feat: add mergeability checks to summary view

cmd/app/mergeability_checks_test.go

@@ -0,0 +1,119 @@
+package app
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/harrisoncramer/gitlab.nvim/cmd/app/git"
+	gitlab "gitlab.com/gitlab-org/api/client-go"
+)
+
+type fakeGraphQLClient struct {
+	err      error
+	jsonData []byte
+}
+
+func (f fakeGraphQLClient) Do(query gitlab.GraphQLQuery, response any, options ...gitlab.RequestOptionFunc) (*gitlab.Response, error) {
+	if f.err != nil {
+		return nil, f.err
+	}
+
+	// Actually unmarshal JSON into the response struct
+	if err := json.Unmarshal(f.jsonData, response); err != nil {
+		return nil, err
+	}
+
+	// if resp, ok := response.(mergeabilityChecksGraphQLResponse); ok {
+	// 	resp.Data.Project.MergeRequest.MergeabilityChecks = f.checks
+	// }
+
+	return makeResponse(http.StatusOK), nil
+}
+
+var testMergeabilityData = data{
+	projectInfo: &ProjectInfo{MergeId: 123},
+	gitInfo: &git.GitData{
+		BranchName:  "feature-branch",
+		Namespace:   "test-namespace",
+		ProjectName: "test-project",
+	},
+}
+
+func TestMergeabilityChecksHandler(t *testing.T) {
+	t.Run("Returns mergeability checks", func(t *testing.T) {
+		request := makeRequest(t, http.MethodGet, "/mr/mergeability_checks", nil)
+		client := fakeGraphQLClient{
+			jsonData: []byte(`{
+				"data": {
+					"project": {
+						"mergeRequest": {
+							"mergeabilityChecks": [
+								{"identifier": "CI_MUST_PASS", "status": "SUCCESS"},
+								{"identifier": "CONFLICT", "status": "FAILED"}
+							]
+						}
+					}
+				}
+			}`),
+		}
+		svc := middleware(
+			mergeabilityChecksService{testMergeabilityData, client},
+			withMethodCheck(http.MethodGet),
+		)
+
+		res := httptest.NewRecorder()
+		svc.ServeHTTP(res, request)
+
+		var data MergeabilityChecksResponse
+		json.Unmarshal(res.Body.Bytes(), &data)
+
+		assert(t, data.Message, "Mergeability checks retrieved")
+		assert(t, len(data.MergeabilityChecks), 2)
+		assert(t, data.MergeabilityChecks[0].Identifier, "CI_MUST_PASS")
+		assert(t, data.MergeabilityChecks[0].Status, "SUCCESS")
+		assert(t, data.MergeabilityChecks[1].Identifier, "CONFLICT")
+		assert(t, data.MergeabilityChecks[1].Status, "FAILED")
+	})
+
+	t.Run("Returns empty list when there are no checks", func(t *testing.T) {
+		request := makeRequest(t, http.MethodGet, "/mr/mergeability_checks", nil)
+		client := fakeGraphQLClient{
+			jsonData: []byte(`{
+				"data": {
+					"project": {
+						"mergeRequest": {
+							"mergeabilityChecks": []
+						}
+					}
+				}
+			}`),
+		}
+		svc := middleware(
+			mergeabilityChecksService{testMergeabilityData, client},
+			withMethodCheck(http.MethodGet),
+		)
+
+		res := httptest.NewRecorder()
+		svc.ServeHTTP(res, request)
+
+		var data MergeabilityChecksResponse
+		json.Unmarshal(res.Body.Bytes(), &data)
+
+		assert(t, data.Message, "Mergeability checks retrieved")
+		assert(t, len(data.MergeabilityChecks), 0)
+	})
+
+	t.Run("Handles errors from Gitlab client", func(t *testing.T) {
+		request := makeRequest(t, http.MethodGet, "/mr/mergeability_checks", nil)
+		client := fakeGraphQLClient{err: errorFromGitlab}
+		svc := middleware(
+			mergeabilityChecksService{testMergeabilityData, client},
+			withMethodCheck(http.MethodGet),
+		)
+		data, _ := getFailData(t, svc, request)
+		assert(t, data.Message, "Could not get mergeability checks")
+		assert(t, data.Details, "failed to fetch mergeability checks: "+errorFromGitlab.Error())
+	})
+}