Add unit tests for functions in gocql/batch.go (#5759)

* Add unit tests for batch.go

common/persistence/nosql/nosqlplugin/cassandra/gocql/batch_test.go

@@ -0,0 +1,76 @@
+// The MIT License (MIT)
+
+// Copyright (c) 2017-2020 Uber Technologies Inc.
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+package gocql
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/gocql/gocql"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBatch(t *testing.T) {
+	testBatch := gocql.Batch{}
+	b := newBatch(&testBatch)
+	assert.NotNil(t, b)
+}
+
+func Test_Batch_WithContext(t *testing.T) {
+	testCtx := context.Background()
+	testBatch := gocql.Batch{}
+	b := newBatch(&testBatch)
+	assert.NotNil(t, b.WithContext(testCtx))
+}
+
+func Test_Batch_WithTimestamp(t *testing.T) {
+	timeNow := time.Now().Unix()
+	testBatch := gocql.Batch{}
+	b := newBatch(&testBatch)
+	withTimeStamp := b.WithTimestamp(timeNow)
+	assert.NotNil(t, withTimeStamp)
+}
+
+func Test_Batch_Consistency(t *testing.T) {
+	testBatch := gocql.Batch{}
+	b := newBatch(&testBatch)
+	consistency := b.Consistency(One)
+	assert.NotNil(t, consistency)
+}
+
+func Test_MustConvertBatchType(t *testing.T) {
+	batch := []BatchType{LoggedBatch, UnloggedBatch, CounterBatch}
+	for _, b := range batch {
+		mustConvertBatchType(b)
+	}
+}
+
+func Test_MustConvertBatchType_Panic(t *testing.T) {
+	defer func() {
+		if r := recover(); r == nil {
+			t.Errorf("The code did not panic")
+		}
+	}()
+	mustConvertBatchType(4)
+}