Fix issue for upload of pullrequest resource

Seems the PR instance not `Unmarshal` from pr.json on the dist when uploading

pkg/pullrequest/disk.go

@@ -169,6 +169,12 @@ func FromDisk(path string) (*Resource, error) {
 	var err error
 	var manifest Manifest
 
+	pr, err := prFromDisk(path, "pr.json")
+	if err != nil {
+		return nil, err
+	}
+	r.PR = &pr
+
 	commentsPath := filepath.Join(path, "comments")
 	r.Comments, manifest, err = commentsFromDisk(commentsPath)
 	if err != nil {
@@ -329,6 +335,18 @@ func refFromDisk(path, name string) (scm.PullRequestBranch, error) {
 	return ref, nil
 }
 
+func prFromDisk(path, name string) (scm.PullRequest, error) {
+	b, err := ioutil.ReadFile(filepath.Join(path, name))
+	if err != nil {
+		return scm.PullRequest{}, err
+	}
+	pr := scm.PullRequest{}
+	if err := json.Unmarshal(b, &pr); err != nil {
+		return scm.PullRequest{}, err
+	}
+	return pr, nil
+}
+
 func isNotExistError(err error) bool {
 	return err != nil && os.IsNotExist(err)
 }

pkg/pullrequest/disk_test.go

@@ -208,6 +208,11 @@ func TestFromDiskWithoutComments(t *testing.T) {
 	defer os.RemoveAll(d)
 
 	// Write some refs
+	pr := scm.PullRequest{
+		Number: 123,
+		Sha:    "0922babb0ea5c0e91a244c5ea8acea902c077281",
+		Ref:    "refs/pull/100/head",
+	}
 	base := scm.PullRequestBranch{
 		Repo: scm.Repository{Name: "repo1"},
 		Ref:  "refs/heads/branch1",
@@ -230,6 +235,7 @@ func TestFromDiskWithoutComments(t *testing.T) {
 	}
 	writeFile(filepath.Join(d, "base.json"), &base)
 	writeFile(filepath.Join(d, "head.json"), &head)
+	writeFile(filepath.Join(d, "pr.json"), &pr)
 
 	rsrc, err := FromDisk(d)
 	if err != nil {
@@ -254,6 +260,11 @@ func TestFromDisk(t *testing.T) {
 	defer os.RemoveAll(d)
 
 	// Write some refs
+	pr := scm.PullRequest{
+		Number: 123,
+		Sha:    "0922babb0ea5c0e91a244c5ea8acea902c077281",
+		Ref:    "refs/pull/100/head",
+	}
 	base := scm.PullRequestBranch{
 		Repo: scm.Repository{Name: "repo1"},
 		Ref:  "refs/heads/branch1",
@@ -276,6 +287,7 @@ func TestFromDisk(t *testing.T) {
 	}
 	writeFile(filepath.Join(d, "base.json"), &base)
 	writeFile(filepath.Join(d, "head.json"), &head)
+	writeFile(filepath.Join(d, "pr.json"), &pr)
 
 	// Write some statuses
 	statuses := []scm.Status{