93 lines
2.0 KiB
Go
93 lines
2.0 KiB
Go
// Copyright (C) MongoDB, Inc. 2022-present.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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package driver
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import (
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"testing"
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"go.mongodb.org/mongo-driver/internal/testutil/assert"
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)
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func TestBatchCursor(t *testing.T) {
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t.Parallel()
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t.Run("setBatchSize", func(t *testing.T) {
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t.Parallel()
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var size int32
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bc := &BatchCursor{
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batchSize: size,
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}
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assert.Equal(t, size, bc.batchSize, "expected batchSize %v, got %v", size, bc.batchSize)
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size = int32(4)
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bc.SetBatchSize(size)
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assert.Equal(t, size, bc.batchSize, "expected batchSize %v, got %v", size, bc.batchSize)
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})
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t.Run("calcGetMoreBatchSize", func(t *testing.T) {
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t.Parallel()
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for _, tcase := range []struct {
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name string
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size, limit, numReturned, expected int32
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ok bool
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}{
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{
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name: "empty",
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expected: 0,
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ok: true,
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},
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{
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name: "batchSize NEQ 0",
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size: 4,
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expected: 4,
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ok: true,
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},
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{
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name: "limit NEQ 0",
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limit: 4,
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expected: 0,
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ok: true,
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},
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{
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name: "limit NEQ and batchSize + numReturned EQ limit",
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size: 4,
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limit: 8,
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numReturned: 4,
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expected: 4,
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ok: true,
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},
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{
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name: "limit makes batchSize negative",
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numReturned: 4,
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limit: 2,
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expected: -2,
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ok: false,
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},
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} {
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tcase := tcase
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t.Run(tcase.name, func(t *testing.T) {
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t.Parallel()
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bc := &BatchCursor{
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limit: tcase.limit,
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batchSize: tcase.size,
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numReturned: tcase.numReturned,
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}
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bc.SetBatchSize(tcase.size)
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size, ok := calcGetMoreBatchSize(*bc)
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assert.Equal(t, tcase.expected, size, "expected batchSize %v, got %v", tcase.expected, size)
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assert.Equal(t, tcase.ok, ok, "expected ok %v, got %v", tcase.ok, ok)
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})
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}
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})
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}
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