Rename test helper files to helpers_test.go

This ensures that these files are properly included only in testing.

[Fixes #10]

prometheus/helpers_test.go

@@ -38,3 +38,18 @@ func isNaN(obtained interface{}) (result bool) {
 
 	return false
 }
+
+type valueEqualsChecker struct {
+	*CheckerInfo
+}
+
+var ValueEquals Checker = &valueEqualsChecker{
+	&CheckerInfo{Name: "IsValue", Params: []string{"obtained", "expected"}},
+}
+
+func (checker *valueEqualsChecker) Check(params []interface{}, names []string) (result bool, error string) {
+	actual := params[0].(*item).Value
+	expected := params[1]
+
+	return actual == expected, ""
+}

prometheus/test_helper.go

@@ -1,26 +0,0 @@
-// Copyright (c) 2013, Prometheus Team
-// All rights reserved.
-//
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package prometheus
-
-import (
-	. "github.com/matttproud/gocheck"
-)
-
-type valueEqualsChecker struct {
-	*CheckerInfo
-}
-
-var ValueEquals Checker = &valueEqualsChecker{
-	&CheckerInfo{Name: "IsValue", Params: []string{"obtained", "expected"}},
-}
-
-func (checker *valueEqualsChecker) Check(params []interface{}, names []string) (result bool, error string) {
-	actual := params[0].(*item).Value
-	expected := params[1]
-
-	return actual == expected, ""
-}