From 2382f1b057bb582abc87a030f0463e3b1f6fb118 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Mon, 6 May 2019 20:09:31 +0800
Subject: [PATCH] fix 500 when reviewer is deleted with integration tests
 (#6856)

---
 integrations/pull_review_test.go | 20 ++++++++++++++++++++
 models/fixtures/comment.yml      | 12 ++++++++++++
 models/fixtures/review.yml       |  9 +++++++++
 models/issue_comment.go          |  1 +
 routers/repo/issue.go            |  9 +++++++--
 5 files changed, 49 insertions(+), 2 deletions(-)
 create mode 100644 integrations/pull_review_test.go

diff --git a/integrations/pull_review_test.go b/integrations/pull_review_test.go
new file mode 100644
index 0000000000..b4ddc0e741
--- /dev/null
+++ b/integrations/pull_review_test.go
@@ -0,0 +1,20 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+package integrations
+
+import (
+	"net/http"
+	"testing"
+)
+
+func TestPullView_ReviewerMissed(t *testing.T) {
+	prepareTestEnv(t)
+	session := loginUser(t, "user1")
+
+	req := NewRequest(t, "GET", "/pulls")
+	session.MakeRequest(t, req, http.StatusOK)
+
+	req = NewRequest(t, "GET", "/user2/repo1/pulls/3")
+	session.MakeRequest(t, req, http.StatusOK)
+}
diff --git a/models/fixtures/comment.yml b/models/fixtures/comment.yml
index 6abd26973b..864313cac3 100644
--- a/models/fixtures/comment.yml
+++ b/models/fixtures/comment.yml
@@ -52,3 +52,15 @@
   tree_path: "README.md"
   created_unix: 946684812
   invalidated: true
+
+-
+  id: 7
+  type: 21 # code comment
+  poster_id: 100
+  issue_id: 3
+  content: "a review from a deleted user"
+  line: -4
+  review_id: 10
+  tree_path: "README.md"
+  created_unix: 946684812
+  invalidated: true
\ No newline at end of file
diff --git a/models/fixtures/review.yml b/models/fixtures/review.yml
index 515f0d77f8..a0122dea99 100644
--- a/models/fixtures/review.yml
+++ b/models/fixtures/review.yml
@@ -70,3 +70,12 @@
   content: "New review 3 rejected"
   updated_unix: 946684810
   created_unix: 946684810
+
+-
+  id: 10
+  type: 3
+  reviewer_id: 100
+  issue_id: 3
+  content: "a deleted user's review"
+  updated_unix: 946684810
+  created_unix: 946684810
\ No newline at end of file
diff --git a/models/issue_comment.go b/models/issue_comment.go
index a1c2364b0b..a7d6e2e3e8 100644
--- a/models/issue_comment.go
+++ b/models/issue_comment.go
@@ -447,6 +447,7 @@ func (c *Comment) loadReview(e Engine) (err error) {
 			return err
 		}
 	}
+	c.Review.Issue = c.Issue
 	return nil
 }
 
diff --git a/routers/repo/issue.go b/routers/repo/issue.go
index 4b76bf5ad9..c2749fcb47 100644
--- a/routers/repo/issue.go
+++ b/routers/repo/issue.go
@@ -773,6 +773,8 @@ func ViewIssue(ctx *context.Context) {
 	// Render comments and and fetch participants.
 	participants[0] = issue.Poster
 	for _, comment = range issue.Comments {
+		comment.Issue = issue
+
 		if err := comment.LoadPoster(); err != nil {
 			ctx.ServerError("LoadPoster", err)
 			return
@@ -850,8 +852,11 @@ func ViewIssue(ctx *context.Context) {
 				continue
 			}
 			if err = comment.Review.LoadAttributes(); err != nil {
-				ctx.ServerError("Review.LoadAttributes", err)
-				return
+				if !models.IsErrUserNotExist(err) {
+					ctx.ServerError("Review.LoadAttributes", err)
+					return
+				}
+				comment.Review.Reviewer = models.NewGhostUser()
 			}
 			if err = comment.Review.LoadCodeComments(); err != nil {
 				ctx.ServerError("Review.LoadCodeComments", err)