diff --git a/internal/resource/convert_test.go b/internal/resource/convert_test.go
new file mode 100644
index 0000000..f52e518
--- /dev/null
+++ b/internal/resource/convert_test.go
@@ -0,0 +1,70 @@
+package resource_test
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/opdev/productctl/internal/resource"
+)
+
+var _ = Describe("Convert", func() {
+	type FooOriginal struct {
+		IntKey    int    `json:"int_key"`
+		StringKey string `json:"string_key"`
+	}
+
+	type FooLike struct {
+		MyInt    int    `json:"int_key"`
+		MyString string `json:"string_key"`
+	}
+
+	When("converting between types through the JSONConvert roundtrip", func() {
+		When("like struct markers are used", func() {
+			var (
+				original FooOriginal
+				similar  FooLike
+			)
+
+			BeforeEach(func() {
+				original = FooOriginal{
+					IntKey:    10,
+					StringKey: "ten",
+				}
+
+				similar = FooLike{}
+			})
+
+			It("should round trip successfully", func() {
+				var err error
+				similar, err = resource.JSONConvert[FooLike](original)
+				Expect(err).ToNot(HaveOccurred())
+				Expect(similar.MyInt).ToNot(BeZero())
+				Expect(original.IntKey).To(Equal(similar.MyInt))
+				Expect(similar.MyString).ToNot(BeEmpty())
+				Expect(original.StringKey).To(Equal(similar.MyString))
+			})
+		})
+
+		When("unlike types are used", func() {
+			var in string
+			BeforeEach(func() {
+				in = "foo"
+			})
+			It("should throw an error", func() {
+				var err error
+				_, err = resource.JSONConvert[struct{}](in)
+				Expect(err).To(HaveOccurred())
+			})
+		})
+		When("the input type cannot be marshaled", func() {
+			var in func()
+			BeforeEach(func() {
+				in = func() {}
+			})
+			It("should throw an error", func() {
+				_, err := resource.JSONConvert[string](in)
+				Expect(err).To(HaveOccurred())
+			})
+		})
+	})
+})
diff --git a/internal/resource/io_test.go b/internal/resource/io_test.go
new file mode 100644
index 0000000..ece59fd
--- /dev/null
+++ b/internal/resource/io_test.go
@@ -0,0 +1,59 @@
+package resource_test
+
+import (
+	"bytes"
+	"io"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/opdev/productctl/internal/resource"
+)
+
+var _ = Describe("IO", func() {
+	When("provided a reader", func() {
+		var fixture io.Reader
+		When("it contains a product listing", func() {
+			BeforeEach(func() {
+				fixture = bytes.NewBufferString(`---
+kind: ProductListing
+spec:
+  descriptions:
+    long: This can contain long form content about your product.
+    short: A brief synopsis
+  name: Test Product 1
+  type: container stack
+with:
+  components:
+  - certification_status: Started
+    container:
+      distribution_method: rhcc
+      hosted_registry: false
+      os_content_type: Red Hat Universal Base Image (UBI)
+      type: container
+    name: test-component
+    project_status: active
+    type: Containers`)
+			})
+
+			It("should marshal correctly", func() {
+				listing, err := resource.ReadProductListing(fixture)
+				Expect(err).ToNot(HaveOccurred())
+				Expect(listing.Kind).To(Equal("ProductListing"))
+				Expect(listing.HasComponents()).To(BeTrue())
+				Expect(listing.Spec.Name).To(Equal("Test Product 1"))
+				Expect(listing.With.Components[0].Name).To(Equal("test-component"))
+			})
+		})
+
+		When("it does not contain a product listing", func() {
+			BeforeEach(func() {
+				fixture = bytes.NewBufferString("package resource")
+			})
+			It("should not marshal correctly", func() {
+				_, err := resource.ReadProductListing(fixture)
+				Expect(err).To(HaveOccurred())
+			})
+		})
+	})
+})
diff --git a/internal/resource/productlisting_test.go b/internal/resource/productlisting_test.go
new file mode 100644
index 0000000..39e7c44
--- /dev/null
+++ b/internal/resource/productlisting_test.go
@@ -0,0 +1,37 @@
+package resource_test
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/opdev/productctl/internal/genpyxis"
+	"github.com/opdev/productctl/internal/resource"
+)
+
+var _ = Describe("Productlisting", func() {
+	DescribeTable(
+		"when using boolean helper methods for product listing state",
+		func(actual, expected bool) {
+			Expect(actual).To(Equal(expected))
+		},
+		Entry("name is present", (&resource.ProductListing{Name: "foo"}).HasName(), true),
+		Entry("name is missing", (&resource.ProductListing{}).HasName(), false),
+		Entry("ID is present", (&resource.ProductListing{ID: "123"}).HasID(), true),
+		Entry("ID is missing", (&resource.ProductListing{}).HasID(), false),
+	)
+	When("converting a ContactInfoProvider into a corresponding product listing contact list", func() {
+		var provider *genpyxis.ProductListingSupportedFieldsContactsContactsItems
+		BeforeEach(func() {
+			provider = &genpyxis.ProductListingSupportedFieldsContactsContactsItems{
+				Email_address: "user@example.com",
+				Type:          "testcontact",
+			}
+		})
+		It("should map the Email Address and Type to the right places", func() {
+			contacts := resource.ContactsFrom([]*genpyxis.ProductListingSupportedFieldsContactsContactsItems{provider})
+			Expect(contacts).To(HaveLen(1))
+			Expect(contacts[0].EmailAddress).To(Equal(provider.GetEmail_address()))
+			Expect(contacts[0].Type).To(Equal(provider.GetType()))
+		})
+	})
+})
diff --git a/internal/resource/resource.go b/internal/resource/resource.go
index 1b0c4e0..7caf211 100644
--- a/internal/resource/resource.go
+++ b/internal/resource/resource.go
@@ -44,6 +44,7 @@ func (d *ProductListingDeclaration) Sanitize() {
 		d.With.Components[i].ProjectStatus = "active"
 		d.With.Components[i].CreationDate = nil
 		d.With.Components[i].LastUpdateDate = nil
+		d.With.Components[i].CertificationDate = nil
 	}
 }
 
diff --git a/internal/resource/resource_suite_test.go b/internal/resource/resource_suite_test.go
new file mode 100644
index 0000000..67535c5
--- /dev/null
+++ b/internal/resource/resource_suite_test.go
@@ -0,0 +1,13 @@
+package resource_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestResource(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Resource Suite")
+}
diff --git a/internal/resource/resource_test.go b/internal/resource/resource_test.go
new file mode 100644
index 0000000..26a057a
--- /dev/null
+++ b/internal/resource/resource_test.go
@@ -0,0 +1,87 @@
+package resource_test
+
+import (
+	"time"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/opdev/productctl/internal/resource"
+)
+
+var _ = Describe("Resource", func() {
+	When("working with product listing declarations", func() {
+		var declaration *resource.ProductListingDeclaration
+
+		When("sanitizing the declaration", func() {
+			BeforeEach(func() {
+				new := resource.NewProductListing()
+				new.Spec = resource.ProductListing{
+					ID:             "abc123",
+					Name:           "test-fixture",
+					OrgID:          1234,
+					LastUpdateDate: &time.Time{},
+					Type:           resource.ProductListingTypeContainerStack,
+					CreationDate:   &time.Time{},
+				}
+				new.With = resource.Inclusions{
+					Components: []*resource.Component{
+						{
+							ID:                "c123",
+							CertificationDate: &time.Time{},
+							Name:              "cname",
+							OrgID:             1234,
+							ProjectStatus:     "unset",
+							Type:              resource.ComponentTypeContainer,
+							CreationDate:      &time.Time{},
+							LastUpdateDate:    &time.Time{},
+						},
+					},
+				}
+
+				declaration = &new
+			})
+
+			JustBeforeEach(func() {
+				declaration.Sanitize()
+			})
+			It("should unset created, update, etc. dates", func() {
+				Expect(declaration.Spec.LastUpdateDate).To(BeNil())
+				Expect(declaration.Spec.CreationDate).To(BeNil())
+				for _, c := range declaration.With.Components {
+					Expect(c.LastUpdateDate).To(BeNil())
+					Expect(c.CertificationDate).To(BeNil())
+				}
+			})
+			It("should unset the top-level ID and all component IDs", func() {
+				Expect(declaration.Spec.ID).To(BeEmpty())
+				Expect(declaration.Spec.OrgID).To(BeZero())
+				for _, c := range declaration.With.Components {
+					Expect(c.ID).To(BeEmpty())
+					Expect(c.OrgID).To(BeZero())
+				}
+			})
+			It("should reset the component statuses", func() {
+				for _, c := range declaration.With.Components {
+					Expect(c.ProjectStatus).To(Equal(resource.ProjectStatusActive))
+				}
+			})
+			It("should leave component information intact", func() {
+				Expect(declaration.Spec.Name).To(Equal("test-fixture"))
+				Expect(declaration.Spec.Type).To(Equal(resource.ProductListingTypeContainerStack))
+				for _, c := range declaration.With.Components {
+					Expect(c.Name).To(Equal("cname"))
+				}
+			})
+		})
+
+		When("the declaration has components", func() {
+			BeforeEach(func() {
+				declaration.With = resource.Inclusions{Components: []*resource.Component{{ID: "id"}}}
+			})
+			It("should return a corresponding boolean from the helper function", func() {
+				Expect(declaration.HasComponents()).To(BeTrue())
+			})
+		})
+	})
+})