Remove cirros.tar.gz completely

Since `cirros.tar.gz` only existed to test `docker import`'s display and
presence in `docker events`, we can instead just use `docker export`
piped directly to `docker import` to achieve the same goal without
another external dependency besides `busybox` (which we already have).

While I was at it, I updated `TestImportDisplay` to also test that the
imported image actually runs successfully as well (so we're testing the
full import round-trip).

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>

Dockerfile

@@ -110,9 +110,6 @@ RUN gem install --no-rdoc --no-ri fpm --version 1.3.2
 # Get the "busybox" image source so we can build locally instead of pulling
 RUN git clone -b buildroot-2014.02 https://github.com/jpetazzo/docker-busybox.git /docker-busybox
 
-# Get the "cirros" image source so we can import it instead of fetching it during tests
-RUN curl -sSL -o /cirros.tar.gz https://github.com/ewindisch/docker-cirros/raw/1cded459668e8b9dbf4ef976c94c05add9bbd8e9/cirros-0.3.0-x86_64-lxc.tar.gz
-
 # Install registry
 ENV REGISTRY_COMMIT c448e0416925a9876d5576e412703c9b8b865e19
 RUN set -x \

integration-cli/docker_cli_events_test.go

@@ -206,18 +206,18 @@ func TestEventsImagePull(t *testing.T) {
 func TestEventsImageImport(t *testing.T) {
 	since := time.Now().Unix()
 
-	defer deleteImages("cirros")
-
-	server, err := fileServer(map[string]string{
-		"/cirros.tar.gz": "/cirros.tar.gz",
-	})
+	runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "true")
+	out, _, err := runCommandWithOutput(runCmd)
 	if err != nil {
-		t.Fatal(err)
+		t.Fatal("failed to create a container", out, err)
 	}
-	defer server.Close()
-	fileURL := fmt.Sprintf("%s/cirros.tar.gz", server.URL)
-	importCmd := exec.Command(dockerBinary, "import", fileURL, "cirros")
-	out, _, err := runCommandWithOutput(importCmd)
+	cleanedContainerID := stripTrailingCharacters(out)
+	defer deleteContainer(cleanedContainerID)
+
+	out, _, err = runCommandPipelineWithOutput(
+		exec.Command(dockerBinary, "export", cleanedContainerID),
+		exec.Command(dockerBinary, "import", "-"),
+	)
 	if err != nil {
 		t.Errorf("import failed with errors: %v, output: %q", err, out)
 	}

integration-cli/docker_cli_import_test.go

@@ -1,32 +1,43 @@
 package main
 
 import (
-	"fmt"
 	"os/exec"
 	"strings"
 	"testing"
 )
 
 func TestImportDisplay(t *testing.T) {
-	server, err := fileServer(map[string]string{
-		"/cirros.tar.gz": "/cirros.tar.gz",
-	})
+	runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "true")
+	out, _, err := runCommandWithOutput(runCmd)
 	if err != nil {
-		t.Fatal(err)
+		t.Fatal("failed to create a container", out, err)
 	}
-	defer server.Close()
-	fileURL := fmt.Sprintf("%s/cirros.tar.gz", server.URL)
-	importCmd := exec.Command(dockerBinary, "import", fileURL, "cirros")
-	out, _, err := runCommandWithOutput(importCmd)
+	cleanedContainerID := stripTrailingCharacters(out)
+	defer deleteContainer(cleanedContainerID)
+
+	out, _, err = runCommandPipelineWithOutput(
+		exec.Command(dockerBinary, "export", cleanedContainerID),
+		exec.Command(dockerBinary, "import", "-"),
+	)
 	if err != nil {
 		t.Errorf("import failed with errors: %v, output: %q", err, out)
 	}
 
-	if n := strings.Count(out, "\n"); n != 2 {
-		t.Fatalf("display is messed up: %d '\\n' instead of 2", n)
+	if n := strings.Count(out, "\n"); n != 1 {
+		t.Fatalf("display is messed up: %d '\\n' instead of 1:\n%s", n, out)
+	}
+	image := strings.TrimSpace(out)
+	defer deleteImages(image)
+
+	runCmd = exec.Command(dockerBinary, "run", "--rm", image, "true")
+	out, _, err = runCommandWithOutput(runCmd)
+	if err != nil {
+		t.Fatal("failed to create a container", out, err)
 	}
 
-	deleteImages("cirros")
+	if out != "" {
+		t.Fatalf("command output should've been nothing, was %q", out)
+	}
 
-	logDone("import - cirros was imported and display is fine")
+	logDone("import - display is fine, imported image runs")
 }