Migrate container GET API tests from integration to integration-cli

An initial start to migration of the API tests from integration to
the integration-cli model.

Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>
(github: estesp)

integration-cli/docker_api_containers_test.go

@@ -0,0 +1,122 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"os/exec"
+	"testing"
+
+	"github.com/docker/docker/vendor/src/code.google.com/p/go/src/pkg/archive/tar"
+)
+
+func TestContainerApiGetAll(t *testing.T) {
+	startCount, err := getContainerCount()
+	if err != nil {
+		t.Fatalf("Cannot query container count: %v", err)
+	}
+
+	runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "true")
+	out, _, err := runCommandWithOutput(runCmd)
+	if err != nil {
+		t.Fatalf("Error on container creation: %v, output: %q", err, out)
+	}
+
+	testContainerId := stripTrailingCharacters(out)
+
+	body, err := sockRequest("GET", "/containers/json?all=1")
+	if err != nil {
+		t.Fatalf("GET all containers sockRequest failed: %v", err)
+	}
+
+	var inspectJSON []map[string]interface{}
+	if err = json.Unmarshal(body, &inspectJSON); err != nil {
+		t.Fatalf("unable to unmarshal response body: %v", err)
+	}
+
+	if len(inspectJSON) != startCount+1 {
+		t.Fatalf("Expected %d container(s), %d found (started with: %d)", startCount+1, len(inspectJSON), startCount)
+	}
+	if id, _ := inspectJSON[0]["Id"]; id != testContainerId {
+		t.Fatalf("Container ID mismatch. Expected: %s, received: %s\n", testContainerId, id)
+	}
+
+	deleteAllContainers()
+
+	logDone("container REST API - check GET json/all=1")
+}
+
+func TestContainerApiGetExport(t *testing.T) {
+	runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "touch", "/test")
+	out, _, err := runCommandWithOutput(runCmd)
+	if err != nil {
+		t.Fatalf("Error on container creation: %v, output: %q", err, out)
+	}
+
+	testContainerId := stripTrailingCharacters(out)
+
+	body, err := sockRequest("GET", "/containers/"+testContainerId+"/export")
+	if err != nil {
+		t.Fatalf("GET containers/export sockRequest failed: %v", err)
+	}
+
+	found := false
+	for tarReader := tar.NewReader(bytes.NewReader(body)); ; {
+		h, err := tarReader.Next()
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			t.Fatal(err)
+		}
+		if h.Name == "test" {
+			found = true
+			break
+		}
+	}
+
+	if !found {
+		t.Fatalf("The created test file has not been found in the exported image")
+	}
+	deleteAllContainers()
+
+	logDone("container REST API - check GET containers/export")
+}
+
+func TestContainerApiGetChanges(t *testing.T) {
+	runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "rm", "/etc/passwd")
+	out, _, err := runCommandWithOutput(runCmd)
+	if err != nil {
+		t.Fatalf("Error on container creation: %v, output: %q", err, out)
+	}
+
+	testContainerId := stripTrailingCharacters(out)
+
+	body, err := sockRequest("GET", "/containers/"+testContainerId+"/changes")
+	if err != nil {
+		t.Fatalf("GET containers/changes sockRequest failed: %v", err)
+	}
+
+	changes := []struct {
+		Kind int
+		Path string
+	}{}
+	if err = json.Unmarshal(body, &changes); err != nil {
+		t.Fatalf("unable to unmarshal response body: %v", err)
+	}
+
+	// Check the changelog for removal of /etc/passwd
+	success := false
+	for _, elem := range changes {
+		if elem.Path == "/etc/passwd" && elem.Kind == 2 {
+			success = true
+		}
+	}
+	if !success {
+		t.Fatalf("/etc/passwd has been removed but is not present in the diff")
+	}
+
+	deleteAllContainers()
+
+	logDone("container REST API - check GET containers/changes")
+}