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watchtower/pkg/container/container_test.go

281 lines
9.2 KiB
Go

package container
import (
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/go-connections/nat"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("the container", func() {
Describe("VerifyConfiguration", func() {
When("verifying a container with no image info", func() {
It("should return an error", func() {
c := mockContainerWithPortBindings()
c.imageInfo = nil
err := c.VerifyConfiguration()
Expect(err).To(Equal(errorNoImageInfo))
})
})
When("verifying a container with no container info", func() {
It("should return an error", func() {
c := mockContainerWithPortBindings()
c.containerInfo = nil
err := c.VerifyConfiguration()
Expect(err).To(Equal(errorInvalidConfig))
})
})
When("verifying a container with no config", func() {
It("should return an error", func() {
c := mockContainerWithPortBindings()
c.containerInfo.Config = nil
err := c.VerifyConfiguration()
Expect(err).To(Equal(errorInvalidConfig))
})
})
When("verifying a container with no host config", func() {
It("should return an error", func() {
c := mockContainerWithPortBindings()
c.containerInfo.HostConfig = nil
err := c.VerifyConfiguration()
Expect(err).To(Equal(errorInvalidConfig))
})
})
When("verifying a container with no port bindings", func() {
It("should not return an error", func() {
c := mockContainerWithPortBindings()
err := c.VerifyConfiguration()
Expect(err).ToNot(HaveOccurred())
})
})
When("verifying a container with port bindings, but no exposed ports", func() {
It("should return an error", func() {
c := mockContainerWithPortBindings("80/tcp")
c.containerInfo.Config.ExposedPorts = nil
err := c.VerifyConfiguration()
Expect(err).To(Equal(errorNoExposedPorts))
})
})
When("verifying a container with port bindings and exposed ports is non-nil", func() {
It("should return an error", func() {
c := mockContainerWithPortBindings("80/tcp")
c.containerInfo.Config.ExposedPorts = map[nat.Port]struct{}{"80/tcp": {}}
err := c.VerifyConfiguration()
Expect(err).ToNot(HaveOccurred())
})
})
})
When("asked for metadata", func() {
var c *Container
BeforeEach(func() {
c = mockContainerWithLabels(map[string]string{
"com.centurylinklabs.watchtower.enable": "true",
"com.centurylinklabs.watchtower": "true",
})
})
It("should return its name on calls to .Name()", func() {
name := c.Name()
Expect(name).To(Equal("test-containrrr"))
Expect(name).NotTo(Equal("wrong-name"))
})
It("should return its ID on calls to .ID()", func() {
id := c.ID()
Expect(id).To(BeEquivalentTo("container_id"))
Expect(id).NotTo(BeEquivalentTo("wrong-id"))
})
It("should return true, true if enabled on calls to .Enabled()", func() {
enabled, exists := c.Enabled()
Expect(enabled).To(BeTrue())
Expect(enabled).NotTo(BeFalse())
Expect(exists).To(BeTrue())
Expect(exists).NotTo(BeFalse())
})
It("should return false, true if present but not true on calls to .Enabled()", func() {
c = mockContainerWithLabels(map[string]string{"com.centurylinklabs.watchtower.enable": "false"})
enabled, exists := c.Enabled()
Expect(enabled).To(BeFalse())
Expect(enabled).NotTo(BeTrue())
Expect(exists).To(BeTrue())
Expect(exists).NotTo(BeFalse())
})
It("should return false, false if not present on calls to .Enabled()", func() {
c = mockContainerWithLabels(map[string]string{"lol": "false"})
enabled, exists := c.Enabled()
Expect(enabled).To(BeFalse())
Expect(enabled).NotTo(BeTrue())
Expect(exists).To(BeFalse())
Expect(exists).NotTo(BeTrue())
})
It("should return false, false if present but not parsable .Enabled()", func() {
c = mockContainerWithLabels(map[string]string{"com.centurylinklabs.watchtower.enable": "falsy"})
enabled, exists := c.Enabled()
Expect(enabled).To(BeFalse())
Expect(enabled).NotTo(BeTrue())
Expect(exists).To(BeFalse())
Expect(exists).NotTo(BeTrue())
})
When("checking if its a watchtower instance", func() {
It("should return true if the label is set to true", func() {
isWatchtower := c.IsWatchtower()
Expect(isWatchtower).To(BeTrue())
})
It("should return false if the label is present but set to false", func() {
c = mockContainerWithLabels(map[string]string{"com.centurylinklabs.watchtower": "false"})
isWatchtower := c.IsWatchtower()
Expect(isWatchtower).To(BeFalse())
})
It("should return false if the label is not present", func() {
c = mockContainerWithLabels(map[string]string{"funny.label": "false"})
isWatchtower := c.IsWatchtower()
Expect(isWatchtower).To(BeFalse())
})
It("should return false if there are no labels", func() {
c = mockContainerWithLabels(map[string]string{})
isWatchtower := c.IsWatchtower()
Expect(isWatchtower).To(BeFalse())
})
})
When("fetching the custom stop signal", func() {
It("should return the signal if its set", func() {
c = mockContainerWithLabels(map[string]string{
"com.centurylinklabs.watchtower.stop-signal": "SIGKILL",
})
stopSignal := c.StopSignal()
Expect(stopSignal).To(Equal("SIGKILL"))
})
It("should return an empty string if its not set", func() {
c = mockContainerWithLabels(map[string]string{})
stopSignal := c.StopSignal()
Expect(stopSignal).To(Equal(""))
})
})
When("fetching the image name", func() {
When("the zodiac label is present", func() {
It("should fetch the image name from it", func() {
c = mockContainerWithLabels(map[string]string{
"com.centurylinklabs.zodiac.original-image": "the-original-image",
})
imageName := c.ImageName()
Expect(imageName).To(Equal(imageName))
})
})
It("should return the image name", func() {
name := "image-name:3"
c = mockContainerWithImageName(name)
imageName := c.ImageName()
Expect(imageName).To(Equal(name))
})
It("should assume latest if no tag is supplied", func() {
name := "image-name"
c = mockContainerWithImageName(name)
imageName := c.ImageName()
Expect(imageName).To(Equal(name + ":latest"))
})
})
When("fetching container links", func() {
When("the depends on label is present", func() {
It("should fetch depending containers from it", func() {
c = mockContainerWithLabels(map[string]string{
"com.centurylinklabs.watchtower.depends-on": "postgres",
})
links := c.Links()
Expect(links).To(SatisfyAll(ContainElement("postgres"), HaveLen(1)))
})
It("should fetch depending containers if there are many", func() {
c = mockContainerWithLabels(map[string]string{
"com.centurylinklabs.watchtower.depends-on": "postgres,redis",
})
links := c.Links()
Expect(links).To(SatisfyAll(ContainElement("postgres"), ContainElement("redis"), HaveLen(2)))
})
It("should fetch depending containers if label is blank", func() {
c = mockContainerWithLabels(map[string]string{
"com.centurylinklabs.watchtower.depends-on": "",
})
links := c.Links()
Expect(links).To(HaveLen(0))
})
})
When("the depends on label is not present", func() {
It("should fetch depending containers from host config links", func() {
c = mockContainerWithLinks([]string{
"redis:test-containrrr",
"postgres:test-containrrr",
})
links := c.Links()
Expect(links).To(SatisfyAll(ContainElement("redis"), ContainElement("postgres"), HaveLen(2)))
})
})
})
})
})
func mockContainerWithPortBindings(portBindingSources ...string) *Container {
mockContainer := mockContainerWithLabels(nil)
mockContainer.imageInfo = &types.ImageInspect{}
hostConfig := &container.HostConfig{
PortBindings: nat.PortMap{},
}
for _, pbs := range portBindingSources {
hostConfig.PortBindings[nat.Port(pbs)] = []nat.PortBinding{}
}
mockContainer.containerInfo.HostConfig = hostConfig
return mockContainer
}
func mockContainerWithImageName(name string) *Container {
mockContainer := mockContainerWithLabels(nil)
mockContainer.containerInfo.Config.Image = name
return mockContainer
}
func mockContainerWithLinks(links []string) *Container {
content := types.ContainerJSON{
ContainerJSONBase: &types.ContainerJSONBase{
ID: "container_id",
Image: "image",
Name: "test-containrrr",
HostConfig: &container.HostConfig{
Links: links,
},
},
Config: &container.Config{
Labels: map[string]string{},
},
}
return NewContainer(&content, nil)
}
func mockContainerWithLabels(labels map[string]string) *Container {
content := types.ContainerJSON{
ContainerJSONBase: &types.ContainerJSONBase{
ID: "container_id",
Image: "image",
Name: "test-containrrr",
},
Config: &container.Config{
Labels: labels,
},
}
return NewContainer(&content, nil)
}
func newClientNoAPI(pullImages, includeStopped, reviveStopped, removeVolumes, includeRestarting bool, warnOnHeadFailed string) Client {
return dockerClient{
api: nil,
pullImages: pullImages,
removeVolumes: removeVolumes,
includeStopped: includeStopped,
reviveStopped: reviveStopped,
includeRestarting: includeRestarting,
warnOnHeadFailed: warnOnHeadFailed,
}
}