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How to use ShouldBuildImage method of testcontainers Package

Best Testcontainers-go code snippet using testcontainers.ShouldBuildImage

docker.go

Source:docker.go

...671		return nil, err672	}673	var tag string674	var platform *specs.Platform675	if req.ShouldBuildImage() {676		tag, err = p.BuildImage(ctx, &req)677		if err != nil {678			return nil, err679		}680	} else {681		tag = req.Image682		if req.ImagePlatform != "" {683			p, err := platforms.Parse(req.ImagePlatform)684			if err != nil {685				return nil, fmt.Errorf("invalid platform %s: %w", req.ImagePlatform, err)686			}687			platform = &p688		}689		var shouldPullImage bool690		if req.AlwaysPullImage {691			shouldPullImage = true // If requested always attempt to pull image692		} else {693			image, _, err := p.client.ImageInspectWithRaw(ctx, tag)694			if err != nil {695				if client.IsErrNotFound(err) {696					shouldPullImage = true697				} else {698					return nil, err699				}700			}701			if platform != nil && (image.Architecture != platform.Architecture || image.Os != platform.OS) {702				shouldPullImage = true703			}704		}705		if shouldPullImage {706			pullOpt := types.ImagePullOptions{707				Platform: req.ImagePlatform, // may be empty708			}709			if req.RegistryCred != "" {710				pullOpt.RegistryAuth = req.RegistryCred711			}712			if err := p.attemptToPullImage(ctx, tag, pullOpt); err != nil {713				return nil, err714			}715		}716	}717	dockerInput := &container.Config{718		Entrypoint:   req.Entrypoint,719		Image:        tag,720		Env:          env,721		ExposedPorts: exposedPortSet,722		Labels:       req.Labels,723		Cmd:          req.Cmd,724		Hostname:     req.Hostname,725		User:         req.User,726	}727	// prepare mounts728	mounts := mapToDockerMounts(req.Mounts)729	hostConfig := &container.HostConfig{730		ExtraHosts:   req.ExtraHosts,731		PortBindings: exposedPortMap,732		Mounts:       mounts,733		Tmpfs:        req.Tmpfs,734		AutoRemove:   req.AutoRemove,735		Privileged:   req.Privileged,736		NetworkMode:  req.NetworkMode,737		Resources:    req.Resources,738	}739	endpointConfigs := map[string]*network.EndpointSettings{}740	// #248: Docker allows only one network to be specified during container creation741	// If there is more than one network specified in the request container should be attached to them742	// once it is created. We will take a first network if any specified in the request and use it to create container743	if len(req.Networks) > 0 {744		attachContainerTo := req.Networks[0]745		nw, err := p.GetNetwork(ctx, NetworkRequest{746			Name: attachContainerTo,747		})748		if err == nil {749			endpointSetting := network.EndpointSettings{750				Aliases:   req.NetworkAliases[attachContainerTo],751				NetworkID: nw.ID,752			}753			endpointConfigs[attachContainerTo] = &endpointSetting754		}755	}756	networkingConfig := network.NetworkingConfig{757		EndpointsConfig: endpointConfigs,758	}759	resp, err := p.client.ContainerCreate(ctx, dockerInput, hostConfig, &networkingConfig, platform, req.Name)760	if err != nil {761		return nil, err762	}763	// #248: If there is more than one network specified in the request attach newly created container to them one by one764	if len(req.Networks) > 1 {765		for _, n := range req.Networks[1:] {766			nw, err := p.GetNetwork(ctx, NetworkRequest{767				Name: n,768			})769			if err == nil {770				endpointSetting := network.EndpointSettings{771					Aliases: req.NetworkAliases[n],772				}773				err = p.client.NetworkConnect(ctx, nw.ID, resp.ID, &endpointSetting)774				if err != nil {775					return nil, err776				}777			}778		}779	}780	c := &DockerContainer{781		ID:                resp.ID,782		WaitingFor:        req.WaitingFor,783		Image:             tag,784		imageWasBuilt:     req.ShouldBuildImage(),785		sessionID:         sessionID,786		provider:          p,787		terminationSignal: termSignal,788		skipReaper:        req.SkipReaper,789		stopProducer:      make(chan bool),790		logger:            p.Logger,791	}792	return c, nil793}794// attemptToPullImage tries to pull the image while respecting the ctx cancellations.795// Besides, if the image cannot be pulled due to ErrorNotFound then no need to retry but terminate immediately.796func (p *DockerProvider) attemptToPullImage(ctx context.Context, tag string, pullOpt types.ImagePullOptions) error {797	var (798		err  error...

container.go

Source:container.go

...55type ImageBuildInfo interface {56	GetContext() (io.Reader, error)   // the path to the build context57	GetDockerfile() string            // the relative path to the Dockerfile, including the fileitself58	ShouldPrintBuildLog() bool        // allow build log to be printed to stdout59	ShouldBuildImage() bool           // return true if the image needs to be built60	GetBuildArgs() map[string]*string // return the environment args used to build the from Dockerfile61}62// FromDockerfile represents the parameters needed to build an image from a Dockerfile63// rather than using a pre-built one64type FromDockerfile struct {65	Context        string             // the path to the context of of the docker build66	ContextArchive io.Reader          // the tar archive file to send to docker that contains the build context67	Dockerfile     string             // the path from the context to the Dockerfile for the image, defaults to "Dockerfile"68	BuildArgs      map[string]*string // enable user to pass build args to docker daemon69	PrintBuildLog  bool               // enable user to print build log70}71// ContainerRequest represents the parameters used to get a running container72type ContainerRequest struct {73	FromDockerfile74	Image           string75	Entrypoint      []string76	Env             map[string]string77	ExposedPorts    []string // allow specifying protocol info78	Cmd             []string79	Labels          map[string]string80	Mounts          ContainerMounts81	Tmpfs           map[string]string82	RegistryCred    string83	WaitingFor      wait.Strategy84	Name            string // for specifying container name85	Hostname        string86	ExtraHosts      []string87	Privileged      bool                // for starting privileged container88	Networks        []string            // for specifying network names89	NetworkAliases  map[string][]string // for specifying network aliases90	NetworkMode     container.NetworkMode91	Resources       container.Resources92	User            string // for specifying uid:gid93	SkipReaper      bool   // indicates whether we skip setting up a reaper for this94	ReaperImage     string // alternative reaper image95	AutoRemove      bool   // if set to true, the container will be removed from the host when stopped96	AlwaysPullImage bool   // Always pull image97	ImagePlatform   string // ImagePlatform describes the platform which the image runs on.98}99type (100	// ProviderType is an enum for the possible providers101	ProviderType int102	// GenericProviderOptions defines options applicable to all providers103	GenericProviderOptions struct {104		Logger Logging105	}106	// GenericProviderOption defines a common interface to modify GenericProviderOptions107	// These options can be passed to GetProvider in a variadic way to customize the returned GenericProvider instance108	GenericProviderOption interface {109		ApplyGenericTo(opts *GenericProviderOptions)110	}111	// GenericProviderOptionFunc is a shorthand to implement the GenericProviderOption interface112	GenericProviderOptionFunc func(opts *GenericProviderOptions)113)114func (f GenericProviderOptionFunc) ApplyGenericTo(opts *GenericProviderOptions) {115	f(opts)116}117// possible provider types118const (119	ProviderDocker ProviderType = iota // Docker is default = 0120)121// GetProvider provides the provider implementation for a certain type122func (t ProviderType) GetProvider(opts ...GenericProviderOption) (GenericProvider, error) {123	opt := &GenericProviderOptions{124		Logger: Logger,125	}126	for _, o := range opts {127		o.ApplyGenericTo(opt)128	}129	switch t {130	case ProviderDocker:131		provider, err := NewDockerProvider(Generic2DockerOptions(opts...)...)132		if err != nil {133			return nil, fmt.Errorf("%w, failed to create Docker provider", err)134		}135		return provider, nil136	}137	return nil, errors.New("unknown provider")138}139// Validate ensures that the ContainerRequest does not have invalid parameters configured to it140// ex. make sure you are not specifying both an image as well as a context141func (c *ContainerRequest) Validate() error {142	validationMethods := []func() error{143		c.validateContextAndImage,144		c.validateContextOrImageIsSpecified,145		c.validateMounts,146	}147	var err error148	for _, validationMethod := range validationMethods {149		err = validationMethod()150		if err != nil {151			return err152		}153	}154	return nil155}156// GetContext retrieve the build context for the request157func (c *ContainerRequest) GetContext() (io.Reader, error) {158	if c.ContextArchive != nil {159		return c.ContextArchive, nil160	}161	buildContext, err := archive.TarWithOptions(c.Context, &archive.TarOptions{})162	if err != nil {163		return nil, err164	}165	return buildContext, nil166}167// GetBuildArgs returns the env args to be used when creating from Dockerfile168func (c *ContainerRequest) GetBuildArgs() map[string]*string {169	return c.FromDockerfile.BuildArgs170}171// GetDockerfile returns the Dockerfile from the ContainerRequest, defaults to "Dockerfile"172func (c *ContainerRequest) GetDockerfile() string {173	f := c.FromDockerfile.Dockerfile174	if f == "" {175		return "Dockerfile"176	}177	return f178}179func (c *ContainerRequest) ShouldBuildImage() bool {180	return c.FromDockerfile.Context != "" || c.FromDockerfile.ContextArchive != nil181}182func (c *ContainerRequest) ShouldPrintBuildLog() bool {183	return c.FromDockerfile.PrintBuildLog184}185func (c *ContainerRequest) validateContextAndImage() error {186	if c.FromDockerfile.Context != "" && c.Image != "" {187		return errors.New("you cannot specify both an Image and Context in a ContainerRequest")188	}189	return nil190}191func (c *ContainerRequest) validateContextOrImageIsSpecified() error {192	if c.FromDockerfile.Context == "" && c.FromDockerfile.ContextArchive == nil && c.Image == "" {193		return errors.New("you must specify either a build context or an image")...

ShouldBuildImage

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"80/tcp"},6		WaitingFor:   wait.ForListeningPort("80/tcp"),7	}8	if testcontainers.ShouldBuildImage(ctx, req) {9		fmt.Println("Image is not present locally")10	} else {11		fmt.Println("Image is present locally")12	}13}

ShouldBuildImage

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"3306/tcp"},6		WaitingFor:   wait.ForListeningPort("3306/tcp"),7	}8	mysql, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		panic(err)12	}13	defer mysql.Terminate(ctx)14	fmt.Println("MySQL container is up and running!")15}

ShouldBuildImage

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"80/tcp"},6		WaitingFor:   wait.ForListeningPort("80/tcp"),7	}8	provider, err := testcontainers.NewDockerProvider()9	if err != nil {10		log.Fatal(err)11	}12	shouldBuild, err := provider.ShouldBuildImage(ctx, req)13	if err != nil {14		log.Fatal(err)15	}16	fmt.Println(shouldBuild)17	provider.StartContainer(ctx, req)18	provider.StopContainer(ctx, req)19	provider.RemoveContainer(ctx, req)20	provider.RemoveImage(ctx, req)21}22import (23func main() {24	ctx := context.Background()25	req := testcontainers.ContainerRequest{26		ExposedPorts: []string{"80/tcp"},27		WaitingFor:   wait.ForListeningPort("80/tcp"),28	}

ShouldBuildImage

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		Cmd:          []string{"echo", "hello world"},6		ExposedPorts: []string{"80/tcp"},7		WaitingFor:   wait.ForLog("hello world"),8	}9	provider, err := testcontainers.NewDockerProvider()10	if err != nil {11		panic(err)12	}13	exists, err := provider.ShouldBuildImage(ctx, req)14	if err != nil {15		panic(err)16	}17	fmt.Println(exists)18	exists, err = provider.ShouldBuildImage(ctx, req)19	if err != nil {20		panic(err)21	}22	fmt.Println(exists)23	exists, err = provider.ShouldBuildImage(ctx, req)24	if err != nil {25		panic(err)26	}

ShouldBuildImage

Using AI Code Generation

1import (2func main() {3	req := testcontainers.ContainerRequest{4		ExposedPorts: []string{"80/tcp"},5		WaitingFor:   wait.ForLog("Starting nginx"),6	}7	ctx := context.Background()8	provider, _ := testcontainers.NewDockerProvider()9	provider.ShouldPullImage(ctx, req)10}

ShouldBuildImage

Using AI Code Generation

1func TestShouldBuildImage(t *testing.T) {2    ctx := context.Background()3    req := testcontainers.ContainerRequest{4        Cmd:   []string{"echo", "hello world"},5    }6    resp, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{7    })8    if err != nil {9        t.Fatal(err)10    }11    defer resp.Terminate(ctx)12    log.Println("Container ID: ", resp.GetContainerID())13    log.Println("Container IP: ", resp.GetContainerIP())14    log.Println("Container Name: ", resp.GetContainerName())15    log.Println("Container Host: ", resp.GetHost())16}17func TestShouldBuildImage(t *testing.T) {18    ctx := context.Background()19    req := testcontainers.ContainerRequest{20        Cmd:   []string{"echo", "hello world"},21    }22    resp, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{23    })24    if err != nil {25        t.Fatal(err)26    }27    defer resp.Terminate(ctx)28    log.Println("Container ID: ", resp.GetContainerID())29    log.Println("Container IP: ", resp.GetContainerIP())30    log.Println("Container Name: ", resp.GetContainerName())31    log.Println("Container Host: ", resp.GetHost())32}33func TestShouldBuildImage(t *testing.T) {34    ctx := context.Background()35    req := testcontainers.ContainerRequest{36        Cmd:   []string{"echo", "hello world"},37    }38    resp, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{39    })40    if err != nil {41        t.Fatal(err)42    }43    defer resp.Terminate(ctx)44    log.Println("Container ID: ", resp.GetContainerID())45    log.Println("Container IP: ", resp.GetContainerIP())46    log.Println("Container Name: ", resp.GetContainerName())47    log.Println("Container Host: ", resp.GetHost())

ShouldBuildImage

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	req := testcontainers.ContainerRequest{5		ExposedPorts: []string{"80/tcp"},6		WaitingFor:   wait.ForLog("listening on IPv4 address"),7	}8	container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9	})10	if err != nil {11		log.Fatal(err)12	}13	defer container.Terminate(ctx)14	ip, err := container.Host(ctx)15	if err != nil {16		log.Fatal(err)17	}18	port, err := container.MappedPort(ctx, "80")19	if err != nil {20		log.Fatal(err)21	}22	fmt.Println(url)23}24import (

ShouldBuildImage

Using AI Code Generation

1import (2func main() {3    ctx := context.Background()4    req := testcontainers.ContainerRequest{5        Cmd:          []string{"echo", "hello world"},6        WaitingFor:   wait.ForLog("hello world"),7    }8    container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9    })10    if err != nil {11        panic(err)12    }13    id, err := container.ContainerID(ctx)14    if err != nil {15        panic(err)16    }

ShouldBuildImage

Using AI Code Generation

1func TestShouldBuildImage(t *testing.T) {2	ctx := context.Background()3	cli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())4	if err != nil {5		panic(err)6	}7	tc := testcontainers.NewTestContainer(ctx, testcontainers.GenericContainerRequest{8		ContainerRequest: dockercontainer.ContainerRequest{9			ExposedPorts: []string{"80/tcp"},10			HostConfig: dockercontainer.HostConfig{11				PortBindings: nat.PortMap{12					"80/tcp": []nat.PortBinding{13						{

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