diff --git a/datamodel/high/base/contact_test.go b/datamodel/high/base/contact_test.go
new file mode 100644
index 0000000..4cb0970
--- /dev/null
+++ b/datamodel/high/base/contact_test.go
@@ -0,0 +1,36 @@
+// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
+// SPDX-License-Identifier: MIT
+
+package base
+
+import (
+	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
+	lowbase "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
+	"testing"
+)
+
+func TestNewContact(t *testing.T) {
+
+	var cNode yaml.Node
+
+	yml := `name: pizza
+url: https://pb33f.io
+email: buckaroo@pb33f.io`
+
+	_ = yaml.Unmarshal([]byte(yml), &cNode)
+
+	// build low
+	var lowContact lowbase.Contact
+	_ = lowmodel.BuildModel(&cNode, &lowContact)
+
+	// build high
+	highContact := NewContact(&lowContact)
+
+	assert.Equal(t, "pizza", highContact.Name)
+	assert.Equal(t, "https://pb33f.io", highContact.URL)
+	assert.Equal(t, "buckaroo@pb33f.io", highContact.Email)
+	assert.Equal(t, 1, highContact.GoLow().Name.KeyNode.Line)
+
+}
diff --git a/datamodel/high/base/discriminator_test.go b/datamodel/high/base/discriminator_test.go
new file mode 100644
index 0000000..2a7e5db
--- /dev/null
+++ b/datamodel/high/base/discriminator_test.go
@@ -0,0 +1,35 @@
+// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
+// SPDX-License-Identifier: MIT
+
+package base
+
+import (
+    lowmodel "github.com/pb33f/libopenapi/datamodel/low"
+    lowbase "github.com/pb33f/libopenapi/datamodel/low/base"
+    "github.com/stretchr/testify/assert"
+    "gopkg.in/yaml.v3"
+    "testing"
+)
+
+func TestNewDiscriminator(t *testing.T) {
+
+    var cNode yaml.Node
+
+    yml := `propertyName: coffee
+mapping:
+  fogCleaner: in the morning`
+
+    _ = yaml.Unmarshal([]byte(yml), &cNode)
+
+    // build low
+    var lowDiscriminator lowbase.Discriminator
+    _ = lowmodel.BuildModel(&cNode, &lowDiscriminator)
+
+    // build high
+    highDiscriminator := NewDiscriminator(&lowDiscriminator)
+
+    assert.Equal(t, "coffee", highDiscriminator.PropertyName)
+    assert.Equal(t, "in the morning", highDiscriminator.Mapping["fogCleaner"])
+    assert.Equal(t, 3, highDiscriminator.GoLow().FindMappingValue("fogCleaner").ValueNode.Line)
+
+}
diff --git a/datamodel/high/base/example.go b/datamodel/high/base/example.go
index 4475522..36d3e0e 100644
--- a/datamodel/high/base/example.go
+++ b/datamodel/high/base/example.go
@@ -23,7 +23,7 @@ func NewExample(example *low.Example) *Example {
 	e.low = example
 	e.Summary = example.Summary.Value
 	e.Description = example.Description.Value
-	e.Value = example.Value
+	e.Value = example.Value.Value
 	e.ExternalValue = example.ExternalValue.Value
 	e.Extensions = high.ExtractExtensions(example.Extensions)
 	return e
diff --git a/datamodel/high/base/example_test.go b/datamodel/high/base/example_test.go
new file mode 100644
index 0000000..e27641d
--- /dev/null
+++ b/datamodel/high/base/example_test.go
@@ -0,0 +1,41 @@
+// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
+// SPDX-License-Identifier: MIT
+
+package base
+
+import (
+	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
+	lowbase "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
+	"testing"
+)
+
+func TestNewExample(t *testing.T) {
+
+	var cNode yaml.Node
+
+	yml := `summary: an example
+description: something more
+value: a thing
+externalValue: https://pb33f.io
+x-hack: code`
+
+	_ = yaml.Unmarshal([]byte(yml), &cNode)
+
+	// build low
+	var lowExample lowbase.Example
+	_ = lowmodel.BuildModel(&cNode, &lowExample)
+
+	_ = lowExample.Build(cNode.Content[0], nil)
+
+	// build high
+	highExample := NewExample(&lowExample)
+
+	assert.Equal(t, "an example", highExample.Summary)
+	assert.Equal(t, "something more", highExample.Description)
+	assert.Equal(t, "https://pb33f.io", highExample.ExternalValue)
+	assert.Equal(t, "code", highExample.Extensions["x-hack"])
+	assert.Equal(t, "a thing", highExample.Value)
+	assert.Equal(t, 4, highExample.GoLow().ExternalValue.ValueNode.Line)
+}
diff --git a/datamodel/low/2.0/parameter_test.go b/datamodel/low/2.0/parameter_test.go
new file mode 100644
index 0000000..47dbece
--- /dev/null
+++ b/datamodel/low/2.0/parameter_test.go
@@ -0,0 +1,49 @@
+// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
+// SPDX-License-Identifier: MIT
+
+package v2
+
+import (
+	"github.com/pb33f/libopenapi/datamodel/low"
+	"github.com/pb33f/libopenapi/index"
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
+	"testing"
+)
+
+func TestParameter_Build(t *testing.T) {
+
+	yml := `$ref: break`
+
+	var idxNode yaml.Node
+	mErr := yaml.Unmarshal([]byte(yml), &idxNode)
+	assert.NoError(t, mErr)
+	idx := index.NewSpecIndex(&idxNode)
+
+	var n Parameter
+	err := low.BuildModel(&idxNode, &n)
+	assert.NoError(t, err)
+
+	err = n.Build(idxNode.Content[0], idx)
+	assert.Error(t, err)
+
+}
+
+func TestParameter_Build_Items(t *testing.T) {
+
+	yml := `items:
+  $ref: break`
+
+	var idxNode yaml.Node
+	mErr := yaml.Unmarshal([]byte(yml), &idxNode)
+	assert.NoError(t, mErr)
+	idx := index.NewSpecIndex(&idxNode)
+
+	var n Parameter
+	err := low.BuildModel(&idxNode, &n)
+	assert.NoError(t, err)
+
+	err = n.Build(idxNode.Content[0], idx)
+	assert.Error(t, err)
+
+}