diff --git a/database/deployment_test.go b/database/deployment_test.go
new file mode 100644
index 00000000..60f9d375
--- /dev/null
+++ b/database/deployment_test.go
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: Apache-2.0
+
+package database
+
+import (
+	"database/sql"
+	"reflect"
+	"testing"
+
+	"github.com/go-vela/types/library"
+	"github.com/go-vela/types/raw"
+	"github.com/google/go-cmp/cmp"
+	"github.com/lib/pq"
+)
+
+func TestDatabase_Deployment_Nullify(t *testing.T) {
+	// setup types
+	var d *Deployment
+
+	want := &Deployment{
+		ID:          sql.NullInt64{Int64: 0, Valid: false},
+		Number:      sql.NullInt64{Int64: 0, Valid: false},
+		RepoID:      sql.NullInt64{Int64: 0, Valid: false},
+		URL:         sql.NullString{String: "", Valid: false},
+		User:        sql.NullString{String: "", Valid: false},
+		Commit:      sql.NullString{String: "", Valid: false},
+		Ref:         sql.NullString{String: "", Valid: false},
+		Task:        sql.NullString{String: "", Valid: false},
+		Target:      sql.NullString{String: "", Valid: false},
+		Description: sql.NullString{String: "", Valid: false},
+		Payload:     nil,
+		Builds:      nil,
+	}
+
+	// setup tests
+	tests := []struct {
+		deployment *Deployment
+		want       *Deployment
+	}{
+		{
+			deployment: testDeployment(),
+			want:       testDeployment(),
+		},
+		{
+			deployment: d,
+			want:       nil,
+		},
+		{
+			deployment: new(Deployment),
+			want:       want,
+		},
+	}
+
+	// run tests
+	for _, test := range tests {
+		got := test.deployment.Nullify()
+
+		if !reflect.DeepEqual(got, test.want) {
+			t.Errorf("Nullify is %v, want %v", got, test.want)
+		}
+	}
+}
+
+func TestDatabase_Deployment_ToLibrary(t *testing.T) {
+	want := new(library.Deployment)
+	want.SetID(1)
+	want.SetNumber(1)
+	want.SetRepoID(1)
+	want.SetURL("https://github.com/github/octocat/deployments/1")
+	want.SetUser("octocat")
+	want.SetCommit("1234")
+	want.SetRef("refs/heads/main")
+	want.SetTask("deploy:vela")
+	want.SetTarget("production")
+	want.SetDescription("Deployment request from Vela")
+	want.SetPayload(raw.StringSliceMap{"foo": "test1"})
+	want.SetBuilds(nil)
+
+	got := testDeployment().ToLibrary(nil)
+	if diff := cmp.Diff(got, want); diff != "" {
+		t.Errorf("(ToLibrary: -want +got):\n%s", diff)
+	}
+}
+
+func TestDatabase_Deployment_Validate(t *testing.T) {
+	// setup types
+	tests := []struct {
+		failure    bool
+		deployment *Deployment
+	}{
+		{
+			failure:    false,
+			deployment: testDeployment(),
+		},
+		{ // no number set for secret
+			failure: true,
+			deployment: &Deployment{
+				ID:     sql.NullInt64{Int64: 1, Valid: true},
+				RepoID: sql.NullInt64{Int64: 1, Valid: true},
+			},
+		},
+		{ // no repoID set for secret
+			failure: true,
+			deployment: &Deployment{
+				ID:     sql.NullInt64{Int64: 1, Valid: true},
+				Number: sql.NullInt64{Int64: 1, Valid: true},
+			},
+		},
+	}
+
+	// run tests
+	for _, test := range tests {
+		err := test.deployment.Validate()
+
+		if test.failure {
+			if err == nil {
+				t.Errorf("Validate should have returned err")
+			}
+
+			continue
+		}
+
+		if err != nil {
+			t.Errorf("Validate returned err: %v", err)
+		}
+	}
+}
+
+func TestDatabase_DeploymentFromLibrary(t *testing.T) {
+	d := new(library.Deployment)
+	d.SetID(1)
+	d.SetNumber(1)
+	d.SetRepoID(1)
+	d.SetURL("https://github.com/github/octocat/deployments/1")
+	d.SetUser("octocat")
+	d.SetCommit("1234")
+	d.SetRef("refs/heads/main")
+	d.SetTask("deploy:vela")
+	d.SetTarget("production")
+	d.SetDescription("Deployment request from Vela")
+	d.SetPayload(raw.StringSliceMap{"foo": "test1"})
+	d.SetBuilds(nil)
+
+	want := testDeployment()
+
+	// run test
+	got := DeploymentFromLibrary(d)
+
+	if diff := cmp.Diff(got, want); diff != "" {
+		t.Errorf("(-want +got):\n%s", diff)
+	}
+}
+
+// testDeployment is a test helper function to create a Deployment type with all fields set to a fake value.
+func testDeployment() *Deployment {
+	return &Deployment{
+		ID:          sql.NullInt64{Int64: 1, Valid: true},
+		Number:      sql.NullInt64{Int64: 1, Valid: true},
+		RepoID:      sql.NullInt64{Int64: 1, Valid: true},
+		URL:         sql.NullString{String: "https://github.com/github/octocat/deployments/1", Valid: true},
+		User:        sql.NullString{String: "octocat", Valid: true},
+		Commit:      sql.NullString{String: "1234", Valid: true},
+		Ref:         sql.NullString{String: "refs/heads/main", Valid: true},
+		Task:        sql.NullString{String: "deploy:vela", Valid: true},
+		Target:      sql.NullString{String: "production", Valid: true},
+		Description: sql.NullString{String: "Deployment request from Vela", Valid: true},
+		Payload:     raw.StringSliceMap{"foo": "test1"},
+		Builds:      pq.StringArray{},
+	}
+}
diff --git a/database/hook_test.go b/database/hook_test.go
index 222c7c6b..a137022c 100644
--- a/database/hook_test.go
+++ b/database/hook_test.go
@@ -91,7 +91,7 @@ func TestDatabase_Hook_ToLibrary(t *testing.T) {
 		Host:         sql.NullString{String: "github.com", Valid: true},
 		Event:        sql.NullString{String: "push", Valid: true},
 		EventAction:  sql.NullString{String: "", Valid: true},
-		Branch:       sql.NullString{String: "master", Valid: true},
+		Branch:       sql.NullString{String: "main", Valid: true},
 		Error:        sql.NullString{String: "", Valid: true},
 		Status:       sql.NullString{String: "success", Valid: true},
 		Link:         sql.NullString{String: "https://github.com/github/octocat/settings/hooks/1", Valid: true},
@@ -185,7 +185,7 @@ func TestDatabase_HookFromLibrary(t *testing.T) {
 		Host:         sql.NullString{String: "github.com", Valid: true},
 		Event:        sql.NullString{String: "pull_request", Valid: true},
 		EventAction:  sql.NullString{String: "opened", Valid: true},
-		Branch:       sql.NullString{String: "master", Valid: true},
+		Branch:       sql.NullString{String: "main", Valid: true},
 		Error:        sql.NullString{String: "", Valid: false},
 		Status:       sql.NullString{String: "success", Valid: true},
 		Link:         sql.NullString{String: "https://github.com/github/octocat/settings/hooks/1", Valid: true},
@@ -231,7 +231,7 @@ func testHook() *Hook {
 		Host:         sql.NullString{String: "github.com", Valid: true},
 		Event:        sql.NullString{String: "push", Valid: true},
 		EventAction:  sql.NullString{String: "", Valid: false},
-		Branch:       sql.NullString{String: "master", Valid: true},
+		Branch:       sql.NullString{String: "main", Valid: true},
 		Error:        sql.NullString{String: "", Valid: false},
 		Status:       sql.NullString{String: "success", Valid: true},
 		Link:         sql.NullString{String: "https://github.com/github/octocat/settings/hooks/1", Valid: true},
diff --git a/go.mod b/go.mod
index 764f3775..161f50a7 100644
--- a/go.mod
+++ b/go.mod
@@ -13,6 +13,7 @@ require (
 
 require (
 	github.com/aymerick/douceur v0.2.0 // indirect
+	github.com/google/go-cmp v0.6.0
 	github.com/gorilla/css v1.0.0 // indirect
 	github.com/kr/pretty v0.2.0 // indirect
 	golang.org/x/net v0.17.0 // indirect
diff --git a/go.sum b/go.sum
index 30a8143f..8dd372a4 100644
--- a/go.sum
+++ b/go.sum
@@ -10,6 +10,8 @@ github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/gorilla/css v1.0.0 h1:BQqNyPTi50JCFMTw/b67hByjMVXZRwGha6wxVGkeihY=
 github.com/gorilla/css v1.0.0/go.mod h1:Dn721qIggHpt4+EFCcTLTU/vk5ySda2ReITrtgBl60c=
 github.com/kr/pretty v0.2.0 h1:s5hAObm+yFO5uHYt5dYjxi2rXrsnmRpJx4OYvIWUaQs=