diff --git a/followers_test.go b/followers_test.go
new file mode 100644
index 0000000..06c7b5e
--- /dev/null
+++ b/followers_test.go
@@ -0,0 +1,39 @@
+package activitypub
+
+import "testing"
+
+func TestFollowers_Append(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowers_Collection(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowers_GetID(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowers_GetLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowers_GetType(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowers_IsLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowers_IsObject(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowers_UnmarshalJSON(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowersNew(t *testing.T) {
+	t.Skipf("TODO")
+}
diff --git a/following_test.go b/following_test.go
new file mode 100644
index 0000000..faa706c
--- /dev/null
+++ b/following_test.go
@@ -0,0 +1,39 @@
+package activitypub
+
+import "testing"
+
+func TestFollowing_Append(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowing_Collection(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowing_GetID(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowing_GetLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowing_GetType(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowing_IsLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowing_IsObject(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowing_UnmarshalJSON(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestFollowingNew(t *testing.T) {
+	t.Skipf("TODO")
+}
diff --git a/inbox_test.go b/inbox_test.go
index 9a61d5b..79c6f8f 100644
--- a/inbox_test.go
+++ b/inbox_test.go
@@ -78,3 +78,31 @@ func TestInbox_Append(t *testing.T) {
 		t.Errorf("First item in %T.%T does not match %q", i, i.OrderedItems, val.ID)
 	}
 }
+
+func TestInbox_Collection(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestInbox_GetID(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestInbox_GetLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestInbox_GetType(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestInbox_IsLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestInbox_IsObject(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestInbox_UnmarshalJSON(t *testing.T) {
+	t.Skipf("TODO")
+}
diff --git a/liked_test.go b/liked_test.go
index df9f159..c0f217e 100644
--- a/liked_test.go
+++ b/liked_test.go
@@ -79,3 +79,43 @@ func TestLiked_Append(t *testing.T) {
 		t.Errorf("First item in %T.%T does not match %q", l, l.OrderedItems, val.ID)
 	}
 }
+
+func TestLiked_Collection(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLiked_GetID(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLiked_GetLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLiked_GetType(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLiked_IsLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLiked_IsObject(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikedCollection_Collection(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikedCollection_GetLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikedCollection_IsLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikedCollection_IsObject(t *testing.T) {
+	t.Skipf("TODO")
+}
diff --git a/likes_test.go b/likes_test.go
new file mode 100644
index 0000000..0d37a54
--- /dev/null
+++ b/likes_test.go
@@ -0,0 +1,63 @@
+package activitypub
+
+import "testing"
+
+func TestLikes_Append(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikes_Collection(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikes_GetID(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikes_GetLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikes_GetType(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikes_IsLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikes_IsObject(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikesCollection_Append(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikesCollection_Collection(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikesCollection_GetID(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikesCollection_GetLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikesCollection_GetType(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikesCollection_IsLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikesCollection_IsObject(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestLikesNew(t *testing.T) {
+	t.Skipf("TODO")
+}
diff --git a/outbox_test.go b/outbox_test.go
index 9a11c06..e05934b 100644
--- a/outbox_test.go
+++ b/outbox_test.go
@@ -80,3 +80,31 @@ func TestOutbox_Append(t *testing.T) {
 		t.Errorf("First item in %T.%T does not match %q", o, o.OrderedItems, val.ID)
 	}
 }
+
+func TestOutbox_Collection(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestOutbox_GetID(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestOutbox_GetLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestOutbox_GetType(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestOutbox_IsLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestOutbox_IsObject(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestOutbox_UnmarshalJSON(t *testing.T) {
+	t.Skipf("TODO")
+}
diff --git a/shares_test.go b/shares_test.go
new file mode 100644
index 0000000..820d104
--- /dev/null
+++ b/shares_test.go
@@ -0,0 +1,39 @@
+package activitypub
+
+import "testing"
+
+func TestShares_Append(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestShares_Collection(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestShares_GetID(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestShares_GetLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestShares_GetType(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestShares_IsLink(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestShares_IsObject(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestShares_UnmarshalJSON(t *testing.T) {
+	t.Skipf("TODO")
+}
+
+func TestSharesNew(t *testing.T) {
+	t.Skipf("TODO")
+}
diff --git a/validation_test.go b/validation_test.go
new file mode 100644
index 0000000..fb6a091
--- /dev/null
+++ b/validation_test.go
@@ -0,0 +1,7 @@
+package activitypub
+
+import "testing"
+
+func TestDefaultValidator_Validate(t *testing.T) {
+	t.Skipf("TODO")
+}