Added example object to what-changed feature.

Ready to tackle the main event now. The Schema!

Signed-off-by: Dave Shanley <dave@quobix.com>

what-changed/example_test.go

@@ -0,0 +1,112 @@
+// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
+// SPDX-License-Identifier: MIT
+
+package what_changed
+
+import (
+	"github.com/pb33f/libopenapi/datamodel/low"
+	"github.com/pb33f/libopenapi/datamodel/low/base"
+	v3 "github.com/pb33f/libopenapi/datamodel/low/v3"
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
+	"testing"
+)
+
+func TestCompareExamples_SummaryModified(t *testing.T) {
+
+	left := `summary: magic herbs`
+	right := `summary: cure all`
+
+	var lNode, rNode yaml.Node
+	_ = yaml.Unmarshal([]byte(left), &lNode)
+	_ = yaml.Unmarshal([]byte(right), &rNode)
+
+	// create low level objects
+	var lDoc base.Example
+	var rDoc base.Example
+	_ = low.BuildModel(&lNode, &lDoc)
+	_ = low.BuildModel(&rNode, &rDoc)
+	_ = lDoc.Build(lNode.Content[0], nil)
+	_ = rDoc.Build(rNode.Content[0], nil)
+
+	extChanges := CompareExamples(&lDoc, &rDoc)
+
+	assert.Equal(t, extChanges.TotalChanges(), 1)
+	assert.Equal(t, Modified, extChanges.Changes[0].ChangeType)
+	assert.Equal(t, v3.SummaryLabel, extChanges.Changes[0].Property)
+	assert.Equal(t, "magic herbs", extChanges.Changes[0].Original)
+	assert.Equal(t, "cure all", extChanges.Changes[0].New)
+}
+
+func TestCompareExamples_SummaryAdded(t *testing.T) {
+
+	left := `summary: magic herbs`
+	right := `summary: magic herbs
+description: cure all`
+
+	var lNode, rNode yaml.Node
+	_ = yaml.Unmarshal([]byte(left), &lNode)
+	_ = yaml.Unmarshal([]byte(right), &rNode)
+
+	// create low level objects
+	var lDoc base.Example
+	var rDoc base.Example
+	_ = low.BuildModel(&lNode, &lDoc)
+	_ = low.BuildModel(&rNode, &rDoc)
+	_ = lDoc.Build(lNode.Content[0], nil)
+	_ = rDoc.Build(rNode.Content[0], nil)
+
+	extChanges := CompareExamples(&lDoc, &rDoc)
+
+	assert.Equal(t, extChanges.TotalChanges(), 1)
+	assert.Equal(t, PropertyAdded, extChanges.Changes[0].ChangeType)
+	assert.Equal(t, v3.DescriptionLabel, extChanges.Changes[0].Property)
+	assert.Equal(t, "cure all", extChanges.Changes[0].New)
+}
+
+func TestCompareExamples_ExtensionAdded(t *testing.T) {
+
+	left := `summary: magic herbs`
+	right := `summary: magic herbs
+x-herbs: cure all`
+
+	var lNode, rNode yaml.Node
+	_ = yaml.Unmarshal([]byte(left), &lNode)
+	_ = yaml.Unmarshal([]byte(right), &rNode)
+
+	// create low level objects
+	var lDoc base.Example
+	var rDoc base.Example
+	_ = low.BuildModel(&lNode, &lDoc)
+	_ = low.BuildModel(&rNode, &rDoc)
+	_ = lDoc.Build(lNode.Content[0], nil)
+	_ = rDoc.Build(rNode.Content[0], nil)
+
+	extChanges := CompareExamples(&lDoc, &rDoc)
+
+	assert.Equal(t, extChanges.TotalChanges(), 1)
+	assert.Equal(t, ObjectAdded, extChanges.ExtensionChanges.Changes[0].ChangeType)
+	assert.Equal(t, "x-herbs", extChanges.ExtensionChanges.Changes[0].Property)
+	assert.Equal(t, "cure all", extChanges.ExtensionChanges.Changes[0].New)
+}
+
+func TestCompareExamples_Identical(t *testing.T) {
+
+	left := `summary: magic herbs`
+	right := `summary: magic herbs`
+
+	var lNode, rNode yaml.Node
+	_ = yaml.Unmarshal([]byte(left), &lNode)
+	_ = yaml.Unmarshal([]byte(right), &rNode)
+
+	// create low level objects
+	var lDoc base.Example
+	var rDoc base.Example
+	_ = low.BuildModel(&lNode, &lDoc)
+	_ = low.BuildModel(&rNode, &rDoc)
+	_ = lDoc.Build(lNode.Content[0], nil)
+	_ = rDoc.Build(rNode.Content[0], nil)
+
+	extChanges := CompareExamples(&lDoc, &rDoc)
+	assert.Nil(t, extChanges)
+}