test(integration): add example app tests

This integration test will clone a repository, push the app and
test if they're up.

test/example_app_test.go

@@ -0,0 +1,135 @@
+package integration
+
+import (
+    "errors"
+    "fmt"
+    "net/http"
+    "os"
+    "os/exec"
+    "strings"
+    "testing"
+)
+
+const HOSTNAME string = "local.deisapp.com"
+
+type App struct {
+    Name        string // the name of the application
+    RepoURL     string // URL to the app's git repository
+}
+
+func TestDeployRuby(t *testing.T) {
+    err := deployApp(&App{
+        Name: "deis-test-1",
+        RepoURL: "https://github.com/deis/example-ruby-sinatra",
+    })
+
+    if err != nil {
+        t.Errorf("failed deploying example-ruby-sinatra: %v", err)
+    }
+}
+
+func TestDeployGo(t *testing.T) {
+    err := deployApp(&App{
+        Name: "deis-test-2",
+        RepoURL: "https://github.com/deis/example-go",
+    })
+
+    if err != nil {
+        t.Errorf("failed deploying example-go: %v", err)
+    }
+}
+
+func TestDeployPython(t *testing.T) {
+    err := deployApp(&App{
+        Name: "deis-test-3",
+        RepoURL: "https://github.com/deis/example-python-django",
+    })
+
+    if err != nil {
+        t.Errorf("failed deploying example-python-django: %v", err)
+    }
+}
+
+func TestDeployDockerfile(t * testing.T) {
+    err := deployApp(&App{
+        Name: "deis-test-4",
+        RepoURL: "https://github.com/deis/example-dockerfile-python",
+    })
+
+    if err != nil {
+        t.Errorf("failed deploying example-dockerfile-python: %v", err)
+    }
+}
+
+func deployApp(app *App) error {
+    var err error
+    var output []byte
+
+    err = cloneApp(app.RepoURL, app.Name)
+
+    if err != nil {
+        return errors.New("Could not clone repository " + app.RepoURL)
+    }
+
+    // switch context to the app repo
+    os.Chdir(app.Name)
+
+    output, _ = exec.Command(
+        "deis",
+        "apps:create",
+        app.Name,
+    ).CombinedOutput()
+
+    if !strings.Contains(string(output), "done, created " + app.Name) {
+        return errors.New("Received unexpected output for `deis apps:create`: " +
+            string(output))
+    }
+
+    output, _ = exec.Command(
+        "git",
+        "push",
+        "deis",
+        "master",
+    ).CombinedOutput()
+
+    if !strings.Contains(string(output), "deployed to Deis") {
+       return errors.New(
+            "Received unexpected output for `git push deis master`: '%s'" +
+            string(output))
+    }
+
+    _, err = http.Get(fmt.Sprintf("http://%s.%s", app.Name, HOSTNAME))
+
+    if err != nil {
+        return errors.New(fmt.Sprintf("Could not reach %s.%s: '%s'", app.Name, HOSTNAME, output))
+    }
+
+    err = destroyApp(app.Name)
+
+    // remove the test_app directory
+    os.Chdir("..")
+    os.RemoveAll(app.Name)
+
+    return err
+}
+
+func cloneApp(url string, path string) error {
+    // clone the example app to the test_app directory
+    _, err := exec.Command("git", "clone", url, path).CombinedOutput()
+    return err
+}
+
+func destroyApp(name string) error {
+    output, err := exec.Command(
+        "deis",
+        "apps:destroy",
+        fmt.Sprintf("--app=%s", name),
+        fmt.Sprintf("--confirm=%s", name),
+    ).CombinedOutput()
+
+    if !strings.Contains(string(output), "done") {
+        return errors.New(
+            "Received unexpected output for `deis apps:destroy`: " + string(output))
+    }
+    return err
+}