[FAB-4060] Write unit tests for core/policyprovider

Wrote tests for the package core/policyprovider.
CC is 100% since there was hardly anything to do here.

Change-Id: I74ac788b26d12de1087c875b66f752bc18c2abdc
Signed-off-by: Yacov Manevich <[email protected]>

Author: yacovm

core/policyprovider/provider_test.go

@@ -0,0 +1,41 @@
+/*
+Copyright IBM Corp. 2017 All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+		 http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package policyprovider
+
+import (
+	"testing"
+
+	"github.com/hyperledger/fabric/core/policy"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetPolicyChecker(t *testing.T) {
+	// Ensure GetPolicyChecker implements policy.PolicyChecker
+	var pc policy.PolicyChecker
+	pc = GetPolicyChecker()
+	assert.NotNil(t, pc)
+}
+
+func TestDefaultFactory_NewPolicyChecker(t *testing.T) {
+	// Ensure defaultFactory implements policy.PolicyCheckerFactory
+	var pcf policy.PolicyCheckerFactory
+	pcf = &defaultFactory{}
+	var pc policy.PolicyChecker
+	// Check we can obtain a new policyChecker
+	pc = pcf.NewPolicyChecker()
+	assert.NotNil(t, pc)
+}