Add type SponsorshipEvent (#3258)

Fixes: #2982.

github/event_types.go

@@ -1821,3 +1821,27 @@ type CodeScanningAlertEvent struct {
 
 	Installation *Installation `json:"installation,omitempty"`
 }
+
+// SponsorshipEvent represents a sponsorship event in GitHub.
+//
+// GitHub API docs: https://docs.github.com/en/rest/overview/github-event-types?apiVersion=2022-11-28#sponsorshipevent
+type SponsorshipEvent struct {
+	Action        *string             `json:"action,omitempty"`
+	EffectiveDate *string             `json:"effective_date,omitempty"`
+	Changes       *SponsorshipChanges `json:"changes,omitempty"`
+	Repository    *Repository         `json:"repository,omitempty"`
+	Organization  *Organization       `json:"organization,omitempty"`
+	Sender        *User               `json:"sender,omitempty"`
+	Installation  *Installation       `json:"installation,omitempty"`
+}
+
+// SponsorshipChanges represents changes made to the sponsorship.
+type SponsorshipChanges struct {
+	Tier         *SponsorshipTier `json:"tier,omitempty"`
+	PrivacyLevel *string          `json:"privacy_level,omitempty"`
+}
+
+// SponsorshipTier represents the tier information of a sponsorship.
+type SponsorshipTier struct {
+	From *string `json:"from,omitempty"`
+}

github/event_types_test.go

@@ -17885,3 +17885,97 @@ func TestCodeScanningAlertEvent_Marshal(t *testing.T) {
 
 	testJSONMarshal(t, u, want)
 }
+
+func TestSponsorshipEvent_Marshal(t *testing.T) {
+	testJSONMarshal(t, &SponsorshipEvent{}, "{}")
+
+	u := &SponsorshipEvent{
+		Action:        String("created"),
+		EffectiveDate: String("2023-01-01T00:00:00Z"),
+		Changes: &SponsorshipChanges{
+			Tier: &SponsorshipTier{
+				From: String("basic"),
+			},
+			PrivacyLevel: String("public"),
+		},
+		Repository: &Repository{
+			ID:     Int64(12345),
+			NodeID: String("MDEwOlJlcG9zaXRvcnkxMjM0NQ=="),
+			Name:   String("example-repo"),
+		},
+		Organization: &Organization{
+			Login: String("example-org"),
+			ID:    Int64(67890),
+		},
+		Sender: &User{
+			Login: String("example-user"),
+			ID:    Int64(1111),
+		},
+		Installation: &Installation{
+			ID: Int64(2222),
+		},
+	}
+
+	want := `{
+		"action": "created",
+		"effective_date": "2023-01-01T00:00:00Z",
+		"changes": {
+			"tier": {
+				"from": "basic"
+			},
+			"privacy_level": "public"
+		},
+		"repository": {
+			"id": 12345,
+			"node_id": "MDEwOlJlcG9zaXRvcnkxMjM0NQ==",
+			"name": "example-repo"
+		},
+		"organization": {
+			"login": "example-org",
+			"id": 67890
+		},
+		"sender": {
+			"login": "example-user",
+			"id": 1111
+		},
+		"installation": {
+			"id": 2222
+		}
+	}`
+
+	testJSONMarshal(t, u, want)
+}
+
+func TestSponsorshipChanges_Marshal(t *testing.T) {
+	testJSONMarshal(t, &SponsorshipChanges{}, "{}")
+
+	u := &SponsorshipChanges{
+		Tier: &SponsorshipTier{
+			From: String("premium"),
+		},
+		PrivacyLevel: String("private"),
+	}
+
+	want := `{
+		"tier": {
+			"from": "premium"
+		},
+		"privacy_level": "private"
+	}`
+
+	testJSONMarshal(t, u, want)
+}
+
+func TestSponsorshipTier_Marshal(t *testing.T) {
+	testJSONMarshal(t, &SponsorshipTier{}, "{}")
+
+	u := &SponsorshipTier{
+		From: String("gold"),
+	}
+
+	want := `{
+		"from": "gold"
+	}`
+
+	testJSONMarshal(t, u, want)
+}

github/messages.go

@@ -102,6 +102,7 @@ var (
 		"secret_scanning_alert":          &SecretScanningAlertEvent{},
 		"security_advisory":              &SecurityAdvisoryEvent{},
 		"security_and_analysis":          &SecurityAndAnalysisEvent{},
+		"sponsorship":                    &SponsorshipEvent{},
 		"star":                           &StarEvent{},
 		"status":                         &StatusEvent{},
 		"team":                           &TeamEvent{},

github/messages_test.go

@@ -468,6 +468,10 @@ func TestParseWebHook(t *testing.T) {
 			payload:     &SecurityAndAnalysisEvent{},
 			messageType: "security_and_analysis",
 		},
+		{
+			payload:     &SponsorshipEvent{},
+			messageType: "sponsorship",
+		},
 		{
 			payload:     &StarEvent{},
 			messageType: "star",