Support preview Protected Branches API

github/repos.go

@@ -563,11 +563,11 @@ type RequiredStatusChecksRequest struct {
 // PullRequestReviewsEnforcement represents the pull request reviews enforcement of a protected branch.
 type PullRequestReviewsEnforcement struct {
 	// Specifies which users and teams can dismiss pull request reviews.
-	DismissalRestrictions DismissalRestrictions `json:"dismissal_restrictions"`
+	DismissalRestrictions DismissalRestrictions `json:"dismissal_restrictions,omitempty"`
 	// Specifies if approved reviews are dismissed automatically, when a new commit is pushed.
-	DismissStaleReviews bool `json:"dismiss_stale_reviews"`
+	DismissStaleReviews bool `json:"dismiss_stale_reviews,omitempty"`
 	// RequireCodeOwnerReviews specifies if an approved review is required in pull requests including files with a designated code owner.
-	RequireCodeOwnerReviews bool `json:"require_code_owner_reviews"`
+	RequireCodeOwnerReviews bool `json:"require_code_owner_reviews,omitempty"`
 	// RequiredApprovingReviewCount specifies the number of approvals required before the pull request can be merged.
 	// Valid values are 1-6.
 	RequiredApprovingReviewCount int `json:"required_approving_review_count"`

github/repos_test.go

@@ -656,7 +656,8 @@ func TestRepositoriesService_UpdateBranchProtection(t *testing.T) {
 					}]
 				},
 				"dismiss_stale_reviews":true,
-				"require_code_owner_reviews":true
+				"require_code_owner_reviews":true,
+				"required_approving_review_count":2
 			},
 			"restrictions":{
 				"users":[{"id":1,"login":"u"}],
@@ -685,7 +686,8 @@ func TestRepositoriesService_UpdateBranchProtection(t *testing.T) {
 					{Slug: String("tt"), ID: Int64(4)},
 				},
 			},
-			RequireCodeOwnerReviews: true,
+			RequireCodeOwnerReviews:      true,
+			RequiredApprovingReviewCount: 2,
 		},
 		Restrictions: &BranchRestrictions{
 			Users: []*User{