diff --git a/_site/params_test.go b/_site/params_test.go
new file mode 100644
index 0000000..9f1d3bd
--- /dev/null
+++ b/_site/params_test.go
@@ -0,0 +1,142 @@
+package gophercloud
+
+import (
+	"net/url"
+	"reflect"
+	"testing"
+	"time"
+
+	th "github.com/rackspace/gophercloud/testhelper"
+)
+
+func TestMaybeString(t *testing.T) {
+	testString := ""
+	var expected *string
+	actual := MaybeString(testString)
+	th.CheckDeepEquals(t, expected, actual)
+
+	testString = "carol"
+	expected = &testString
+	actual = MaybeString(testString)
+	th.CheckDeepEquals(t, expected, actual)
+}
+
+func TestMaybeInt(t *testing.T) {
+	testInt := 0
+	var expected *int
+	actual := MaybeInt(testInt)
+	th.CheckDeepEquals(t, expected, actual)
+
+	testInt = 4
+	expected = &testInt
+	actual = MaybeInt(testInt)
+	th.CheckDeepEquals(t, expected, actual)
+}
+
+func TestBuildQueryString(t *testing.T) {
+	opts := struct {
+		J int    `q:"j"`
+		R string `q:"r,required"`
+		C bool   `q:"c"`
+	}{
+		J: 2,
+		R: "red",
+		C: true,
+	}
+	expected := &url.URL{RawQuery: "j=2&r=red&c=true"}
+	actual, err := BuildQueryString(&opts)
+	if err != nil {
+		t.Errorf("Error building query string: %v", err)
+	}
+	th.CheckDeepEquals(t, expected, actual)
+
+	opts = struct {
+		J int    `q:"j"`
+		R string `q:"r,required"`
+		C bool   `q:"c"`
+	}{
+		J: 2,
+		C: true,
+	}
+	_, err = BuildQueryString(&opts)
+	if err == nil {
+		t.Errorf("Expected error: 'Required field not set'")
+	}
+	th.CheckDeepEquals(t, expected, actual)
+
+	_, err = BuildQueryString(map[string]interface{}{"Number": 4})
+	if err == nil {
+		t.Errorf("Expected error: 'Options type is not a struct'")
+	}
+}
+
+func TestBuildHeaders(t *testing.T) {
+	testStruct := struct {
+		Accept string `h:"Accept"`
+		Num    int    `h:"Number,required"`
+		Style  bool   `h:"Style"`
+	}{
+		Accept: "application/json",
+		Num:    4,
+		Style:  true,
+	}
+	expected := map[string]string{"Accept": "application/json", "Number": "4", "Style": "true"}
+	actual, err := BuildHeaders(&testStruct)
+	th.CheckNoErr(t, err)
+	th.CheckDeepEquals(t, expected, actual)
+
+	testStruct.Num = 0
+	_, err = BuildHeaders(&testStruct)
+	if err == nil {
+		t.Errorf("Expected error: 'Required header not set'")
+	}
+
+	_, err = BuildHeaders(map[string]interface{}{"Number": 4})
+	if err == nil {
+		t.Errorf("Expected error: 'Options type is not a struct'")
+	}
+}
+
+func TestIsZero(t *testing.T) {
+	var testMap map[string]interface{}
+	testMapValue := reflect.ValueOf(testMap)
+	expected := true
+	actual := isZero(testMapValue)
+	th.CheckEquals(t, expected, actual)
+	testMap = map[string]interface{}{"empty": false}
+	testMapValue = reflect.ValueOf(testMap)
+	expected = false
+	actual = isZero(testMapValue)
+	th.CheckEquals(t, expected, actual)
+
+	var testArray [2]string
+	testArrayValue := reflect.ValueOf(testArray)
+	expected = true
+	actual = isZero(testArrayValue)
+	th.CheckEquals(t, expected, actual)
+	testArray = [2]string{"one", "two"}
+	testArrayValue = reflect.ValueOf(testArray)
+	expected = false
+	actual = isZero(testArrayValue)
+	th.CheckEquals(t, expected, actual)
+
+	var testStruct struct {
+		A string
+		B time.Time
+	}
+	testStructValue := reflect.ValueOf(testStruct)
+	expected = true
+	actual = isZero(testStructValue)
+	th.CheckEquals(t, expected, actual)
+	testStruct = struct {
+		A string
+		B time.Time
+	}{
+		B: time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC),
+	}
+	testStructValue = reflect.ValueOf(testStruct)
+	expected = false
+	actual = isZero(testStructValue)
+	th.CheckEquals(t, expected, actual)
+
+}