Rewrite bin/check in Go

1 files changed, 90 insertions, 0 deletions

diff --git a/go/internal/command/healthcheck/healthcheck_test.go b/go/internal/command/healthcheck/healthcheck_test.go
new file mode 100644
index 0000000..6c92ebc
--- /dev/null
+++ b/go/internal/command/healthcheck/healthcheck_test.go
@@ -0,0 +1,90 @@
+package healthcheck
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"gitlab.com/gitlab-org/gitlab-shell/go/internal/command/readwriter"
+	"gitlab.com/gitlab-org/gitlab-shell/go/internal/config"
+	"gitlab.com/gitlab-org/gitlab-shell/go/internal/gitlabnet/healthcheck"
+	"gitlab.com/gitlab-org/gitlab-shell/go/internal/gitlabnet/testserver"
+)
+
+var (
+	okResponse = &healthcheck.Response{
+		APIVersion:     "v4",
+		GitlabVersion:  "v12.0.0-ee",
+		GitlabRevision: "3b13818e8330f68625d80d9bf5d8049c41fbe197",
+		Redis:          true,
+	}
+
+	badRedisResponse = &healthcheck.Response{Redis: false}
+
+	okHandlers       = buildTestHandlers(200, okResponse)
+	badRedisHandlers = buildTestHandlers(200, badRedisResponse)
+	brokenHandlers   = buildTestHandlers(500, nil)
+)
+
+func buildTestHandlers(code int, rsp *healthcheck.Response) []testserver.TestRequestHandler {
+	return []testserver.TestRequestHandler{
+		{
+			Path: "/api/v4/internal/check",
+			Handler: func(w http.ResponseWriter, r *http.Request) {
+				w.WriteHeader(code)
+				if rsp != nil {
+					json.NewEncoder(w).Encode(rsp)
+				}
+			},
+		},
+	}
+}
+
+func TestExecute(t *testing.T) {
+	url, cleanup := testserver.StartSocketHttpServer(t, okHandlers)
+	defer cleanup()
+
+	buffer := &bytes.Buffer{}
+	cmd := &Command{
+		Config:     &config.Config{GitlabUrl: url},
+		ReadWriter: &readwriter.ReadWriter{Out: buffer},
+	}
+
+	err := cmd.Execute()
+
+	require.NoError(t, err)
+	require.Equal(t, "Internal API available: OK\nRedis available via internal API: OK\n", buffer.String())
+}
+
+func TestFailingRedisExecute(t *testing.T) {
+	url, cleanup := testserver.StartSocketHttpServer(t, badRedisHandlers)
+	defer cleanup()
+
+	buffer := &bytes.Buffer{}
+	cmd := &Command{
+		Config:     &config.Config{GitlabUrl: url},
+		ReadWriter: &readwriter.ReadWriter{Out: buffer},
+	}
+
+	err := cmd.Execute()
+	require.Error(t, err, "Redis available via internal API: FAILED")
+	require.Equal(t, "Internal API available: OK\n", buffer.String())
+}
+
+func TestFailingAPIExecute(t *testing.T) {
+	url, cleanup := testserver.StartSocketHttpServer(t, brokenHandlers)
+	defer cleanup()
+
+	buffer := &bytes.Buffer{}
+	cmd := &Command{
+		Config:     &config.Config{GitlabUrl: url},
+		ReadWriter: &readwriter.ReadWriter{Out: buffer},
+	}
+
+	err := cmd.Execute()
+	require.Empty(t, buffer.String())
+	require.EqualError(t, err, "Internal API available: FAILED - Internal API error (500)")
+}