group-review: add more unit tests

This enables easier testing

group-review/main.go

@@ -18,20 +18,23 @@ import (
 	"src.opensuse.org/autogits/common/gitea-generated/models"
 )
 
-var configs common.AutogitConfigs
-var acceptRx *regexp.Regexp
-var rejectRx *regexp.Regexp
-var groupName string
-
-func InitRegex(newGroupName string) {
-	groupName = newGroupName
-	acceptRx = regexp.MustCompile("^:\\s*(LGTM|approved?)")
-	rejectRx = regexp.MustCompile("^:\\s*")
+type ReviewBot struct {
+	configs   common.AutogitConfigs
+	acceptRx  *regexp.Regexp
+	rejectRx  *regexp.Regexp
+	groupName string
+	gitea     common.Gitea
 }
 
-func ParseReviewLine(reviewText string) (bool, string) {
+func (bot *ReviewBot) InitRegex(newGroupName string) {
+	bot.groupName = newGroupName
+	bot.acceptRx = regexp.MustCompile("^:\\s*(LGTM|approved?)")
+	bot.rejectRx = regexp.MustCompile("^:\\s*")
+}
+
+func (bot *ReviewBot) ParseReviewLine(reviewText string) (bool, string) {
 	line := strings.TrimSpace(reviewText)
-	groupTextName := "@" + groupName
+	groupTextName := "@" + bot.groupName
 	glen := len(groupTextName)
 	if len(line) < glen || line[0:glen] != groupTextName {
 		return false, line
@@ -51,20 +54,20 @@ func ParseReviewLine(reviewText string) (bool, string) {
 	return false, line
 }
 
-func ReviewAccepted(reviewText string) bool {
+func (bot *ReviewBot) ReviewAccepted(reviewText string) bool {
 	for _, line := range common.SplitStringNoEmpty(reviewText, "\n") {
-		if matched, reviewLine := ParseReviewLine(line); matched {
-			return acceptRx.MatchString(reviewLine)
+		if matched, reviewLine := bot.ParseReviewLine(line); matched {
+			return bot.acceptRx.MatchString(reviewLine)
 		}
 	}
 	return false
 }
 
-func ReviewRejected(reviewText string) bool {
+func (bot *ReviewBot) ReviewRejected(reviewText string) bool {
 	for _, line := range common.SplitStringNoEmpty(reviewText, "\n") {
-		if matched, reviewLine := ParseReviewLine(line); matched {
-			if rejectRx.MatchString(reviewLine) {
-				return !acceptRx.MatchString(reviewLine)
+		if matched, reviewLine := bot.ParseReviewLine(line); matched {
+			if bot.rejectRx.MatchString(reviewLine) {
+				return !bot.acceptRx.MatchString(reviewLine)
 			}
 		}
 	}
@@ -114,10 +117,10 @@ var commentStrings = []string{
     "change_time_estimate",
 }*/
 
-func FindAcceptableReviewInTimeline(user string, timeline []*models.TimelineComment, reviews []*models.PullReview) *models.TimelineComment {
+func (bot *ReviewBot) FindAcceptableReviewInTimeline(user string, timeline []*models.TimelineComment, reviews []*models.PullReview) *models.TimelineComment {
 	for _, t := range timeline {
 		if t.Type == common.TimelineCommentType_Comment && t.User.UserName == user && t.Created == t.Updated {
-			if ReviewAccepted(t.Body) || ReviewRejected(t.Body) {
+			if bot.ReviewAccepted(t.Body) || bot.ReviewRejected(t.Body) {
 				return t
 			}
 		}
@@ -126,9 +129,9 @@ func FindAcceptableReviewInTimeline(user string, timeline []*models.TimelineComm
 	return nil
 }
 
-func FindOurLastReviewInTimeline(timeline []*models.TimelineComment) *models.TimelineComment {
+func (bot *ReviewBot) FindOurLastReviewInTimeline(timeline []*models.TimelineComment) *models.TimelineComment {
 	for _, t := range timeline {
-		if t.Type == common.TimelineCommentType_Review && t.User.UserName == groupName && t.Created == t.Updated {
+		if t.Type == common.TimelineCommentType_Review && t.User.UserName == bot.groupName && t.Created == t.Updated {
 			return t
 		}
 	}
@@ -136,13 +139,13 @@ func FindOurLastReviewInTimeline(timeline []*models.TimelineComment) *models.Tim
 	return nil
 }
 
-func UnrequestReviews(gitea common.Gitea, org, repo string, id int64, users []string) {
-	if err := gitea.UnrequestReview(org, repo, id, users...); err != nil {
+func (bot *ReviewBot) UnrequestReviews(org, repo string, id int64, users []string) {
+	if err := bot.gitea.UnrequestReview(org, repo, id, users...); err != nil {
 		common.LogError("Can't remove reviewrs after a review:", err)
 	}
 }
 
-func ProcessNotifications(notification *models.NotificationThread, gitea common.Gitea) {
+func (bot *ReviewBot) ProcessNotifications(notification *models.NotificationThread) {
 	defer func() {
 		if r := recover(); r != nil {
 			common.LogInfo("panic cought --- recovered")
@@ -169,14 +172,14 @@ func ProcessNotifications(notification *models.NotificationThread, gitea common.
 	id, _ := strconv.ParseInt(match[3], 10, 64)
 
 	common.LogInfo("processing:", fmt.Sprintf("%s/%s!%d", org, repo, id))
-	pr, err := gitea.GetPullRequest(org, repo, id)
+	pr, err := bot.gitea.GetPullRequest(org, repo, id)
 	if err != nil {
 		common.LogError("  ** Cannot fetch PR associated with review:", subject.URL, "Error:", err)
 		return
 	}
 
-	if err := ProcessPR(pr); err == nil && !common.IsDryRun {
-		if err := gitea.SetNotificationRead(notification.ID); err != nil {
+	if err := bot.ProcessPR(pr); err == nil && !common.IsDryRun {
+		if err := bot.gitea.SetNotificationRead(notification.ID); err != nil {
 			common.LogDebug("  Cannot set notification as read", err)
 		}
 	} else if err != nil && err != ReviewNotFinished {
@@ -186,24 +189,24 @@ func ProcessNotifications(notification *models.NotificationThread, gitea common.
 
 var ReviewNotFinished = fmt.Errorf("Review is not finished")
 
-func ProcessPR(pr *models.PullRequest) error {
+func (bot *ReviewBot) ProcessPR(pr *models.PullRequest) error {
 	org := pr.Base.Repo.Owner.UserName
 	repo := pr.Base.Repo.Name
 	id := pr.Index
 
 	found := false
 	for _, reviewer := range pr.RequestedReviewers {
-		if reviewer != nil && reviewer.UserName == groupName {
+		if reviewer != nil && reviewer.UserName == bot.groupName {
 			found = true
 			break
 		}
 	}
 	if !found {
-		common.LogInfo("   review is not requested for", groupName)
+		common.LogInfo("   review is not requested for", bot.groupName)
 		return nil
 	}
 
-	config := configs.GetPrjGitConfig(org, repo, pr.Base.Name)
+	config := bot.configs.GetPrjGitConfig(org, repo, pr.Base.Name)
 	if config == nil {
 		return fmt.Errorf("Cannot find config for: %s", pr.URL)
 	}
@@ -213,17 +216,17 @@ func ProcessPR(pr *models.PullRequest) error {
 		return nil
 	}
 
-	reviews, err := gitea.GetPullRequestReviews(org, repo, id)
+	reviews, err := bot.gitea.GetPullRequestReviews(org, repo, id)
 	if err != nil {
 		return fmt.Errorf("Failed to fetch reviews for: %v: %w", pr.URL, err)
 	}
 
-	timeline, err := common.FetchTimelineSinceReviewRequestOrPush(gitea, groupName, pr.Head.Sha, org, repo, id)
+	timeline, err := common.FetchTimelineSinceReviewRequestOrPush(bot.gitea, bot.groupName, pr.Head.Sha, org, repo, id)
 	if err != nil {
 		return fmt.Errorf("Failed to fetch timeline to review. %w", err)
 	}
 
-	groupConfig, err := config.GetReviewGroup(groupName)
+	groupConfig, err := config.GetReviewGroup(bot.groupName)
 	if err != nil {
 		return fmt.Errorf("Failed to fetch review group. %w", err)
 	}
@@ -234,30 +237,30 @@ func ProcessPR(pr *models.PullRequest) error {
 	//	pr.Head.Sha
 
 	for _, reviewer := range requestReviewers {
-		if review := FindAcceptableReviewInTimeline(reviewer, timeline, reviews); review != nil {
-			if ReviewAccepted(review.Body) {
+		if review := bot.FindAcceptableReviewInTimeline(reviewer, timeline, reviews); review != nil {
+			if bot.ReviewAccepted(review.Body) {
 				if !common.IsDryRun {
-					text := reviewer + " approved a review on behalf of " + groupName
-					if review := FindOurLastReviewInTimeline(timeline); review == nil || review.Body != text {
-						_, err := gitea.AddReviewComment(pr, common.ReviewStateApproved, text)
+					text := reviewer + " approved a review on behalf of " + bot.groupName
+					if review := bot.FindOurLastReviewInTimeline(timeline); review == nil || review.Body != text {
+						_, err := bot.gitea.AddReviewComment(pr, common.ReviewStateApproved, text)
 						if err != nil {
 							common.LogError("    -> failed to write approval comment", err)
 						}
-						UnrequestReviews(gitea, org, repo, id, requestReviewers)
+						bot.UnrequestReviews(org, repo, id, requestReviewers)
 					}
 				}
 				common.LogInfo("  -> approved by", reviewer)
 				common.LogInfo("     review at", review.Created)
 				return nil
-			} else if ReviewRejected(review.Body) {
+			} else if bot.ReviewRejected(review.Body) {
 				if !common.IsDryRun {
-					text := reviewer + " requested changes on behalf of " + groupName + ". See " + review.HTMLURL
-					if review := FindOurLastReviewInTimeline(timeline); review == nil || review.Body != text {
-						_, err := gitea.AddReviewComment(pr, common.ReviewStateRequestChanges, text)
+					text := reviewer + " requested changes on behalf of " + bot.groupName + ". See " + review.HTMLURL
+					if review := bot.FindOurLastReviewInTimeline(timeline); review == nil || review.Body != text {
+						_, err := bot.gitea.AddReviewComment(pr, common.ReviewStateRequestChanges, text)
 						if err != nil {
 							common.LogError("    -> failed to write rejecting comment", err)
 						}
-						UnrequestReviews(gitea, org, repo, id, requestReviewers)
+						bot.UnrequestReviews(org, repo, id, requestReviewers)
 					}
 				}
 				common.LogInfo("  -> declined by", reviewer)
@@ -271,7 +274,7 @@ func ProcessPR(pr *models.PullRequest) error {
 	if !groupConfig.Silent && len(requestReviewers) > 0 {
 		common.LogDebug("  Requesting reviews for:", requestReviewers)
 		if !common.IsDryRun {
-			if _, err := gitea.RequestReviews(pr, requestReviewers...); err != nil {
+			if _, err := bot.gitea.RequestReviews(pr, requestReviewers...); err != nil {
 				common.LogDebug("   -> err:", err)
 			}
 		} else {
@@ -284,42 +287,40 @@ func ProcessPR(pr *models.PullRequest) error {
 	// add a helpful comment, if not yet added
 	found_help_comment := false
 	for _, t := range timeline {
-		if t.Type == common.TimelineCommentType_Comment && t.User != nil && t.User.UserName == groupName {
+		if t.Type == common.TimelineCommentType_Comment && t.User != nil && t.User.UserName == bot.groupName {
 			found_help_comment = true
 			break
 		}
 	}
 
 	if !found_help_comment && !common.IsDryRun {
-		helpComment := fmt.Sprintln("Review by", groupName, "represents a group of reviewers:", strings.Join(requestReviewers, ", "), ".\n\n"+
+		helpComment := fmt.Sprintln("Review by", bot.groupName, "represents a group of reviewers:", strings.Join(requestReviewers, ", "), ".\n\n"+
 			"Do **not** use standard review interface to review on behalf of the group.\n"+
-			"To accept the review on behalf of the group, create the following comment: `@"+groupName+": approve`.\n"+
-			"To request changes on behalf of the group, create the following comment: `@"+groupName+": decline` followed with lines justifying the decision.\n"+
+			"To accept the review on behalf of the group, create the following comment: `@"+bot.groupName+": approve`.\n"+
+			"To request changes on behalf of the group, create the following comment: `@"+bot.groupName+": decline` followed with lines justifying the decision.\n"+
 			"Future edits of the comments are ignored, a new comment is required to change the review state.")
 		if slices.Contains(groupConfig.Reviewers, pr.User.UserName) {
 			helpComment = helpComment + "\n\n" +
 				"Submitter is member of this review group, hence they are excluded from being one of the reviewers here"
 		}
-		gitea.AddComment(pr, helpComment)
+		bot.gitea.AddComment(pr, helpComment)
 	}
 
 	return ReviewNotFinished
 }
 
-func PeriodReviewCheck() {
-	notifications, err := gitea.GetNotifications(common.GiteaNotificationType_Pull, nil)
+func (bot *ReviewBot) PeriodReviewCheck() {
+	notifications, err := bot.gitea.GetNotifications(common.GiteaNotificationType_Pull, nil)
 	if err != nil {
 		common.LogError("   Error fetching unread notifications: %w", err)
 		return
 	}
 
 	for _, notification := range notifications {
-		ProcessNotifications(notification, gitea)
+		bot.ProcessNotifications(notification)
 	}
 }
 
-var gitea common.Gitea
-
 func main() {
 	giteaUrl := flag.String("gitea-url", "https://src.opensuse.org", "Gitea instance used for reviews")
 	rabbitMqHost := flag.String("rabbit-url", "amqps://rabbit.opensuse.org", "RabbitMQ instance where Gitea webhook notifications are sent")
@@ -355,7 +356,7 @@ func main() {
 		flag.Usage()
 		return
 	}
-	groupName = args[0]
+	targetGroupName := args[0]
 
 	if *configFile == "" {
 		common.LogError("Missing config file")
@@ -378,14 +379,14 @@ func main() {
 		return
 	}
 
-	gitea = common.AllocateGiteaTransport(*giteaUrl)
-	configs, err = common.ResolveWorkflowConfigs(gitea, configData)
+	giteaTransport := common.AllocateGiteaTransport(*giteaUrl)
+	configs, err := common.ResolveWorkflowConfigs(giteaTransport, configData)
 	if err != nil {
 		common.LogError("Cannot parse workflow configs:", err)
 		return
 	}
 
-	reviewer, err := gitea.GetCurrentUser()
+	reviewer, err := giteaTransport.GetCurrentUser()
 	if err != nil {
 		common.LogError("Cannot fetch review user:", err)
 		return
@@ -395,14 +396,18 @@ func main() {
 		*interval = 1
 	}
 
-	InitRegex(groupName)
+	bot := &ReviewBot{
+		gitea:   giteaTransport,
+		configs: configs,
+	}
+	bot.InitRegex(targetGroupName)
 
-	common.LogInfo(" ** processing group reviews for group:", groupName)
+	common.LogInfo(" ** processing group reviews for group:", bot.groupName)
 	common.LogInfo(" ** username in Gitea:", reviewer.UserName)
 	common.LogInfo(" ** polling interval:", *interval, "min")
 	common.LogInfo(" ** connecting to RabbitMQ:", *rabbitMqHost)
 
-	if groupName != reviewer.UserName {
+	if bot.groupName != reviewer.UserName {
 		common.LogError(" ***** Reviewer does not match group name. Aborting. *****")
 		return
 	}
@@ -414,10 +419,13 @@ func main() {
 	}
 
 	config_update := ConfigUpdatePush{
+		bot:             bot,
 		config_modified: make(chan *common.AutogitConfig),
 	}
 
-	process_issue_pr := IssueCommentProcessor{}
+	process_issue_pr := IssueCommentProcessor{
+		bot: bot,
+	}
 
 	configUpdates := &common.RabbitMQGiteaEventsProcessor{
 		Orgs: []string{},
@@ -427,7 +435,7 @@ func main() {
 		},
 	}
 	configUpdates.Connection().RabbitURL = u
-	for _, c := range configs {
+	for _, c := range bot.configs {
 		if org, _, _ := c.GetPrjGit(); !slices.Contains(configUpdates.Orgs, org) {
 			configUpdates.Orgs = append(configUpdates.Orgs, org)
 		}
@@ -440,17 +448,17 @@ func main() {
 			select {
 			case configTouched, ok := <-config_update.config_modified:
 				if ok {
-					for idx, c := range configs {
+					for idx, c := range bot.configs {
 						if c == configTouched {
 							org, repo, branch := c.GetPrjGit()
 							prj := fmt.Sprintf("%s/%s#%s", org, repo, branch)
 							common.LogInfo("Detected config update for", prj)
 
-							new_config, err := common.ReadWorkflowConfig(gitea, prj)
+							new_config, err := common.ReadWorkflowConfig(bot.gitea, prj)
 							if err != nil {
 								common.LogError("Failed parsing Project config for", prj, err)
 							} else {
-								configs[idx] = new_config
+								bot.configs[idx] = new_config
 							}
 						}
 					}
@@ -460,7 +468,7 @@ func main() {
 			}
 		}
 
-		PeriodReviewCheck()
+		bot.PeriodReviewCheck()
 		time.Sleep(time.Duration(*interval * int64(time.Minute)))
 	}
 }

group-review/main_test.go

@@ -1,6 +1,359 @@
 package main
 
-import "testing"
+import (
+	"fmt"
+	"testing"
+
+	"go.uber.org/mock/gomock"
+	"src.opensuse.org/autogits/common"
+	"src.opensuse.org/autogits/common/gitea-generated/models"
+	mock_common "src.opensuse.org/autogits/common/mock"
+)
+
+func TestProcessPR(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	mockGitea := mock_common.NewMockGitea(ctrl)
+	groupName := "testgroup"
+
+	bot := &ReviewBot{
+		gitea:     mockGitea,
+		groupName: groupName,
+	}
+	bot.InitRegex(groupName)
+
+	org := "myorg"
+	repo := "myrepo"
+	prIndex := int64(1)
+	headSha := "abcdef123456"
+
+	pr := &models.PullRequest{
+		Index: prIndex,
+		URL:   "http://gitea/pr/1",
+		State: "open",
+		Base: &models.PRBranchInfo{
+			Name: "main",
+			Repo: &models.Repository{
+				Name: repo,
+				Owner: &models.User{
+					UserName: org,
+				},
+			},
+		},
+		Head: &models.PRBranchInfo{
+			Sha: headSha,
+		},
+		User: &models.User{
+			UserName: "submitter",
+		},
+		RequestedReviewers: []*models.User{
+			{UserName: groupName},
+		},
+	}
+
+	prjConfig := &common.AutogitConfig{
+		GitProjectName: org + "/" + repo + "#main",
+		ReviewGroups: []*common.ReviewGroup{
+			{
+				Name:      groupName,
+				Reviewers: []string{"reviewer1", "reviewer2"},
+			},
+		},
+	}
+	bot.configs = common.AutogitConfigs{prjConfig}
+
+	t.Run("Review not requested for group", func(t *testing.T) {
+		prNoRequest := *pr
+		prNoRequest.RequestedReviewers = nil
+		err := bot.ProcessPR(&prNoRequest)
+		if err != nil {
+			t.Errorf("Expected no error, got %v", err)
+		}
+	})
+
+	t.Run("PR is closed", func(t *testing.T) {
+		prClosed := *pr
+		prClosed.State = "closed"
+		err := bot.ProcessPR(&prClosed)
+		if err != nil {
+			t.Errorf("Expected no error, got %v", err)
+		}
+	})
+
+	t.Run("Successful Approval", func(t *testing.T) {
+		common.IsDryRun = false
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, prIndex).Return(nil, nil)
+		// reviewer1 approved in timeline
+		timeline := []*models.TimelineComment{
+			{
+				Type: common.TimelineCommentType_Comment,
+				User: &models.User{UserName: "reviewer1"},
+				Body: "@" + groupName + ": approve",
+			},
+		}
+
+		mockGitea.EXPECT().GetTimeline(org, repo, prIndex).Return(timeline, nil)
+
+		expectedText := "reviewer1 approved a review on behalf of " + groupName
+		mockGitea.EXPECT().AddReviewComment(pr, common.ReviewStateApproved, expectedText).Return(nil, nil)
+		mockGitea.EXPECT().UnrequestReview(org, repo, prIndex, gomock.Any()).Return(nil)
+
+		err := bot.ProcessPR(pr)
+		if err != nil {
+			t.Errorf("Expected nil error, got %v", err)
+		}
+	})
+
+	t.Run("Dry Run - No actions taken", func(t *testing.T) {
+		common.IsDryRun = true
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, prIndex).Return(nil, nil)
+		timeline := []*models.TimelineComment{
+			{
+				Type: common.TimelineCommentType_Comment,
+				User: &models.User{UserName: "reviewer1"},
+				Body: "@" + groupName + ": approve",
+			},
+		}
+		mockGitea.EXPECT().GetTimeline(org, repo, prIndex).Return(timeline, nil)
+
+		// No AddReviewComment or UnrequestReview should be called
+		err := bot.ProcessPR(pr)
+		if err != nil {
+			t.Errorf("Expected nil error, got %v", err)
+		}
+	})
+
+	t.Run("Approval already exists - No new comment", func(t *testing.T) {
+		common.IsDryRun = false
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, prIndex).Return(nil, nil)
+
+		approvalText := "reviewer1 approved a review on behalf of " + groupName
+		timeline := []*models.TimelineComment{
+			{
+				Type: common.TimelineCommentType_Review,
+				User: &models.User{UserName: groupName},
+				Body: approvalText,
+			},
+			{
+				Type: common.TimelineCommentType_Comment,
+				User: &models.User{UserName: "reviewer1"},
+				Body: "@" + groupName + ": approve",
+			},
+			{
+				Type: common.TimelineCommentType_Comment,
+				User: &models.User{UserName: groupName},
+				Body: "Help comment",
+			},
+		}
+
+		mockGitea.EXPECT().GetTimeline(org, repo, prIndex).Return(timeline, nil)
+
+		// No AddReviewComment, UnrequestReview, or AddComment should be called
+		err := bot.ProcessPR(pr)
+		if err != nil {
+			t.Errorf("Expected nil error, got %v", err)
+		}
+	})
+
+	t.Run("Rejection already exists - No new comment", func(t *testing.T) {
+		common.IsDryRun = false
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, prIndex).Return(nil, nil)
+
+		rejectionText := "reviewer1 requested changes on behalf of " + groupName + ". See http://gitea/comment/123"
+		timeline := []*models.TimelineComment{
+			{
+				Type: common.TimelineCommentType_Review,
+				User: &models.User{UserName: groupName},
+				Body: rejectionText,
+			},
+			{
+				Type:    common.TimelineCommentType_Comment,
+				User:    &models.User{UserName: "reviewer1"},
+				Body:    "@" + groupName + ": decline",
+				HTMLURL: "http://gitea/comment/123",
+			},
+			{
+				Type: common.TimelineCommentType_Comment,
+				User: &models.User{UserName: groupName},
+				Body: "Help comment",
+			},
+		}
+
+		mockGitea.EXPECT().GetTimeline(org, repo, prIndex).Return(timeline, nil)
+
+		err := bot.ProcessPR(pr)
+		if err != nil {
+			t.Errorf("Expected nil error, got %v", err)
+		}
+	})
+
+	t.Run("Pending review - Help comment already exists", func(t *testing.T) {
+		common.IsDryRun = false
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, prIndex).Return(nil, nil)
+
+		timeline := []*models.TimelineComment{
+			{
+				Type: common.TimelineCommentType_Comment,
+				User: &models.User{UserName: groupName},
+				Body: "Some help comment",
+			},
+		}
+
+		mockGitea.EXPECT().GetTimeline(org, repo, prIndex).Return(timeline, nil)
+
+		// It will try to request reviews
+		mockGitea.EXPECT().RequestReviews(pr, "reviewer1", "reviewer2").Return(nil, nil)
+
+		// AddComment should NOT be called because bot already has a comment in timeline
+		err := bot.ProcessPR(pr)
+		if err != ReviewNotFinished {
+			t.Errorf("Expected ReviewNotFinished error, got %v", err)
+		}
+	})
+
+	t.Run("Submitter is group member - Excluded from review request", func(t *testing.T) {
+		common.IsDryRun = false
+		prSubmitterMember := *pr
+		prSubmitterMember.User = &models.User{UserName: "reviewer1"}
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, prIndex).Return(nil, nil)
+		mockGitea.EXPECT().GetTimeline(org, repo, prIndex).Return(nil, nil)
+		mockGitea.EXPECT().RequestReviews(&prSubmitterMember, "reviewer2").Return(nil, nil)
+		mockGitea.EXPECT().AddComment(&prSubmitterMember, gomock.Any()).Return(nil)
+		err := bot.ProcessPR(&prSubmitterMember)
+		if err != ReviewNotFinished {
+			t.Errorf("Expected ReviewNotFinished error, got %v", err)
+		}
+	})
+
+	t.Run("Successful Rejection", func(t *testing.T) {
+		common.IsDryRun = false
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, prIndex).Return(nil, nil)
+		timeline := []*models.TimelineComment{
+			{
+				Type:    common.TimelineCommentType_Comment,
+				User:    &models.User{UserName: "reviewer2"},
+				Body:    "@" + groupName + ": decline",
+				HTMLURL: "http://gitea/comment/999",
+			},
+		}
+		mockGitea.EXPECT().GetTimeline(org, repo, prIndex).Return(timeline, nil)
+		expectedText := "reviewer2 requested changes on behalf of " + groupName + ". See http://gitea/comment/999"
+		mockGitea.EXPECT().AddReviewComment(pr, common.ReviewStateRequestChanges, expectedText).Return(nil, nil)
+		mockGitea.EXPECT().UnrequestReview(org, repo, prIndex, gomock.Any()).Return(nil)
+		err := bot.ProcessPR(pr)
+		if err != nil {
+			t.Errorf("Expected nil error, got %v", err)
+		}
+	})
+
+	t.Run("Config not found", func(t *testing.T) {
+		bot.configs = common.AutogitConfigs{}
+		err := bot.ProcessPR(pr)
+		if err == nil {
+			t.Error("Expected error when config is missing, got nil")
+		}
+	})
+
+	t.Run("Gitea error in GetPullRequestReviews", func(t *testing.T) {
+		bot.configs = common.AutogitConfigs{prjConfig}
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, prIndex).Return(nil, fmt.Errorf("gitea error"))
+		err := bot.ProcessPR(pr)
+		if err == nil {
+			t.Error("Expected error from gitea, got nil")
+		}
+	})
+}
+
+func TestProcessNotifications(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	mockGitea := mock_common.NewMockGitea(ctrl)
+	groupName := "testgroup"
+
+	bot := &ReviewBot{
+		gitea:     mockGitea,
+		groupName: groupName,
+	}
+	bot.InitRegex(groupName)
+
+	org := "myorg"
+	repo := "myrepo"
+	prIndex := int64(123)
+	notificationID := int64(456)
+
+	notification := &models.NotificationThread{
+		ID: notificationID,
+		Subject: &models.NotificationSubject{
+			URL: fmt.Sprintf("http://gitea/api/v1/repos/%s/%s/pulls/%d", org, repo, prIndex),
+		},
+	}
+
+	t.Run("Notification Success", func(t *testing.T) {
+		common.IsDryRun = false
+		pr := &models.PullRequest{
+			Index: prIndex,
+			Base: &models.PRBranchInfo{
+				Name: "main",
+				Repo: &models.Repository{
+					Name:  repo,
+					Owner: &models.User{UserName: org},
+				},
+			},
+
+			Head: &models.PRBranchInfo{
+				Sha: "headsha",
+				Repo: &models.Repository{
+					Name:  repo,
+					Owner: &models.User{UserName: org},
+				},
+			},
+
+			User:               &models.User{UserName: "submitter"},
+			RequestedReviewers: []*models.User{{UserName: groupName}},
+		}
+
+		mockGitea.EXPECT().GetPullRequest(org, repo, prIndex).Return(pr, nil)
+
+		prjConfig := &common.AutogitConfig{
+			GitProjectName: org + "/" + repo + "#main",
+			ReviewGroups:   []*common.ReviewGroup{{Name: groupName, Reviewers: []string{"r1"}}},
+		}
+		bot.configs = common.AutogitConfigs{prjConfig}
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, prIndex).Return(nil, nil)
+		timeline := []*models.TimelineComment{
+			{
+				Type: common.TimelineCommentType_Comment,
+				User: &models.User{UserName: "r1"},
+				Body: "@" + groupName + ": approve",
+			},
+		}
+		mockGitea.EXPECT().GetTimeline(org, repo, prIndex).Return(timeline, nil)
+		expectedText := "r1 approved a review on behalf of " + groupName
+		mockGitea.EXPECT().AddReviewComment(pr, common.ReviewStateApproved, expectedText).Return(nil, nil)
+		mockGitea.EXPECT().UnrequestReview(org, repo, prIndex, gomock.Any()).Return(nil)
+
+		mockGitea.EXPECT().SetNotificationRead(notificationID).Return(nil)
+
+		bot.ProcessNotifications(notification)
+
+	})
+
+	t.Run("Invalid Notification URL", func(t *testing.T) {
+		badNotification := &models.NotificationThread{
+			Subject: &models.NotificationSubject{
+				URL: "http://gitea/invalid/url",
+			},
+		}
+		bot.ProcessNotifications(badNotification)
+	})
+
+	t.Run("Gitea error in GetPullRequest", func(t *testing.T) {
+		mockGitea.EXPECT().GetPullRequest(org, repo, prIndex).Return(nil, fmt.Errorf("gitea error"))
+		bot.ProcessNotifications(notification)
+	})
+}
 
 func TestReviewApprovalCheck(t *testing.T) {
 	tests := []struct {
@@ -60,16 +413,78 @@ func TestReviewApprovalCheck(t *testing.T) {
 			InString:  "@group2: disapprove",
 			Rejected:  true,
 		},
+		{
+			Name:      "Whitespace before colon",
+			GroupName: "group",
+			InString:  "@group  : LGTM",
+			Approved:  true,
+		},
+		{
+			Name:      "No whitespace after colon",
+			GroupName: "group",
+			InString:  "@group:LGTM",
+			Approved:  true,
+		},
+		{
+			Name:      "Leading and trailing whitespace on line",
+			GroupName: "group",
+			InString:  "   @group: LGTM   ",
+			Approved:  true,
+		},
+		{
+			Name:      "Multiline: Approved on second line",
+			GroupName: "group",
+			InString:  "Random noise\n@group: approved",
+			Approved:  true,
+		},
+		{
+			Name:      "Multiline: Multiple group mentions, first wins",
+			GroupName: "group",
+			InString:  "@group: decline\n@group: approve",
+			Rejected:  true,
+		},
+		{
+			Name:      "Multiline: Multiple group mentions, noise in between",
+			GroupName: "group",
+			InString:  "noise\n@group: approve\nmore noise",
+			Approved:  true,
+		},
+		{
+			Name:      "Not at start of line (even with whitespace)",
+			GroupName: "group",
+			InString:  "Hello @group: approve",
+			Approved:  false,
+		},
+		{
+			Name:      "Rejecting with reason",
+			GroupName: "group",
+			InString:  "@group: decline because of X, Y and Z",
+			Rejected:  true,
+		},
+		{
+			Name:      "No colon after group",
+			GroupName: "group",
+			InString:  "@group LGTM",
+			Approved:  false,
+			Rejected:  false,
+		},
+		{
+			Name:      "Invalid char after group",
+			GroupName: "group",
+			InString:  "@group! LGTM",
+			Approved:  false,
+			Rejected:  false,
+		},
 	}
-
 	for _, test := range tests {
 		t.Run(test.Name, func(t *testing.T) {
-			InitRegex(test.GroupName)
+			bot := &ReviewBot{}
+			bot.InitRegex(test.GroupName)
 
-			if r := ReviewAccepted(test.InString); r != test.Approved {
+			if r := bot.ReviewAccepted(test.InString); r != test.Approved {
 				t.Error("ReviewAccepted() returned", r, "expecting", test.Approved)
 			}
-			if r := ReviewRejected(test.InString); r != test.Rejected {
+			if r := bot.ReviewRejected(test.InString); r != test.Rejected {
 				t.Error("ReviewRejected() returned", r, "expecting", test.Rejected)
 			}
 		})

group-review/rabbit.go

@@ -7,7 +7,9 @@ import (
 	"src.opensuse.org/autogits/common"
 )
 
-type IssueCommentProcessor struct{}
+type IssueCommentProcessor struct {
+	bot *ReviewBot
+}
 
 func (s *IssueCommentProcessor) ProcessFunc(req *common.Request) error {
 	if req.Type != common.RequestType_IssueComment {
@@ -19,14 +21,15 @@ func (s *IssueCommentProcessor) ProcessFunc(req *common.Request) error {
 	repo := data.Repository.Name
 	index := int64(data.Issue.Number)
 
-	pr, err := gitea.GetPullRequest(org, repo, index)
+	pr, err := s.bot.gitea.GetPullRequest(org, repo, index)
 	if err != nil {
 		return fmt.Errorf("Failed to fetch PullRequest from event: %s/%s!%d  Error: %w", org, repo, index, err)
 	}
-	return ProcessPR(pr)
+	return s.bot.ProcessPR(pr)
 }
 
 type ConfigUpdatePush struct {
+	bot             *ReviewBot
 	config_modified chan *common.AutogitConfig
 }
 
@@ -46,7 +49,7 @@ func (s *ConfigUpdatePush) ProcessFunc(req *common.Request) error {
 	}
 	branch := data.Ref[len(branch_ref):]
 
-	c := configs.GetPrjGitConfig(org, repo, branch)
+	c := s.bot.configs.GetPrjGitConfig(org, repo, branch)
 	if c == nil {
 		return nil
 	}
@@ -64,7 +67,7 @@ func (s *ConfigUpdatePush) ProcessFunc(req *common.Request) error {
 	}
 
 	if modified_config {
-		for _, config := range configs {
+		for _, config := range s.bot.configs {
 			if o, r, _ := config.GetPrjGit(); o == org && r == repo {
 				s.config_modified <- config
 			}

group-review/rabbit_test.go

@@ -0,0 +1,203 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+
+	"go.uber.org/mock/gomock"
+	"src.opensuse.org/autogits/common"
+	"src.opensuse.org/autogits/common/gitea-generated/models"
+	mock_common "src.opensuse.org/autogits/common/mock"
+)
+
+func TestIssueCommentProcessor(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	mockGitea := mock_common.NewMockGitea(ctrl)
+	groupName := "testgroup"
+	bot := &ReviewBot{
+		gitea:     mockGitea,
+		groupName: groupName,
+	}
+	bot.InitRegex(groupName)
+
+	processor := &IssueCommentProcessor{bot: bot}
+
+	org := "myorg"
+	repo := "myrepo"
+	index := 123
+
+	event := &common.IssueCommentWebhookEvent{
+		Repository: &common.Repository{
+			Name: repo,
+			Owner: &common.Organization{
+				Username: org,
+			},
+		},
+		Issue: &common.IssueDetail{
+			Number: index,
+		},
+	}
+
+	req := &common.Request{
+		Type: common.RequestType_IssueComment,
+		Data: event,
+	}
+
+	t.Run("Successful Processing", func(t *testing.T) {
+		pr := &models.PullRequest{
+			Index: int64(index),
+			Base: &models.PRBranchInfo{
+				Name: "main",
+				Repo: &models.Repository{
+					Name: repo,
+					Owner: &models.User{UserName: org},
+				},
+			},
+			Head: &models.PRBranchInfo{
+				Sha: "headsha",
+				Repo: &models.Repository{
+					Name: repo,
+					Owner: &models.User{UserName: org},
+				},
+			},
+			User:               &models.User{UserName: "submitter"},
+			RequestedReviewers: []*models.User{{UserName: groupName}},
+		}
+
+		mockGitea.EXPECT().GetPullRequest(org, repo, int64(index)).Return(pr, nil)
+
+		prjConfig := &common.AutogitConfig{
+			GitProjectName: org + "/" + repo + "#main",
+			ReviewGroups: []*common.ReviewGroup{{Name: groupName, Reviewers: []string{"r1"}}},
+		}
+		bot.configs = common.AutogitConfigs{prjConfig}
+		mockGitea.EXPECT().GetPullRequestReviews(org, repo, int64(index)).Return(nil, nil)
+		mockGitea.EXPECT().GetTimeline(org, repo, int64(index)).Return(nil, nil)
+		mockGitea.EXPECT().RequestReviews(pr, "r1").Return(nil, nil)
+		mockGitea.EXPECT().AddComment(pr, gomock.Any()).Return(nil)
+
+		err := processor.ProcessFunc(req)
+		if err != ReviewNotFinished {
+			t.Errorf("Expected ReviewNotFinished, got %v", err)
+		}
+	})
+
+	t.Run("Gitea error in GetPullRequest", func(t *testing.T) {
+		mockGitea.EXPECT().GetPullRequest(org, repo, int64(index)).Return(nil, fmt.Errorf("gitea error"))
+		err := processor.ProcessFunc(req)
+		if err == nil {
+			t.Error("Expected error, got nil")
+		}
+	})
+
+	t.Run("Wrong Request Type", func(t *testing.T) {
+		wrongReq := &common.Request{Type: common.RequestType_Push}
+		err := processor.ProcessFunc(wrongReq)
+		if err == nil {
+			t.Error("Expected error for wrong request type, got nil")
+		}
+	})
+}
+
+func TestConfigUpdatePush(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	groupName := "testgroup"
+	bot := &ReviewBot{
+		groupName: groupName,
+	}
+	bot.InitRegex(groupName)
+
+	configChan := make(chan *common.AutogitConfig, 1)
+	processor := &ConfigUpdatePush{
+		bot:             bot,
+		config_modified: configChan,
+	}
+
+	org := "myorg"
+	repo := "myrepo"
+	branch := "main"
+
+	prjConfig := &common.AutogitConfig{
+		GitProjectName: org + "/" + repo + "#" + branch,
+		Organization:   org,
+		Branch:         branch,
+	}
+	bot.configs = common.AutogitConfigs{prjConfig}
+
+	event := &common.PushWebhookEvent{
+		Ref: "refs/heads/" + branch,
+		Repository: &common.Repository{
+			Name: repo,
+			Owner: &common.Organization{
+				Username: org,
+			},
+		},
+		Commits: []common.Commit{
+			{
+				Modified: []string{common.ProjectConfigFile},
+			},
+		},
+	}
+
+	req := &common.Request{
+		Type: common.RequestType_Push,
+		Data: event,
+	}
+
+	t.Run("Config Modified", func(t *testing.T) {
+		err := processor.ProcessFunc(req)
+		if err != nil {
+			t.Errorf("Expected nil error, got %v", err)
+		}
+
+		select {
+		case modified := <-configChan:
+			if modified != prjConfig {
+				t.Errorf("Expected modified config to be %v, got %v", prjConfig, modified)
+			}
+		default:
+			t.Error("Expected config modification signal, but none received")
+		}
+	})
+
+	t.Run("No Config Modified", func(t *testing.T) {
+		noConfigEvent := *event
+		noConfigEvent.Commits = []common.Commit{{Modified: []string{"README.md"}}}
+		noConfigReq := &common.Request{Type: common.RequestType_Push, Data: &noConfigEvent}
+
+		err := processor.ProcessFunc(noConfigReq)
+		if err != nil {
+			t.Errorf("Expected nil error, got %v", err)
+		}
+
+		select {
+		case <-configChan:
+			t.Error("Did not expect config modification signal")
+		default:
+			// Success
+		}
+	})
+
+	t.Run("Wrong Branch Ref", func(t *testing.T) {
+		wrongBranchEvent := *event
+		wrongBranchEvent.Ref = "refs/tags/v1.0"
+		wrongBranchReq := &common.Request{Type: common.RequestType_Push, Data: &wrongBranchEvent}
+
+		err := processor.ProcessFunc(wrongBranchReq)
+		if err == nil {
+			t.Error("Expected error for wrong branch ref, got nil")
+		}
+	})
+
+	t.Run("Config Not Found", func(t *testing.T) {
+		bot.configs = common.AutogitConfigs{}
+		err := processor.ProcessFunc(req)
+		if err != nil {
+			t.Errorf("Expected nil error even if config not found, got %v", err)
+		}
+	})
+}