Update mock generator to allow disabling required check in schema renderer

renderer/mock_generator.go

@@ -62,6 +62,13 @@ func (mg *MockGenerator) SetPretty() {
 	mg.pretty = true
 }
 
+// DisableRequiredCheck disables renderer required property check when rendering
+// a schema for mocks. This means that all properties will be rendered, not just
+// the required ones.
+func (mg *MockGenerator) DisableRequiredCheck() {
+	mg.renderer.DisableRequiredCheck()
+}
+
 // GenerateMock generates a mock for a given high-level mockable struct. The mockable struct must contain the following fields:
 // Example: any type, this is the default example to use if no examples are present.
 // Examples: *orderedmap.Map[string, *base.Example], this is a map of examples keyed by name.

renderer/mock_generator_test.go

@@ -12,6 +12,7 @@ import (
 	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 	"gopkg.in/yaml.v3"
 	"strings"
 	"testing"
@@ -410,3 +411,65 @@ properties:
 	assert.Equal(t, "robocop", m["name"].(string))
 	assert.Equal(t, "perhaps the best cyberpunk movie ever made.", m["description"].(string))
 }
+
+func TestMockGenerator_GeneratePropertyExamples(t *testing.T) {
+	fake := createFakeMock(`type: object
+required:
+  - id
+  - name
+properties:
+  id:
+    type: integer
+    example: 123
+  name:
+    type: string
+    example: "John Doe"
+  active:
+    type: boolean
+    example: true
+  balance:
+    type: number
+    format: float
+    example: 99.99
+  tags:
+    type: array
+    items:
+      type: string
+    example: ["tag1", "tag2", "tag3"]
+`, nil, nil)
+
+	for name, tc := range map[string]struct {
+		mockGen      func() *MockGenerator
+		expectedMock string
+	}{
+		"OnlyRequired": {
+			mockGen: func() *MockGenerator {
+				mg := NewMockGenerator(JSON)
+				return mg
+			},
+			expectedMock: `{"id":123,"name":"John Doe"}`,
+		},
+		"All": {
+			mockGen: func() *MockGenerator {
+				mg := NewMockGenerator(JSON)
+
+				// Test schema rendering for property examples, regardless of
+				// whether the property is marked as required or not.
+				mg.DisableRequiredCheck()
+
+				return mg
+			},
+			expectedMock: `{"active":true,"balance":99.99,"id":123,"name":"John Doe","tags":["tag1","tag2","tag3"]}`,
+		},
+	} {
+		tc := tc
+		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
+			mock, err := tc.mockGen().GenerateMock(fake, "")
+			require.NoError(t, err)
+
+			assert.Equal(t, tc.expectedMock, string(mock))
+		})
+	}
+}