improve test coverage and add an api-server mock

container/client.go

@@ -44,7 +44,7 @@ func NewClient(pullImages bool) Client {
 }
 
 type dockerClient struct {
-	api        *dockerclient.Client
+	api        dockerclient.CommonAPIClient
 	pullImages bool
 }
 

container/client_test.go

@@ -1,15 +0,0 @@
-package container
-
-import (
-	. "github.com/onsi/ginkgo"
-	. "github.com/onsi/gomega"
-)
-
-var _ = Describe("the client", func() {
-	When("creating a new client", func() {
-		It("should return a client for the api", func() {
-			client := NewClient(false)
-			Expect(client).NotTo(BeNil())
-		})
-	})
-})

container/container_test.go

@@ -1,11 +1,13 @@
 package container
 
 import (
+	"github.com/containrrr/watchtower/container/mocks"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/container"
-	"testing"
+	cli "github.com/docker/docker/client"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	"testing"
 )
 
 func TestContainer(t *testing.T) {
@@ -14,7 +16,46 @@ func TestContainer(t *testing.T) {
 }
 
 var _ = Describe("the container", func() {
-
+	Describe("the client", func() {
+		var client Client
+		BeforeSuite(func() {
+			server := mocks.NewMockApiServer()
+			c, _ := cli.NewClientWithOpts(
+				cli.WithHost(server.URL),
+				cli.WithHTTPClient(server.Client(),
+				))
+			client = dockerClient{
+				api: c,
+				pullImages: false,
+			}
+		})
+		It("should return a client for the api", func() {
+			Expect(client).NotTo(BeNil())
+		})
+		When("listing containers without any filter", func() {
+			It("should return all available containers", func() {
+				containers, err := client.ListContainers(noFilter)
+				Expect(err).NotTo(HaveOccurred())
+				Expect(len(containers) == 2).To(BeTrue())
+			})
+		})
+		When("listing containers with a filter matching nothing", func() {
+			It("should return an empty array", func() {
+				filter := filterByNames([]string { "lollercoaster"}, noFilter)
+				containers, err := client.ListContainers(filter)
+				Expect(err).NotTo(HaveOccurred())
+				Expect(len(containers) == 0).To(BeTrue())
+			})
+		})
+		When("listing containers with a watchtower filter", func() {
+			It("should return only the watchtower container", func() {
+				containers, err := client.ListContainers(WatchtowerContainersFilter)
+				Expect(err).NotTo(HaveOccurred())
+				Expect(len(containers) == 1).To(BeTrue())
+				Expect(containers[0].ImageName()).To(Equal("containrrr/watchtower:latest"))
+			})
+		})
+	})
 	When("asked for metadata", func() {
 		var c *Container
 		BeforeEach(func() {
@@ -148,4 +189,4 @@ func mockContainerWithLabels(labels map[string]string) *Container {
 		},
 	}
 	return NewContainer(&content, nil)
-}
+}

container/mocks/ApiServer.go

@@ -0,0 +1,49 @@
+package mocks
+
+import (
+	"fmt"
+	"github.com/sirupsen/logrus"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"path/filepath"
+	"strings"
+)
+
+func NewMockApiServer() *httptest.Server {
+	return httptest.NewServer(http.HandlerFunc(
+		func(w http.ResponseWriter, r *http.Request) {
+			logrus.Debug("Mock server has received a HTTP call on ", r.URL)
+			var response = ""
+
+			if  isRequestFor("containers/json?limit=0", r) {
+				response = getMockJsonFromDisk("./mocks/data/containers.json")
+			} else if isRequestFor("ae8964ba86c7cd7522cf84e09781343d88e0e3543281c747d88b27e246578b65", r) {
+				response = getMockJsonFromDisk("./mocks/data/container_stopped.json")
+			} else if isRequestFor("b978af0b858aa8855cce46b628817d4ed58e58f2c4f66c9b9c5449134ed4c008", r) {
+				response = getMockJsonFromDisk("./mocks/data/container_running.json")
+			} else if isRequestFor("sha256:19d07168491a3f9e2798a9bed96544e34d57ddc4757a4ac5bb199dea896c87fd", r) {
+				response = getMockJsonFromDisk("./mocks/data/image01.json")
+			} else if isRequestFor("sha256:4dbc5f9c07028a985e14d1393e849ea07f68804c4293050d5a641b138db72daa", r) {
+				response = getMockJsonFromDisk("./mocks/data/image02.json")
+			}
+			fmt.Fprintln(w, response)
+		},
+	))
+}
+
+func isRequestFor(urlPart string, r *http.Request) bool {
+	return strings.Contains(r.URL.String(), urlPart)
+}
+
+func getMockJsonFromDisk(relPath string) string {
+	absPath, _ := filepath.Abs(relPath)
+	logrus.Error(absPath)
+	buf, err := ioutil.ReadFile(absPath)
+	if err != nil {
+		logrus.Error(err)
+		return ""
+	}
+	return string(buf)
+}
+

container/mocks/data/container_running.json

@@ -0,0 +1,233 @@
+{
+  "Id": "b978af0b858aa8855cce46b628817d4ed58e58f2c4f66c9b9c5449134ed4c008",
+  "Created": "2019-04-04T20:28:32.5710901Z",
+  "Path": "/portainer",
+  "Args": [],
+  "State": {
+    "Status": "running",
+    "Running": true,
+    "Paused": false,
+    "Restarting": false,
+    "OOMKilled": false,
+    "Dead": false,
+    "Pid": 3854,
+    "ExitCode": 0,
+    "Error": "",
+    "StartedAt": "2019-04-13T22:38:24.498745809Z",
+    "FinishedAt": "2019-04-13T22:38:18.486292076Z"
+  },
+  "Image": "sha256:19d07168491a3f9e2798a9bed96544e34d57ddc4757a4ac5bb199dea896c87fd",
+  "ResolvConfPath": "/var/lib/docker/containers/b978af0b858aa8855cce46b628817d4ed58e58f2c4f66c9b9c5449134ed4c008/resolv.conf",
+  "HostnamePath": "/var/lib/docker/containers/b978af0b858aa8855cce46b628817d4ed58e58f2c4f66c9b9c5449134ed4c008/hostname",
+  "HostsPath": "/var/lib/docker/containers/b978af0b858aa8855cce46b628817d4ed58e58f2c4f66c9b9c5449134ed4c008/hosts",
+  "LogPath": "/var/lib/docker/containers/b978af0b858aa8855cce46b628817d4ed58e58f2c4f66c9b9c5449134ed4c008/b978af0b858aa8855cce46b628817d4ed58e58f2c4f66c9b9c5449134ed4c008-json.log",
+  "Name": "/portainer",
+  "RestartCount": 0,
+  "Driver": "overlay2",
+  "Platform": "linux",
+  "MountLabel": "",
+  "ProcessLabel": "",
+  "AppArmorProfile": "",
+  "ExecIDs": null,
+  "HostConfig": {
+    "Binds": [
+      "portainer_data:/data",
+      "/var/run/docker.sock:/var/run/docker.sock"
+    ],
+    "ContainerIDFile": "",
+    "LogConfig": {
+      "Type": "json-file",
+      "Config": {}
+    },
+    "NetworkMode": "default",
+    "PortBindings": {
+      "9000/tcp": [
+        {
+          "HostIp": "",
+          "HostPort": "9000"
+        }
+      ]
+    },
+    "RestartPolicy": {
+      "Name": "always",
+      "MaximumRetryCount": 0
+    },
+    "AutoRemove": false,
+    "VolumeDriver": "",
+    "VolumesFrom": null,
+    "CapAdd": null,
+    "CapDrop": null,
+    "Dns": [],
+    "DnsOptions": [],
+    "DnsSearch": [],
+    "ExtraHosts": null,
+    "GroupAdd": null,
+    "IpcMode": "shareable",
+    "Cgroup": "",
+    "Links": null,
+    "OomScoreAdj": 0,
+    "PidMode": "",
+    "Privileged": false,
+    "PublishAllPorts": false,
+    "ReadonlyRootfs": false,
+    "SecurityOpt": null,
+    "UTSMode": "",
+    "UsernsMode": "",
+    "ShmSize": 67108864,
+    "Runtime": "runc",
+    "ConsoleSize": [
+      0,
+      0
+    ],
+    "Isolation": "",
+    "CpuShares": 0,
+    "Memory": 0,
+    "NanoCpus": 0,
+    "CgroupParent": "",
+    "BlkioWeight": 0,
+    "BlkioWeightDevice": [],
+    "BlkioDeviceReadBps": null,
+    "BlkioDeviceWriteBps": null,
+    "BlkioDeviceReadIOps": null,
+    "BlkioDeviceWriteIOps": null,
+    "CpuPeriod": 0,
+    "CpuQuota": 0,
+    "CpuRealtimePeriod": 0,
+    "CpuRealtimeRuntime": 0,
+    "CpusetCpus": "",
+    "CpusetMems": "",
+    "Devices": [],
+    "DeviceCgroupRules": null,
+    "DiskQuota": 0,
+    "KernelMemory": 0,
+    "MemoryReservation": 0,
+    "MemorySwap": 0,
+    "MemorySwappiness": null,
+    "OomKillDisable": false,
+    "PidsLimit": 0,
+    "Ulimits": null,
+    "CpuCount": 0,
+    "CpuPercent": 0,
+    "IOMaximumIOps": 0,
+    "IOMaximumBandwidth": 0,
+    "MaskedPaths": [
+      "/proc/asound",
+      "/proc/acpi",
+      "/proc/kcore",
+      "/proc/keys",
+      "/proc/latency_stats",
+      "/proc/timer_list",
+      "/proc/timer_stats",
+      "/proc/sched_debug",
+      "/proc/scsi",
+      "/sys/firmware"
+    ],
+    "ReadonlyPaths": [
+      "/proc/bus",
+      "/proc/fs",
+      "/proc/irq",
+      "/proc/sys",
+      "/proc/sysrq-trigger"
+    ]
+  },
+  "GraphDriver": {
+    "Data": {
+      "LowerDir": "/var/lib/docker/overlay2/99dedacb757cd8c70ccacbc4b57dd85cb34b1b6fcfd2fd1176332ce5dfa1d38c-init/diff:/var/lib/docker/overlay2/2e0c03c2476f5b4df855cb8b02a88f76d336d7e0becc3e5193906aaa760687fd/diff:/var/lib/docker/overlay2/6c3f44131f6f13c9ea1a99a1b24bf348f70ba3eef244f29202faef3a2216ac11/diff",
+      "MergedDir": "/var/lib/docker/overlay2/99dedacb757cd8c70ccacbc4b57dd85cb34b1b6fcfd2fd1176332ce5dfa1d38c/merged",
+      "UpperDir": "/var/lib/docker/overlay2/99dedacb757cd8c70ccacbc4b57dd85cb34b1b6fcfd2fd1176332ce5dfa1d38c/diff",
+      "WorkDir": "/var/lib/docker/overlay2/99dedacb757cd8c70ccacbc4b57dd85cb34b1b6fcfd2fd1176332ce5dfa1d38c/work"
+    },
+    "Name": "overlay2"
+  },
+  "Mounts": [
+    {
+      "Type": "volume",
+      "Name": "portainer_data",
+      "Source": "/var/lib/docker/volumes/portainer_data/_data",
+      "Destination": "/data",
+      "Driver": "local",
+      "Mode": "z",
+      "RW": true,
+      "Propagation": ""
+    },
+    {
+      "Type": "bind",
+      "Source": "/var/run/docker.sock",
+      "Destination": "/var/run/docker.sock",
+      "Mode": "",
+      "RW": true,
+      "Propagation": "rprivate"
+    }
+  ],
+  "Config": {
+    "Hostname": "822f0f2efd78",
+    "Domainname": "",
+    "User": "",
+    "AttachStdin": false,
+    "AttachStdout": false,
+    "AttachStderr": false,
+    "ExposedPorts": {
+      "9000/tcp": {}
+    },
+    "Tty": false,
+    "OpenStdin": false,
+    "StdinOnce": false,
+    "Env": [
+      "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+    ],
+    "Cmd": null,
+    "Image": "portainer/portainer:latest",
+    "Volumes": {
+      "/data": {}
+    },
+    "WorkingDir": "/",
+    "Entrypoint": [
+      "/portainer"
+    ],
+    "OnBuild": null,
+    "Labels": {}
+  },
+  "NetworkSettings": {
+    "Bridge": "",
+    "SandboxID": "8819e19588be798020f2d09e36a577c39a47809e68c2769a1525880c0bcd5b11",
+    "HairpinMode": false,
+    "LinkLocalIPv6Address": "",
+    "LinkLocalIPv6PrefixLen": 0,
+    "Ports": {
+      "9000/tcp": [
+        {
+          "HostIp": "0.0.0.0",
+          "HostPort": "9000"
+        }
+      ]
+    },
+    "SandboxKey": "/var/run/docker/netns/8819e19588be",
+    "SecondaryIPAddresses": null,
+    "SecondaryIPv6Addresses": null,
+    "EndpointID": "a8bcd737f27edb4d2955f7bce0c777bb2990b792a6b335b0727387624abe0702",
+    "Gateway": "172.17.0.1",
+    "GlobalIPv6Address": "",
+    "GlobalIPv6PrefixLen": 0,
+    "IPAddress": "172.17.0.2",
+    "IPPrefixLen": 16,
+    "IPv6Gateway": "",
+    "MacAddress": "02:42:ac:11:00:02",
+    "Networks": {
+      "bridge": {
+        "IPAMConfig": null,
+        "Links": null,
+        "Aliases": null,
+        "NetworkID": "9352796e0330dcf31ce3d44fae4b719304b8b3fd97b02ade3aefb8737251682b",
+        "EndpointID": "a8bcd737f27edb4d2955f7bce0c777bb2990b792a6b335b0727387624abe0702",
+        "Gateway": "172.17.0.1",
+        "IPAddress": "172.17.0.2",
+        "IPPrefixLen": 16,
+        "IPv6Gateway": "",
+        "GlobalIPv6Address": "",
+        "GlobalIPv6PrefixLen": 0,
+        "MacAddress": "02:42:ac:11:00:02",
+        "DriverOpts": null
+      }
+    }
+  }
+}

container/mocks/data/container_stopped.json

@@ -0,0 +1,205 @@
+{
+  "Id": "ae8964ba86c7cd7522cf84e09781343d88e0e3543281c747d88b27e246578b65",
+  "Created": "2019-04-10T19:51:22.245041005Z",
+  "Path": "/watchtower",
+  "Args": [],
+  "State": {
+    "Status": "exited",
+    "Running": false,
+    "Paused": false,
+    "Restarting": false,
+    "OOMKilled": false,
+    "Dead": false,
+    "Pid": 0,
+    "ExitCode": 1,
+    "Error": "",
+    "StartedAt": "2019-04-10T19:51:22.918972606Z",
+    "FinishedAt": "2019-04-10T19:52:14.265091583Z"
+  },
+  "Image": "sha256:4dbc5f9c07028a985e14d1393e849ea07f68804c4293050d5a641b138db72daa",
+  "ResolvConfPath": "/var/lib/docker/containers/ae8964ba86c7cd7522cf84e09781343d88e0e3543281c747d88b27e246578b65/resolv.conf",
+  "HostnamePath": "/var/lib/docker/containers/ae8964ba86c7cd7522cf84e09781343d88e0e3543281c747d88b27e246578b65/hostname",
+  "HostsPath": "/var/lib/docker/containers/ae8964ba86c7cd7522cf84e09781343d88e0e3543281c747d88b27e246578b65/hosts",
+  "LogPath": "/var/lib/docker/containers/ae8964ba86c7cd7522cf84e09781343d88e0e3543281c747d88b27e246578b65/ae8964ba86c7cd7522cf84e09781343d88e0e3543281c747d88b27e246578b65-json.log",
+  "Name": "/watchtower-test",
+  "RestartCount": 0,
+  "Driver": "overlay2",
+  "Platform": "linux",
+  "MountLabel": "",
+  "ProcessLabel": "",
+  "AppArmorProfile": "",
+  "ExecIDs": null,
+  "HostConfig": {
+    "Binds": [
+      "/var/run/docker.sock:/var/run/docker.sock"
+    ],
+    "ContainerIDFile": "",
+    "LogConfig": {
+      "Type": "json-file",
+      "Config": {}
+    },
+    "NetworkMode": "default",
+    "PortBindings": {},
+    "RestartPolicy": {
+      "Name": "no",
+      "MaximumRetryCount": 0
+    },
+    "AutoRemove": false,
+    "VolumeDriver": "",
+    "VolumesFrom": null,
+    "CapAdd": null,
+    "CapDrop": null,
+    "Dns": [],
+    "DnsOptions": [],
+    "DnsSearch": [],
+    "ExtraHosts": null,
+    "GroupAdd": null,
+    "IpcMode": "shareable",
+    "Cgroup": "",
+    "Links": null,
+    "OomScoreAdj": 0,
+    "PidMode": "",
+    "Privileged": false,
+    "PublishAllPorts": false,
+    "ReadonlyRootfs": false,
+    "SecurityOpt": null,
+    "UTSMode": "",
+    "UsernsMode": "",
+    "ShmSize": 67108864,
+    "Runtime": "runc",
+    "ConsoleSize": [
+      0,
+      0
+    ],
+    "Isolation": "",
+    "CpuShares": 0,
+    "Memory": 0,
+    "NanoCpus": 0,
+    "CgroupParent": "",
+    "BlkioWeight": 0,
+    "BlkioWeightDevice": [],
+    "BlkioDeviceReadBps": null,
+    "BlkioDeviceWriteBps": null,
+    "BlkioDeviceReadIOps": null,
+    "BlkioDeviceWriteIOps": null,
+    "CpuPeriod": 0,
+    "CpuQuota": 0,
+    "CpuRealtimePeriod": 0,
+    "CpuRealtimeRuntime": 0,
+    "CpusetCpus": "",
+    "CpusetMems": "",
+    "Devices": [],
+    "DeviceCgroupRules": null,
+    "DiskQuota": 0,
+    "KernelMemory": 0,
+    "MemoryReservation": 0,
+    "MemorySwap": 0,
+    "MemorySwappiness": null,
+    "OomKillDisable": false,
+    "PidsLimit": 0,
+    "Ulimits": null,
+    "CpuCount": 0,
+    "CpuPercent": 0,
+    "IOMaximumIOps": 0,
+    "IOMaximumBandwidth": 0,
+    "MaskedPaths": [
+      "/proc/asound",
+      "/proc/acpi",
+      "/proc/kcore",
+      "/proc/keys",
+      "/proc/latency_stats",
+      "/proc/timer_list",
+      "/proc/timer_stats",
+      "/proc/sched_debug",
+      "/proc/scsi",
+      "/sys/firmware"
+    ],
+    "ReadonlyPaths": [
+      "/proc/bus",
+      "/proc/fs",
+      "/proc/irq",
+      "/proc/sys",
+      "/proc/sysrq-trigger"
+    ]
+  },
+  "GraphDriver": {
+    "Data": {
+      "LowerDir": "/var/lib/docker/overlay2/9f6b91ea6e142835035d91123bbc7a05224dfa2abd4d020eac42f2ab420ccddc-init/diff:/var/lib/docker/overlay2/cdf82f50bc49177d0c17c24f3eaa29eba607b70cc6a081f77781b21c59a13eb8/diff:/var/lib/docker/overlay2/8108325ee844603c9b08d2772cf6e65dccf31dd5171f265078e5ed79a0ba3c0f/diff:/var/lib/docker/overlay2/e5e0cce6bf91b829a308424d99d7e56a33be3a11414ff5cdc48e762a1342b20f/diff",
+      "MergedDir": "/var/lib/docker/overlay2/9f6b91ea6e142835035d91123bbc7a05224dfa2abd4d020eac42f2ab420ccddc/merged",
+      "UpperDir": "/var/lib/docker/overlay2/9f6b91ea6e142835035d91123bbc7a05224dfa2abd4d020eac42f2ab420ccddc/diff",
+      "WorkDir": "/var/lib/docker/overlay2/9f6b91ea6e142835035d91123bbc7a05224dfa2abd4d020eac42f2ab420ccddc/work"
+    },
+    "Name": "overlay2"
+  },
+  "Mounts": [
+    {
+      "Type": "bind",
+      "Source": "/var/run/docker.sock",
+      "Destination": "/var/run/docker.sock",
+      "Mode": "",
+      "RW": true,
+      "Propagation": "rprivate"
+    }
+  ],
+  "Config": {
+    "Hostname": "ae8964ba86c7",
+    "Domainname": "",
+    "User": "",
+    "AttachStdin": false,
+    "AttachStdout": true,
+    "AttachStderr": true,
+    "Tty": false,
+    "OpenStdin": false,
+    "StdinOnce": false,
+    "Env": [
+      "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+    ],
+    "Cmd": null,
+    "Image": "containrrr/watchtower:latest",
+    "Volumes": null,
+    "WorkingDir": "",
+    "Entrypoint": [
+      "/watchtower"
+    ],
+    "OnBuild": null,
+    "Labels": {
+      "com.centurylinklabs.watchtower": "true"
+    }
+  },
+  "NetworkSettings": {
+    "Bridge": "",
+    "SandboxID": "05627d36c08ed994eebc44a2a8c9365a511756b55c500fb03fd5a14477cd4bf3",
+    "HairpinMode": false,
+    "LinkLocalIPv6Address": "",
+    "LinkLocalIPv6PrefixLen": 0,
+    "Ports": {},
+    "SandboxKey": "/var/run/docker/netns/05627d36c08e",
+    "SecondaryIPAddresses": null,
+    "SecondaryIPv6Addresses": null,
+    "EndpointID": "",
+    "Gateway": "",
+    "GlobalIPv6Address": "",
+    "GlobalIPv6PrefixLen": 0,
+    "IPAddress": "",
+    "IPPrefixLen": 0,
+    "IPv6Gateway": "",
+    "MacAddress": "",
+    "Networks": {
+      "bridge": {
+        "IPAMConfig": null,
+        "Links": null,
+        "Aliases": null,
+        "NetworkID": "8fcfd56fa9203bafa98510abb08bff66ad05bef5b6e97d158cbae3397e1e065e",
+        "EndpointID": "",
+        "Gateway": "",
+        "IPAddress": "",
+        "IPPrefixLen": 0,
+        "IPv6Gateway": "",
+        "GlobalIPv6Address": "",
+        "GlobalIPv6PrefixLen": 0,
+        "MacAddress": "",
+        "DriverOpts": null
+      }
+    }
+  }
+}

container/mocks/data/containers.json

@@ -0,0 +1,113 @@
+[
+  {
+    "Id": "ae8964ba86c7cd7522cf84e09781343d88e0e3543281c747d88b27e246578b65",
+    "Names": [
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+          "GlobalIPv6PrefixLen": 0,
+          "MacAddress": "02:42:ac:11:00:02",
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+    "Mounts": [
+      {
+        "Type": "volume",
+        "Name": "portainer_data",
+        "Source": "/var/lib/docker/volumes/portainer_data/_data",
+        "Destination": "/data",
+        "Driver": "local",
+        "Mode": "z",
+        "RW": true,
+        "Propagation": ""
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+      {
+        "Type": "bind",
+        "Source": "/var/run/docker.sock",
+        "Destination": "/var/run/docker.sock",
+        "Mode": "",
+        "RW": true,
+        "Propagation": "rprivate"
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container/mocks/data/image01.json

@@ -0,0 +1,99 @@
+{
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+  "RepoTags": [
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+      "/bin/sh",
+      "-c",
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+      "ENTRYPOINT [\"/portainer\"]"
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container/mocks/data/image02.json

@@ -0,0 +1,92 @@
+{
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+}