diff --git a/spew/common_test.go b/spew/common_test.go
new file mode 100644
index 0000000..78b1f81
--- /dev/null
+++ b/spew/common_test.go
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew_test
+
+import (
+	"fmt"
+)
+
+// custom type to test Stinger interface on pointer receiver.
+type pstringer string
+
+// String implements the Stringer interface for testing invocation of custom
+// stringers on types with only pointer receivers.
+func (s *pstringer) String() string {
+	return "stringer " + string(*s)
+}
+
+// xref1 and xref2 are cross referencing structs for testing circular reference
+//  detection.
+type xref1 struct {
+	ps2 *xref2
+}
+type xref2 struct {
+	ps1 *xref1
+}
+
+// indirCir1, indirCir2, and indirCir3 are used to generate an indirect circular
+// reference for testing detection.
+type indirCir1 struct {
+	ps2 *indirCir2
+}
+type indirCir2 struct {
+	ps3 *indirCir3
+}
+type indirCir3 struct {
+	ps1 *indirCir1
+}
+
+// panicer is used to intentionally cause a panic for testing spew properly
+// handles them
+type panicer int
+
+func (p panicer) String() string {
+	panic("test panic")
+}
+
+// stringizeWants converts a slice of wanted test output into a format suitable
+// for an test error message.
+func stringizeWants(wants []string) string {
+	s := ""
+	for i, want := range wants {
+		if i > 0 {
+			s += fmt.Sprintf("want%d: %s", i+1, want)
+		} else {
+			s += "want: " + want
+		}
+	}
+	return s
+}
+
+// testFailed returns whether or not a test failed by checking if the result
+// of the test is in the slice of wanted strings.
+func testFailed(result string, wants []string) bool {
+	for _, want := range wants {
+		if result == want {
+			return false
+		}
+	}
+	return true
+}
diff --git a/spew/dump_test.go b/spew/dump_test.go
index 1310906..f4de975 100644
--- a/spew/dump_test.go
+++ b/spew/dump_test.go
@@ -63,36 +63,6 @@ import (
 	"unsafe"
 )
 
-// custom type to test Stinger interface on pointer receiver.
-type pstringer string
-
-// String implements the Stringer interface for testing invocation of custom
-// stringers on types with only pointer receivers.
-func (s *pstringer) String() string {
-	return "stringer " + string(*s)
-}
-
-// xref1 and xref2 are cross referencing structs for testing circular reference
-//  detection.
-type xref1 struct {
-	ps2 *xref2
-}
-type xref2 struct {
-	ps1 *xref1
-}
-
-// indirCir1, indirCir2, and indirCir3 are used to generate an indirect circular
-// reference for testing detection.
-type indirCir1 struct {
-	ps2 *indirCir2
-}
-type indirCir2 struct {
-	ps3 *indirCir3
-}
-type indirCir3 struct {
-	ps1 *indirCir1
-}
-
 // dumpTest is used to describe a test to be perfomed against the Dump method.
 type dumpTest struct {
 	in    interface{}
diff --git a/spew/spew_test.go b/spew/spew_test.go
index 76df103..d2d620e 100644
--- a/spew/spew_test.go
+++ b/spew/spew_test.go
@@ -25,39 +25,6 @@ import (
 	"testing"
 )
 
-// stringizeWants converts a slice of wanted test output into a format suitable
-// for an test error message.
-func stringizeWants(wants []string) string {
-	s := ""
-	for i, want := range wants {
-		if i > 0 {
-			s += fmt.Sprintf("want%d: %s", i+1, want)
-		} else {
-			s += "want: " + want
-		}
-	}
-	return s
-}
-
-// testFailed returns whether or not a test failed by checking if the result
-// of the test is in the slice of wanted strings.
-func testFailed(result string, wants []string) bool {
-	for _, want := range wants {
-		if result == want {
-			return false
-		}
-	}
-	return true
-}
-
-// panicer is used to intentionally cause a panic for testing spew properly
-// handles them
-type panicer int
-
-func (p panicer) String() string {
-	panic("test panic")
-}
-
 // spewFunc is used to identify which public function of the spew package or
 // ConfigState a test applies to.
 type spewFunc int