Remove the useless function `GetUserIssueStats` and move relevant tests to `indexer_test.go` (#27067)

Since the issue indexer has been refactored, the issue overview webpage
is built by the `buildIssueOverview` function and underlying
`indexer.Search` function and `GetIssueStats` instead of
`GetUserIssueStats`. So the function is no longer used.
I moved the relevant tests to `indexer_test.go` and since the search
option changed from `IssueOptions` to `SearchOptions`, most of the tests
are useless now.
We need more tests about the db indexer because those tests are highly
connected with the issue overview webpage and now this page has several
bugs.
Any advice about those test cases is appreciated.

---------

Co-authored-by: CaiCandong <50507092+CaiCandong@users.noreply.github.com>

2 files changed, 0 insertions, 314 deletions

diff --git a/models/issues/issue_stats.go b/models/issues/issue_stats.go
index 1654e6ce75..d01ee44462 100644
--- a/models/issues/issue_stats.go
+++ b/models/issues/issue_stats.go
@@ -5,7 +5,6 @@ package issues
 
 import (
 	"context"
-	"errors"
 	"fmt"
 
 	"code.gitea.io/gitea/models/db"
@@ -181,195 +180,6 @@ func applyIssuesOptions(sess *xorm.Session, opts *IssuesOptions, issueIDs []int6
 	return sess
 }
 
-// GetUserIssueStats returns issue statistic information for dashboard by given conditions.
-func GetUserIssueStats(filterMode int, opts IssuesOptions) (*IssueStats, error) {
-	if opts.User == nil {
-		return nil, errors.New("issue stats without user")
-	}
-	if opts.IsPull.IsNone() {
-		return nil, errors.New("unaccepted ispull option")
-	}
-
-	var err error
-	stats := &IssueStats{}
-
-	cond := builder.NewCond()
-
-	cond = cond.And(builder.Eq{"issue.is_pull": opts.IsPull.IsTrue()})
-
-	if len(opts.RepoIDs) > 0 {
-		cond = cond.And(builder.In("issue.repo_id", opts.RepoIDs))
-	}
-	if len(opts.IssueIDs) > 0 {
-		cond = cond.And(builder.In("issue.id", opts.IssueIDs))
-	}
-	if opts.RepoCond != nil {
-		cond = cond.And(opts.RepoCond)
-	}
-
-	if opts.User != nil {
-		cond = cond.And(issuePullAccessibleRepoCond("issue.repo_id", opts.User.ID, opts.Org, opts.Team, opts.IsPull.IsTrue()))
-	}
-
-	sess := func(cond builder.Cond) *xorm.Session {
-		s := db.GetEngine(db.DefaultContext).
-			Join("INNER", "repository", "`issue`.repo_id = `repository`.id").
-			Where(cond)
-		if len(opts.LabelIDs) > 0 {
-			s.Join("INNER", "issue_label", "issue_label.issue_id = issue.id").
-				In("issue_label.label_id", opts.LabelIDs)
-		}
-
-		if opts.IsArchived != util.OptionalBoolNone {
-			s.And(builder.Eq{"repository.is_archived": opts.IsArchived.IsTrue()})
-		}
-		return s
-	}
-
-	switch filterMode {
-	case FilterModeAll, FilterModeYourRepositories:
-		stats.OpenCount, err = sess(cond).
-			And("issue.is_closed = ?", false).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-		stats.ClosedCount, err = sess(cond).
-			And("issue.is_closed = ?", true).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-	case FilterModeAssign:
-		stats.OpenCount, err = applyAssigneeCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", false).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-		stats.ClosedCount, err = applyAssigneeCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", true).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-	case FilterModeCreate:
-		stats.OpenCount, err = applyPosterCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", false).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-		stats.ClosedCount, err = applyPosterCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", true).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-	case FilterModeMention:
-		stats.OpenCount, err = applyMentionedCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", false).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-		stats.ClosedCount, err = applyMentionedCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", true).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-	case FilterModeReviewRequested:
-		stats.OpenCount, err = applyReviewRequestedCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", false).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-		stats.ClosedCount, err = applyReviewRequestedCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", true).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-	case FilterModeReviewed:
-		stats.OpenCount, err = applyReviewedCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", false).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-		stats.ClosedCount, err = applyReviewedCondition(sess(cond), opts.User.ID).
-			And("issue.is_closed = ?", true).
-			Count(new(Issue))
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	cond = cond.And(builder.Eq{"issue.is_closed": opts.IsClosed.IsTrue()})
-	stats.AssignCount, err = applyAssigneeCondition(sess(cond), opts.User.ID).Count(new(Issue))
-	if err != nil {
-		return nil, err
-	}
-
-	stats.CreateCount, err = applyPosterCondition(sess(cond), opts.User.ID).Count(new(Issue))
-	if err != nil {
-		return nil, err
-	}
-
-	stats.MentionCount, err = applyMentionedCondition(sess(cond), opts.User.ID).Count(new(Issue))
-	if err != nil {
-		return nil, err
-	}
-
-	stats.YourRepositoriesCount, err = sess(cond).Count(new(Issue))
-	if err != nil {
-		return nil, err
-	}
-
-	stats.ReviewRequestedCount, err = applyReviewRequestedCondition(sess(cond), opts.User.ID).Count(new(Issue))
-	if err != nil {
-		return nil, err
-	}
-
-	stats.ReviewedCount, err = applyReviewedCondition(sess(cond), opts.User.ID).Count(new(Issue))
-	if err != nil {
-		return nil, err
-	}
-
-	return stats, nil
-}
-
-// GetRepoIssueStats returns number of open and closed repository issues by given filter mode.
-func GetRepoIssueStats(repoID, uid int64, filterMode int, isPull bool) (numOpen, numClosed int64) {
-	countSession := func(isClosed, isPull bool, repoID int64) *xorm.Session {
-		sess := db.GetEngine(db.DefaultContext).
-			Where("is_closed = ?", isClosed).
-			And("is_pull = ?", isPull).
-			And("repo_id = ?", repoID)
-
-		return sess
-	}
-
-	openCountSession := countSession(false, isPull, repoID)
-	closedCountSession := countSession(true, isPull, repoID)
-
-	switch filterMode {
-	case FilterModeAssign:
-		applyAssigneeCondition(openCountSession, uid)
-		applyAssigneeCondition(closedCountSession, uid)
-	case FilterModeCreate:
-		applyPosterCondition(openCountSession, uid)
-		applyPosterCondition(closedCountSession, uid)
-	}
-
-	openResult, _ := openCountSession.Count(new(Issue))
-	closedResult, _ := closedCountSession.Count(new(Issue))
-
-	return openResult, closedResult
-}
-
 // CountOrphanedIssues count issues without a repo
 func CountOrphanedIssues(ctx context.Context) (int64, error) {
 	return db.GetEngine(ctx).
diff --git a/models/issues/issue_test.go b/models/issues/issue_test.go
index b2ff74f0cf..747fbbc78c 100644
--- a/models/issues/issue_test.go
+++ b/models/issues/issue_test.go
@@ -13,12 +13,10 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	issues_model "code.gitea.io/gitea/models/issues"
-	"code.gitea.io/gitea/models/organization"
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/setting"
-	"code.gitea.io/gitea/modules/util"
 
 	"github.com/stretchr/testify/assert"
 	"xorm.io/builder"
@@ -204,128 +202,6 @@ func TestIssues(t *testing.T) {
 	}
 }
 
-func TestGetUserIssueStats(t *testing.T) {
-	assert.NoError(t, unittest.PrepareTestDatabase())
-	for _, test := range []struct {
-		FilterMode         int
-		Opts               issues_model.IssuesOptions
-		ExpectedIssueStats issues_model.IssueStats
-	}{
-		{
-			issues_model.FilterModeAll,
-			issues_model.IssuesOptions{
-				User:    unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1}),
-				RepoIDs: []int64{1},
-				IsPull:  util.OptionalBoolFalse,
-			},
-			issues_model.IssueStats{
-				YourRepositoriesCount: 1, // 6
-				AssignCount:           1, // 6
-				CreateCount:           1, // 6
-				OpenCount:             1, // 6
-				ClosedCount:           1, // 1
-			},
-		},
-		{
-			issues_model.FilterModeAll,
-			issues_model.IssuesOptions{
-				User:     unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1}),
-				RepoIDs:  []int64{1},
-				IsPull:   util.OptionalBoolFalse,
-				IsClosed: util.OptionalBoolTrue,
-			},
-			issues_model.IssueStats{
-				YourRepositoriesCount: 1, // 6
-				AssignCount:           0,
-				CreateCount:           0,
-				OpenCount:             1, // 6
-				ClosedCount:           1, // 1
-			},
-		},
-		{
-			issues_model.FilterModeAssign,
-			issues_model.IssuesOptions{
-				User:   unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1}),
-				IsPull: util.OptionalBoolFalse,
-			},
-			issues_model.IssueStats{
-				YourRepositoriesCount: 1, // 6
-				AssignCount:           1, // 6
-				CreateCount:           1, // 6
-				OpenCount:             1, // 6
-				ClosedCount:           0,
-			},
-		},
-		{
-			issues_model.FilterModeCreate,
-			issues_model.IssuesOptions{
-				User:   unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1}),
-				IsPull: util.OptionalBoolFalse,
-			},
-			issues_model.IssueStats{
-				YourRepositoriesCount: 1, // 6
-				AssignCount:           1, // 6
-				CreateCount:           1, // 6
-				OpenCount:             1, // 6
-				ClosedCount:           0,
-			},
-		},
-		{
-			issues_model.FilterModeMention,
-			issues_model.IssuesOptions{
-				User:   unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1}),
-				IsPull: util.OptionalBoolFalse,
-			},
-			issues_model.IssueStats{
-				YourRepositoriesCount: 1, // 6
-				AssignCount:           1, // 6
-				CreateCount:           1, // 6
-				MentionCount:          0,
-				OpenCount:             0,
-				ClosedCount:           0,
-			},
-		},
-		{
-			issues_model.FilterModeCreate,
-			issues_model.IssuesOptions{
-				User:     unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1}),
-				IssueIDs: []int64{1},
-				IsPull:   util.OptionalBoolFalse,
-			},
-			issues_model.IssueStats{
-				YourRepositoriesCount: 1, // 1
-				AssignCount:           1, // 1
-				CreateCount:           1, // 1
-				OpenCount:             1, // 1
-				ClosedCount:           0,
-			},
-		},
-		{
-			issues_model.FilterModeAll,
-			issues_model.IssuesOptions{
-				User:   unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2}),
-				Org:    unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 3}),
-				Team:   unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 7}),
-				IsPull: util.OptionalBoolFalse,
-			},
-			issues_model.IssueStats{
-				YourRepositoriesCount: 2,
-				AssignCount:           1,
-				CreateCount:           1,
-				OpenCount:             2,
-			},
-		},
-	} {
-		t.Run(fmt.Sprintf("%#v", test.Opts), func(t *testing.T) {
-			stats, err := issues_model.GetUserIssueStats(test.FilterMode, test.Opts)
-			if !assert.NoError(t, err) {
-				return
-			}
-			assert.Equal(t, test.ExpectedIssueStats, *stats)
-		})
-	}
-}
-
 func TestIssue_loadTotalTimes(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 	ms, err := issues_model.GetIssueByID(db.DefaultContext, 2)