package main

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"reflect"
	"strings"
	"testing"
	"time"
)

func TestListBranchesPaginatesAndMarksTheDefaultBranch(t *testing.T) {
	requests := 0
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		requests++
		var request graphQLRequest
		if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
			t.Fatal(err)
		}
		if !strings.Contains(request.Query, "query RepositoryBranches") {
			t.Fatalf("unexpected query: %s", request.Query)
		}
		if requests == 1 {
			if request.Variables["after"] != nil {
				t.Fatalf("first cursor = %#v", request.Variables["after"])
			}
			_, _ = w.Write([]byte(`{"data":{"repository":{
				"defaultBranchRef":{"name":"main"},
				"refs":{"pageInfo":{"hasNextPage":true,"endCursor":"next"},"nodes":[
					{"name":"feature/old","target":{"committedDate":"2024-01-01T00:00:00Z"}},
					{"name":"main","target":{"committedDate":"2025-01-01T00:00:00Z"}}
				]}
			}}}`))
			return
		}
		if request.Variables["after"] != "next" {
			t.Fatalf("second cursor = %#v", request.Variables["after"])
		}
		_, _ = w.Write([]byte(`{"data":{"repository":{
			"defaultBranchRef":{"name":"main"},
			"refs":{"pageInfo":{"hasNextPage":false},"nodes":[
				{"name":"release/2.0","target":{"committedDate":"2026-07-28T00:00:00Z"}}
			]}
		}}}`))
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	branches, err := client.ListBranches(context.Background(), "o", "r")
	if err != nil {
		t.Fatal(err)
	}
	if requests != 2 || len(branches) != 3 {
		t.Fatalf("requests=%d branches=%#v", requests, branches)
	}
	if branches[0].Name != "main" || !branches[0].IsDefault {
		t.Fatalf("default branch was not first and marked: %#v", branches)
	}
	wantUpdated := time.Date(2026, 7, 28, 0, 0, 0, 0, time.UTC)
	if branches[1].Name != "release/2.0" || !branches[1].UpdatedAt.Equal(wantUpdated) {
		t.Fatalf("fresh branch was not decoded and sorted: %#v", branches)
	}
}

func TestListPullRequestsSearchesAssignedPRsInRepository(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if got := r.Header.Get("Authorization"); got != "Bearer secret" {
			t.Fatalf("authorization = %q", got)
		}
		var request graphQLRequest
		if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
			t.Fatal(err)
		}
		if got := request.Variables["query"]; got != "is:pr is:open sort:updated-desc repo:o/r assignee:@me" {
			t.Fatalf("search query = %q", got)
		}
		_ = json.NewEncoder(w).Encode(map[string]any{"data": map[string]any{
			"viewer": map[string]any{"login": "zam"},
			"search": map[string]any{"nodes": []any{
				map[string]any{
					"id": "1", "number": 1, "title": "assigned", "url": "u", "isDraft": false,
					"updatedAt": "2026-01-01T00:00:00Z", "author": map[string]any{"login": "other"},
					"repository":    map[string]any{"name": "r", "nameWithOwner": "o/r", "owner": map[string]any{"login": "o"}},
					"reviewThreads": map[string]any{"totalCount": 2},
				},
			}},
		}})
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	prs, err := client.ListPullRequests(context.Background(), "o", "r", 50, false)
	if err != nil {
		t.Fatal(err)
	}
	if len(prs) != 1 || prs[0].Number != 1 || prs[0].ReviewCount != 2 ||
		prs[0].Owner != "o" || prs[0].Repository != "r" || prs[0].RepoWithOwner != "o/r" {
		t.Fatalf("unexpected PRs: %#v", prs)
	}
}

func TestListPullRequestsSearchesAllRepositoriesByDefault(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		var request graphQLRequest
		if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
			t.Fatal(err)
		}
		query, _ := request.Variables["query"].(string)
		if !strings.Contains(query, "assignee:@me") || strings.Contains(query, "repo:") {
			t.Fatalf("global search query = %q", query)
		}
		_, _ = w.Write([]byte(`{"data":{"viewer":{"login":"zam"},"search":{"nodes":[]}}}`))
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	if _, err := client.ListPullRequests(context.Background(), "", "", 50, false); err != nil {
		t.Fatal(err)
	}
}

func TestListPullRequestsRejectsGlobalShowAll(t *testing.T) {
	client := NewGitHubClient("unused", "secret")
	if _, err := client.ListPullRequests(context.Background(), "", "", 50, true); err == nil {
		t.Fatal("global --all search was accepted")
	}
}

func TestListPullRequestsPaginatesToConfiguredLimit(t *testing.T) {
	requests := 0
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		requests++
		var request graphQLRequest
		if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
			t.Fatal(err)
		}
		cursor := request.Variables["after"]
		if requests == 1 {
			if cursor != nil || request.Variables["first"] != float64(100) {
				t.Fatalf("first page variables = %#v", request.Variables)
			}
			_, _ = w.Write([]byte(`{"data":{"viewer":{"login":"me"},"search":{
				"pageInfo":{"hasNextPage":true,"endCursor":"next"},"nodes":[]}}}`))
			return
		}
		if cursor != "next" || request.Variables["first"] != float64(50) {
			t.Fatalf("second page variables = %#v", request.Variables)
		}
		_, _ = w.Write([]byte(`{"data":{"viewer":{"login":"me"},"search":{
			"pageInfo":{"hasNextPage":false},"nodes":[]}}}`))
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	if _, err := client.ListPullRequests(context.Background(), "", "", 150, false); err != nil {
		t.Fatal(err)
	}
	if requests != 2 {
		t.Fatalf("requests = %d, want 2", requests)
	}
}

func TestGraphQLErrorsAreReturned(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		_, _ = w.Write([]byte(`{"errors":[{"message":"no access"}]}`))
	}))
	defer server.Close()
	client := NewGitHubClient(server.URL, "secret")
	_, err := client.ListPullRequests(context.Background(), "o", "r", 50, false)
	if err == nil || !strings.Contains(err.Error(), "no access") {
		t.Fatalf("error = %v", err)
	}
}

func TestThreadWriteMutationsUseThreadIDs(t *testing.T) {
	requests := 0
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		requests++
		var request graphQLRequest
		if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
			t.Fatal(err)
		}
		input, _ := request.Variables["input"].(map[string]any)
		switch {
		case strings.Contains(request.Query, "unresolveReviewThread"):
			if input["threadId"] != "thread" {
				t.Fatalf("unresolve input = %#v", input)
			}
			_, _ = w.Write([]byte(`{"data":{"unresolveReviewThread":{"thread":{
				"id":"thread","path":"a.go","isResolved":false,"viewerCanResolve":true
			}}}}`))
		case strings.Contains(request.Query, "resolveReviewThread"):
			if input["threadId"] != "thread" {
				t.Fatalf("resolve input = %#v", input)
			}
			_, _ = w.Write([]byte(`{"data":{"resolveReviewThread":{"thread":{
				"id":"thread","path":"a.go","isResolved":true,"viewerCanUnresolve":true
			}}}}`))
		case strings.Contains(request.Query, "addPullRequestReviewThreadReply"):
			if input["pullRequestReviewThreadId"] != "thread" || input["body"] != "reply body" {
				t.Fatalf("reply input = %#v", input)
			}
			_, _ = w.Write([]byte(`{"data":{"addPullRequestReviewThreadReply":{"comment":{
				"id":"comment","body":"reply body","createdAt":"2026-01-01T00:00:00Z",
				"url":"https://example/comment","author":{"login":"me"}
			}}}}`))
		default:
			t.Fatalf("unexpected mutation: %s", request.Query)
		}
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	resolved, err := client.SetThreadResolved(context.Background(), "thread", true)
	if err != nil || !resolved.IsResolved || !resolved.ViewerCanUnresolve {
		t.Fatalf("resolve result = %#v, error = %v", resolved, err)
	}
	unresolved, err := client.SetThreadResolved(context.Background(), "thread", false)
	if err != nil || unresolved.IsResolved || !unresolved.ViewerCanResolve {
		t.Fatalf("unresolve result = %#v, error = %v", unresolved, err)
	}
	comment, err := client.ReplyToThread(context.Background(), "thread", "reply body")
	if err != nil || comment.ID != "comment" || comment.Author != "me" || comment.Body != "reply body" {
		t.Fatalf("reply result = %#v, error = %v", comment, err)
	}
	if requests != 3 {
		t.Fatalf("mutation requests = %d, want 3", requests)
	}
}

func TestUpdatePullRequestMutatesTitleBodyAndBaseBranch(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		var request graphQLRequest
		if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
			t.Fatal(err)
		}
		if !strings.Contains(request.Query, "mutation UpdatePullRequest") {
			t.Fatalf("unexpected mutation:\n%s", request.Query)
		}
		input := request.Variables["input"].(map[string]any)
		if input["pullRequestId"] != "pr-id" || input["title"] != "New title" ||
			input["body"] != "- [x] done" || input["baseRefName"] != "release" {
			t.Fatalf("update input = %#v", input)
		}
		_, _ = w.Write([]byte(`{"data":{"updatePullRequest":{"pullRequest":{
			"id":"pr-id","title":"New title","body":"- [x] done","baseRefName":"release",
			"updatedAt":"2026-07-28T12:00:00Z","mergeable":"UNKNOWN","mergeStateStatus":"UNKNOWN"
		}}}}`))
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	got, err := client.UpdatePullRequest(context.Background(), "pr-id", PullRequestMetadata{
		Title: "New title", Body: "- [x] done", BaseRef: "release",
	})
	if err != nil {
		t.Fatal(err)
	}
	if got.Title != "New title" || got.Body != "- [x] done" || got.BaseRef != "release" ||
		got.Mergeable != "UNKNOWN" || got.UpdatedAt.IsZero() {
		t.Fatalf("updated pull request = %#v", got)
	}
}

func TestCheckContextsAndAnnotationsArePaginated(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		var request graphQLRequest
		if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
			t.Fatal(err)
		}
		switch {
		case strings.Contains(request.Query, "query CheckContextsPage"):
			_, _ = w.Write([]byte(`{"data":{"node":{"contexts":{
				"pageInfo":{"hasNextPage":false},"nodes":[{
					"id":"check-2","name":"lint","conclusion":"FAILURE"
				}]}}}}`))
		case strings.Contains(request.Query, "query CheckAnnotationsPage"):
			if request.Variables["after"] == nil {
				_, _ = w.Write([]byte(`{"data":{"node":{"annotations":{
					"pageInfo":{"hasNextPage":true,"endCursor":"annotation-next"},
					"nodes":[{"path":"a.go","location":{"start":{"line":4},"end":{"line":4}},
						"annotationLevel":"FAILURE","message":"first"}]
				}}}}`))
			} else {
				_, _ = w.Write([]byte(`{"data":{"node":{"annotations":{
					"pageInfo":{"hasNextPage":false},
					"nodes":[{"path":"b.go","location":{"start":{"line":8},"end":{"line":8}},
						"annotationLevel":"WARNING","message":"second"}]
				}}}}`))
			}
		default:
			t.Fatalf("unexpected query: %s", request.Query)
		}
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	nodes, err := client.allCheckContexts(context.Background(), githubCheckContextConnection{
		PageInfo: githubPageInfo{HasNextPage: true, EndCursor: "context-next"},
		Nodes:    []githubCheckContext{{ID: "check-1", Name: "tests", Conclusion: "SUCCESS"}},
	}, "rollup")
	if err != nil {
		t.Fatal(err)
	}
	if len(nodes) != 2 || len(nodes[1].Annotations.Nodes) != 2 ||
		nodes[1].Annotations.Nodes[0].Location.Start.Line != 4 ||
		nodes[1].Annotations.Nodes[1].Location.End.Line != 8 {
		t.Fatalf("paginated checks = %#v", nodes)
	}
}

func TestCheckQueriesUseCurrentGitHubSchemaShape(t *testing.T) {
	for name, query := range map[string]string{"annotations": checkAnnotationsPageQuery} {
		if strings.Contains(query, "output {") ||
			strings.Contains(query, "nodes { path startLine endLine annotationLevel") ||
			!strings.Contains(query, "location { start { line column } end { line column } }") {
			t.Fatalf("%s query uses obsolete CheckRun/CheckAnnotation fields:\n%s", name, query)
		}
	}
	for name, query := range map[string]string{
		"details": detailsQuery, "context page": checkContextsPageQuery,
	} {
		if strings.Contains(query, "annotations(first:") {
			t.Fatalf("%s query eagerly loads annotations:\n%s", name, query)
		}
	}
}

func TestGetPullRequestPaginatesThreadsCommentsConversationAndReviews(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		var request graphQLRequest
		if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
			t.Fatal(err)
		}
		switch {
		case strings.Contains(request.Query, "query ReviewThreadsPage"):
			_, _ = w.Write([]byte(`{"data":{"repository":{"pullRequest":{"reviewThreads":{
				"pageInfo":{"hasNextPage":false,"endCursor":null},
				"nodes":[{"id":"thread-2","path":"b.go","line":20,"diffSide":"RIGHT",
					"isResolved":false,"isOutdated":false,"viewerCanResolve":true,
					"comments":{"pageInfo":{"hasNextPage":true,"endCursor":"comment-cursor"},
						"nodes":[{"id":"review-comment-2a","body":"first","createdAt":"2026-01-02T00:00:00Z"}]}}]
			}}}}}`))
		case strings.Contains(request.Query, "query ReviewCommentsPage"):
			_, _ = w.Write([]byte(`{"data":{"node":{"comments":{
				"pageInfo":{"hasNextPage":false,"endCursor":null},
				"nodes":[{"id":"review-comment-2b","body":"second","createdAt":"2026-01-03T00:00:00Z"}]
			}}}}`))
		case strings.Contains(request.Query, "query ConversationPage"):
			_, _ = w.Write([]byte(`{"data":{"repository":{"pullRequest":{"comments":{
				"totalCount":2,"pageInfo":{"hasNextPage":false,"endCursor":null},
				"nodes":[{"id":"conversation-2","body":"reply","createdAt":"2026-01-03T00:00:00Z"}]
			}}}}}`))
		case strings.Contains(request.Query, "query ReviewsPage"):
			_, _ = w.Write([]byte(`{"data":{"repository":{"pullRequest":{"reviews":{
				"pageInfo":{"hasNextPage":false,"endCursor":null},
				"nodes":[{"id":"review-2","body":"approved","state":"APPROVED","submittedAt":"2026-01-03T00:00:00Z"}]
			}}}}}`))
		default:
			_, _ = w.Write([]byte(`{"data":{"repository":{"viewerPermission":"WRITE","pullRequest":{
				"id":"pr","number":1,"title":"PR","url":"u","createdAt":"2026-01-01T00:00:00Z",
				"updatedAt":"2026-01-01T00:00:00Z","author":{"login":"alice"},
				"assignees":{"nodes":[]},"labels":{"nodes":[]},"reviewRequests":{"nodes":[]},
				"latestReviews":{"nodes":[]},"commits":{"totalCount":1,"nodes":[]},
				"comments":{"totalCount":2,"pageInfo":{"hasNextPage":true,"endCursor":"conversation-cursor"},
					"nodes":[{"id":"conversation-1","body":"start","createdAt":"2026-01-01T00:00:00Z"}]},
				"reviews":{"pageInfo":{"hasNextPage":true,"endCursor":"review-cursor"},
					"nodes":[{"id":"review-1","body":"changes","state":"CHANGES_REQUESTED","submittedAt":"2026-01-02T00:00:00Z"}]},
				"reviewThreads":{"pageInfo":{"hasNextPage":true,"endCursor":"thread-cursor"},
					"nodes":[{"id":"thread-1","path":"a.go","line":10,"diffSide":"RIGHT",
						"isResolved":false,"isOutdated":false,
						"comments":{"pageInfo":{"hasNextPage":false},
							"nodes":[{"id":"review-comment-1","body":"fix","createdAt":"2026-01-01T00:00:00Z"}]}}]}
			}}}}`))
		}
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	got, err := client.GetPullRequest(context.Background(), "o", "r", 1)
	if err != nil {
		t.Fatal(err)
	}
	if len(got.Threads) != 2 || len(got.Threads[1].Comments) != 2 ||
		len(got.Conversation) != 2 || len(got.Reviews) != 2 {
		t.Fatalf("paginated details were incomplete: %#v", got)
	}
	if !got.Permissions.CanResolveAny || got.Permissions.Repository != "WRITE" {
		t.Fatalf("permissions = %#v", got.Permissions)
	}
}

func TestGetPullRequestUsesOriginalLineAndMetadata(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		_, _ = w.Write([]byte(`{"data":{"repository":{"viewerPermission":"WRITE","pullRequest":{
			"id":"pr","number":9,"title":"Fix","url":"u","body":"body","isDraft":false,
			"createdAt":"2025-12-01T00:00:00Z","updatedAt":"2026-01-01T00:00:00Z",
			"mergeable":"MERGEABLE","mergeStateStatus":"CLEAN","reviewDecision":"APPROVED",
			"additions":12,"deletions":4,"changedFiles":3,
			"baseRefName":"main","headRefName":"fix","headRefOid":"abcdef0123456789",
			"viewerCanUpdate":true,"viewerCanReact":true,"viewerCanSubscribe":true,
			"viewerCanEnableAutoMerge":true,
			"baseRef":{"branchProtectionRule":{"requiresApprovingReviews":true,
				"requiredApprovingReviewCount":2,"requiresStatusChecks":true,
				"requiresConversationResolution":true,"requiresCodeOwnerReviews":true}},
			"author":{"login":"zam"},
			"assignees":{"nodes":[{"login":"sam"}]},
			"labels":{"nodes":[{"name":"bug"},{"name":"backend"}]},
			"milestone":{"title":"v2"},
			"comments":{"totalCount":5},
			"reviewRequests":{"nodes":[{"requestedReviewer":{"login":"lee"}}]},
			"latestReviews":{"nodes":[{"state":"CHANGES_REQUESTED","author":{"login":"pat"}}]},
			"commits":{"totalCount":7,"nodes":[{"commit":{"oid":"abcdef0123456789",
				"statusCheckRollup":{"state":"FAILURE","contexts":{"nodes":[
					{"name":"tests","status":"COMPLETED","conclusion":"FAILURE","detailsUrl":"https://checks/tests"},
					{"context":"legacy","state":"SUCCESS","targetUrl":"https://checks/legacy"}
				]}}}}]},
			"reviewThreads":{"pageInfo":{"hasNextPage":false},"nodes":[{
				"id":"t","isResolved":false,"isOutdated":true,"path":"main.go",
				"viewerCanResolve":true,
				"line":null,"originalLine":42,"diffSide":"RIGHT",
				"startLine":null,"originalStartLine":40,"startDiffSide":"RIGHT",
				"comments":{"pageInfo":{"hasNextPage":false},"nodes":[{
					"id":"c","body":"change this","diffHunk":"@@ -1 +1 @@","createdAt":"2026-01-01T00:00:00Z",
					"url":"cu","author":{"login":"reviewer"},"outdated":true,
					"line":100,"startLine":99,"originalLine":42,"originalStartLine":40,
					"originalCommit":{"oid":"0123456789abcdef"},
					"reactionGroups":[
						{"content":"THUMBS_UP","viewerHasReacted":true,"reactors":{"totalCount":3}},
						{"content":"EYES","viewerHasReacted":false,"reactors":{"totalCount":1}},
						{"content":"HEART","viewerHasReacted":false,"reactors":{"totalCount":0}}
					]
				}]}
			}]}
		}}}}`))
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	got, err := client.GetPullRequest(context.Background(), "o", "r", 9)
	if err != nil {
		t.Fatal(err)
	}
	if got.CheckState != "FAILURE" || got.BaseRef != "main" || got.HeadRef != "fix" || got.ReviewDecision != "APPROVED" {
		t.Fatalf("unexpected metadata: %#v", got)
	}
	if got.MergeState != "CLEAN" || got.Additions != 12 || got.Deletions != 4 ||
		got.ChangedFiles != 3 || got.CommitCount != 7 || got.CommentCount != 5 ||
		got.Milestone != "v2" || strings.Join(got.Labels, ",") != "bug,backend" ||
		got.CreatedAt.IsZero() {
		t.Fatalf("unexpected dashboard metadata: %#v", got)
	}
	if got.HeadOID != "abcdef0123456789" || len(got.Checks) != 2 ||
		got.Checks[0].Name != "tests" || got.Checks[1].Name != "legacy" ||
		got.Permissions.Repository != "WRITE" || !got.Permissions.CanUpdatePR ||
		!got.Permissions.CanResolveAny || got.Requirements.ApprovalsRequired != 2 ||
		!got.Requirements.RequiresConversation || !got.Requirements.RequiresCodeOwnerReview {
		t.Fatalf("unexpected read capabilities: %#v", got)
	}
	if len(got.Threads) != 1 || got.Threads[0].Line != 42 || got.Threads[0].StartLine != 40 ||
		got.Threads[0].DiffSide != "RIGHT" || got.Threads[0].IsTruncated {
		t.Fatalf("unexpected thread: %#v", got.Threads)
	}
	comment := got.Threads[0].Comments[0]
	if comment.OriginalLine != 42 || comment.OriginalStartLine != 40 ||
		comment.OriginalCommitOID != "0123456789abcdef" || !comment.Outdated {
		t.Fatalf("unexpected comment snapshot: %#v", comment)
	}
	if len(comment.Reactions) != 2 ||
		comment.Reactions[0] != (ReactionSummary{Content: "THUMBS_UP", Count: 3, ViewerHasReacted: true}) ||
		comment.Reactions[1] != (ReactionSummary{Content: "EYES", Count: 1}) {
		t.Fatalf("unexpected comment reactions: %#v", comment.Reactions)
	}
}

func TestGetPullRequestLoadsConflictFilesForConflictingPR(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		_, _ = w.Write([]byte(`{"data":{"repository":{
			"url":"https://github.com/o/r","pullRequest":{
				"id":"pr","number":3,"title":"Conflict","url":"u",
				"mergeable":"CONFLICTING","baseRefName":"main","headRefName":"feature",
				"headRefOid":"head123","baseRef":{"target":{"oid":"base123"}},
				"comments":{"pageInfo":{"hasNextPage":false}},
				"reviews":{"pageInfo":{"hasNextPage":false}},
				"timelineItems":{"pageInfo":{"hasNextPage":false}},
				"reviewThreads":{"pageInfo":{"hasNextPage":false}}
			}
		}}}`))
	}))
	defer server.Close()

	client := NewGitHubClient(server.URL, "secret")
	client.conflicts = func(
		_ context.Context,
		repositoryURL string,
		number int,
		baseRef, baseOID, headOID, token string,
	) ([]string, error) {
		if repositoryURL != "https://github.com/o/r" || number != 3 ||
			baseRef != "main" || baseOID != "base123" || headOID != "head123" ||
			token != "secret" {
			t.Fatalf(
				"conflict loader arguments = %q, %d, %q, %q, %q, %q",
				repositoryURL, number, baseRef, baseOID, headOID, token,
			)
		}
		return []string{"src/conflict.go", "README.md"}, nil
	}

	got, err := client.GetPullRequest(context.Background(), "o", "r", 3)
	if err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(got.ConflictFiles, []string{"src/conflict.go", "README.md"}) {
		t.Fatalf("conflict files = %#v", got.ConflictFiles)
	}
}