} `json:"connect,omitempty"`
	EnableDebug         bool                   `json:"enable_debug,omitempty"`
	ReadyTimeout        time.Duration          `json:"-"`
	Stdout              io.Writer              `json:"-"`
	Stderr              io.Writer              `json:"-"`
	Args                []string               `json:"-"`
	ReturnPorts         func()                 `json:"-"`
}

TestServerConfig is the main server configuration struct.

type TestService 

type TestService struct {
	ID      string   `json:",omitempty"`
	Name    string   `json:",omitempty"`
	Tags    []string `json:",omitempty"`
	Address string   `json:",omitempty"`
	Port    int      `json:",omitempty"`
}

TestService is used to serialize a service definition.

type TestTokens 

type TestTokens struct {
	Master      string `json:"master,omitempty"`
	Replication string `json:"replication,omitempty"`
	AgentMaster string `json:"agent_master,omitempty"`
	Default     string `json:"default,omitempty"`
	Agent       string `json:"agent,omitempty"`
}

type TestingTB 

type TestingTB interface {
	Cleanup(func())
	Failed() bool
	Logf(format string, args ...interface{})
	Name() string
}

TestingTB is an interface that describes the implementation of the testing object. Using an interface that describes testing.TB instead of the actual implementation makes testutil usable in a wider variety of contexts (e.g. use with ginkgo : https://godoc.org/github.com/onsi/ginkgo#GinkgoT)

type WrappedServer 

type WrappedServer struct {
	// contains filtered or unexported fields
}

func (*WrappedServer) AddAddressableService 

func (w *WrappedServer) AddAddressableService(name, status, address string, port int, tags []string)

func (*WrappedServer) AddCheck 

func (w *WrappedServer) AddCheck(name, serviceID, status string)

func (*WrappedServer) AddService 

func (w *WrappedServer) AddService(name, status string, tags []string)

func (*WrappedServer) GetKV 

func (w *WrappedServer) GetKV(key string) []byte

func (*WrappedServer) GetKVString 

func (w *WrappedServer) GetKVString(key string) string

func (*WrappedServer) JoinLAN 

func (w *WrappedServer) JoinLAN(addr string)

func (*WrappedServer) JoinWAN 

func (w *WrappedServer) JoinWAN(addr string)

func (*WrappedServer) ListKV 

func (w *WrappedServer) ListKV(prefix string) []string

func (*WrappedServer) PopulateKV 

func (w *WrappedServer) PopulateKV(data map[string][]byte)

func (*WrappedServer) SetKV 

func (w *WrappedServer) SetKV(key string, val []byte)

func (*WrappedServer) SetKVString 

func (w *WrappedServer) SetKVString(key string, val string)

Source Files

View all Source files

Directories

Path Synopsis
Package retry provides support for repeating operations in tests.
 Package retry provides support for repeating operations in tests.

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