chore: import upstream snapshot with attribution
This commit is contained in:
wehub-resource-sync
@@ -0,0 +1,200 @@
|
||||
// Copyright 2024 Dolthub, Inc.
|
||||
//
|
||||
// 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 _dataloader
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"context"
|
||||
"testing"
|
||||
|
||||
"github.com/dolthub/go-mysql-server/memory"
|
||||
"github.com/dolthub/go-mysql-server/sql"
|
||||
"github.com/stretchr/testify/assert"
|
||||
"github.com/stretchr/testify/require"
|
||||
|
||||
"github.com/dolthub/doltgresql/core/dataloader"
|
||||
"github.com/dolthub/doltgresql/server/initialization"
|
||||
"github.com/dolthub/doltgresql/server/types"
|
||||
doltgresservercfg "github.com/dolthub/doltgresql/servercfg"
|
||||
)
|
||||
|
||||
func TestTabDataLoader(t *testing.T) {
|
||||
db := memory.NewDatabase("mydb")
|
||||
provider := memory.NewDBProvider(db)
|
||||
initialization.Initialize(nil, doltgresservercfg.DefaultServerConfig())
|
||||
|
||||
ctx := &sql.Context{
|
||||
Context: context.Background(),
|
||||
Session: memory.NewSession(sql.NewBaseSession(), provider),
|
||||
}
|
||||
|
||||
pkCols := []string{"pk", "c1", "c2"}
|
||||
pkSchema := sql.NewPrimaryKeySchema(sql.Schema{
|
||||
{Name: "pk", Type: types.Int64, Source: "source1"},
|
||||
{Name: "c1", Type: types.Int64, Source: "source1"},
|
||||
{Name: "c2", Type: types.VarChar, Source: "source1"},
|
||||
}, 0)
|
||||
|
||||
// Tests that a basic tab delimited doc can be loaded as a single chunk.
|
||||
t.Run("basic case", func(t *testing.T) {
|
||||
dataLoader, err := dataloader.NewTabularDataLoader(pkCols, pkSchema.Schema, "\t", "\\N", false)
|
||||
require.NoError(t, err)
|
||||
|
||||
var rows []sql.Row
|
||||
|
||||
// Load all the data as a single chunk
|
||||
reader := bytes.NewReader([]byte("1\t100\tbar\n2\t200\tbash\n"))
|
||||
err = dataLoader.SetNextDataChunk(ctx, bufio.NewReader(reader))
|
||||
require.NoError(t, err)
|
||||
rows = append(rows, loadAllRows(ctx, t, dataLoader)...)
|
||||
|
||||
results, err := dataLoader.Finish(ctx)
|
||||
require.NoError(t, err)
|
||||
require.EqualValues(t, 2, results.RowsLoaded)
|
||||
|
||||
assert.Equal(t, []sql.Row{
|
||||
{int64(1), int64(100), "bar"},
|
||||
{int64(2), int64(200), "bash"},
|
||||
}, rows)
|
||||
})
|
||||
|
||||
// Tests when a record is split across two chunks of data, and the
|
||||
// partial record must be buffered and prepended to the next chunk.
|
||||
t.Run("record split across two chunks", func(t *testing.T) {
|
||||
dataLoader, err := dataloader.NewTabularDataLoader(pkCols, pkSchema.Schema, "\t", "\\N", false)
|
||||
require.NoError(t, err)
|
||||
|
||||
var rows []sql.Row
|
||||
|
||||
// Load the first chunk
|
||||
reader := bytes.NewReader([]byte("1 100 ba"))
|
||||
err = dataLoader.SetNextDataChunk(ctx, bufio.NewReader(reader))
|
||||
require.NoError(t, err)
|
||||
rows = append(rows, loadAllRows(ctx, t, dataLoader)...)
|
||||
|
||||
// Load the second chunk
|
||||
reader = bytes.NewReader([]byte("r\n2 200 bash\n"))
|
||||
err = dataLoader.SetNextDataChunk(ctx, bufio.NewReader(reader))
|
||||
require.NoError(t, err)
|
||||
rows = append(rows, loadAllRows(ctx, t, dataLoader)...)
|
||||
|
||||
// Finish
|
||||
results, err := dataLoader.Finish(ctx)
|
||||
require.NoError(t, err)
|
||||
require.EqualValues(t, 2, results.RowsLoaded)
|
||||
|
||||
assert.Equal(t, []sql.Row{
|
||||
{int64(1), int64(100), "bar"},
|
||||
{int64(2), int64(200), "bash"},
|
||||
}, rows)
|
||||
})
|
||||
|
||||
// Tests when a record is split across two chunks of data, and a
|
||||
// header row is present.
|
||||
t.Run("record split across two chunks, with header", func(t *testing.T) {
|
||||
dataLoader, err := dataloader.NewTabularDataLoader(pkCols, pkSchema.Schema, "\t", "\\N", true)
|
||||
require.NoError(t, err)
|
||||
|
||||
var rows []sql.Row
|
||||
|
||||
// Load the first chunk
|
||||
reader := bytes.NewReader([]byte("pk c1 c2\n1 100 ba"))
|
||||
err = dataLoader.SetNextDataChunk(ctx, bufio.NewReader(reader))
|
||||
require.NoError(t, err)
|
||||
rows = append(rows, loadAllRows(ctx, t, dataLoader)...)
|
||||
|
||||
// Load the second chunk
|
||||
reader = bytes.NewReader([]byte("r\n2 200 bash\n"))
|
||||
err = dataLoader.SetNextDataChunk(ctx, bufio.NewReader(reader))
|
||||
require.NoError(t, err)
|
||||
rows = append(rows, loadAllRows(ctx, t, dataLoader)...)
|
||||
|
||||
// Finish
|
||||
results, err := dataLoader.Finish(ctx)
|
||||
require.NoError(t, err)
|
||||
require.EqualValues(t, 2, results.RowsLoaded)
|
||||
|
||||
// Assert that the table contains the expected data
|
||||
assert.Equal(t, []sql.Row{
|
||||
{int64(1), int64(100), "bar"},
|
||||
{int64(2), int64(200), "bash"},
|
||||
}, rows)
|
||||
})
|
||||
|
||||
// Tests a record that contains a quoted newline character and is split
|
||||
// across two chunks.
|
||||
t.Run("quoted newlines across two chunks", func(t *testing.T) {
|
||||
dataLoader, err := dataloader.NewTabularDataLoader(pkCols, pkSchema.Schema, "\t", "\\N", false)
|
||||
require.NoError(t, err)
|
||||
|
||||
var rows []sql.Row
|
||||
|
||||
// Load the first chunk
|
||||
reader := bytes.NewReader([]byte("1 100 \"baz\\nbar\\n"))
|
||||
err = dataLoader.SetNextDataChunk(ctx, bufio.NewReader(reader))
|
||||
require.NoError(t, err)
|
||||
rows = append(rows, loadAllRows(ctx, t, dataLoader)...)
|
||||
|
||||
// Load the second chunk
|
||||
reader = bytes.NewReader([]byte("bash\"\n2 200 bash\n"))
|
||||
err = dataLoader.SetNextDataChunk(ctx, bufio.NewReader(reader))
|
||||
require.NoError(t, err)
|
||||
rows = append(rows, loadAllRows(ctx, t, dataLoader)...)
|
||||
|
||||
// Finish
|
||||
results, err := dataLoader.Finish(ctx)
|
||||
require.NoError(t, err)
|
||||
require.EqualValues(t, 2, results.RowsLoaded)
|
||||
|
||||
// Assert that the table contains the expected data
|
||||
assert.Equal(t, []sql.Row{
|
||||
{int64(1), int64(100), "\"baz\\nbar\\nbash\""},
|
||||
{int64(2), int64(200), "bash"},
|
||||
}, rows)
|
||||
})
|
||||
|
||||
// Tests when a record is split across two chunks of data, and a
|
||||
// header row is present.
|
||||
t.Run("delimiter='|', record split across two chunks, with header", func(t *testing.T) {
|
||||
dataLoader, err := dataloader.NewTabularDataLoader(pkCols, pkSchema.Schema, "|", "\\N", true)
|
||||
require.NoError(t, err)
|
||||
|
||||
var rows []sql.Row
|
||||
|
||||
// Load the first chunk
|
||||
reader := bytes.NewReader([]byte("pk|c1|c2\n1|100|ba"))
|
||||
err = dataLoader.SetNextDataChunk(ctx, bufio.NewReader(reader))
|
||||
require.NoError(t, err)
|
||||
rows = append(rows, loadAllRows(ctx, t, dataLoader)...)
|
||||
|
||||
// Load the second chunk
|
||||
reader = bytes.NewReader([]byte("r\n2|200|bash\n"))
|
||||
err = dataLoader.SetNextDataChunk(ctx, bufio.NewReader(reader))
|
||||
require.NoError(t, err)
|
||||
rows = append(rows, loadAllRows(ctx, t, dataLoader)...)
|
||||
|
||||
// Finish
|
||||
results, err := dataLoader.Finish(ctx)
|
||||
require.NoError(t, err)
|
||||
require.EqualValues(t, 2, results.RowsLoaded)
|
||||
|
||||
// Assert that the table contains the expected data
|
||||
assert.Equal(t, []sql.Row{
|
||||
{int64(1), int64(100), "bar"},
|
||||
{int64(2), int64(200), "bash"},
|
||||
}, rows)
|
||||
})
|
||||
}
|
||||
Reference in New Issue
Block a user