[FAB-3413] Increase coverage for core/ledger/util

This CR increases coverage for util.go and txvalidationflag.go
to 100%. Will remove filterbitarray.go and filterbitarray_test.go
in a separate CR as these files are not being used.

Change-Id: I2a6c9d97af0a4674a3b6a019da3a93f0a01468fb
Signed-off-by: senthil <cendhu@gmail.com>

core/ledger/util/txvalidationflags_test.go

@@ -0,0 +1,36 @@
+/*
+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 util
+
+import (
+	"testing"
+
+	"github.com/hyperledger/fabric/protos/peer"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTransactionValidationFlags(t *testing.T) {
+	txFlags := NewTxValidationFlags(10)
+	assert.Equal(t, 10, len(txFlags))
+
+	txFlags.SetFlag(0, peer.TxValidationCode_VALID)
+	assert.Equal(t, peer.TxValidationCode_VALID, txFlags.Flag(0))
+	assert.Equal(t, true, txFlags.IsValid(0))
+
+	txFlags.SetFlag(1, peer.TxValidationCode_MVCC_READ_CONFLICT)
+	assert.Equal(t, true, txFlags.IsInvalid(1))
+}

core/ledger/util/util_test.go

@@ -0,0 +1,34 @@
+/*
+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 util
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetSortedKeys(t *testing.T) {
+	mapKeyValue := make(map[string]int)
+	mapKeyValue["blue"] = 10
+	mapKeyValue["apple"] = 15
+	mapKeyValue["red"] = 12
+	mapKeyValue["123"] = 22
+	mapKeyValue["a"] = 33
+	mapKeyValue[""] = 30
+	assert.Equal(t, []string{"", "123", "a", "apple", "blue", "red"}, GetSortedKeys(mapKeyValue))
+}