| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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 arrio_test |
| |
| import ( |
| "fmt" |
| "io" |
| "io/ioutil" |
| "os" |
| "testing" |
| |
| "github.com/apache/arrow/go/arrow" |
| "github.com/apache/arrow/go/arrow/array" |
| "github.com/apache/arrow/go/arrow/arrio" |
| "github.com/apache/arrow/go/arrow/internal/arrdata" |
| "github.com/apache/arrow/go/arrow/ipc" |
| "github.com/apache/arrow/go/arrow/memory" |
| ) |
| |
| type copyKind int |
| |
| const ( |
| fileKind copyKind = iota |
| streamKind |
| ) |
| |
| func (k copyKind) write(t *testing.T, f *os.File, mem memory.Allocator, schema *arrow.Schema, recs []array.Record) { |
| t.Helper() |
| |
| switch k { |
| case fileKind: |
| arrdata.WriteFile(t, f, mem, schema, recs) |
| case streamKind: |
| arrdata.WriteStream(t, f, mem, schema, recs) |
| default: |
| panic("invalid copyKind") |
| } |
| } |
| |
| func (k copyKind) check(t *testing.T, f *os.File, mem memory.Allocator, schema *arrow.Schema, recs []array.Record) { |
| t.Helper() |
| |
| switch k { |
| case fileKind: |
| arrdata.CheckArrowFile(t, f, mem, schema, recs) |
| case streamKind: |
| arrdata.CheckArrowStream(t, f, mem, schema, recs) |
| default: |
| panic("invalid copyKind") |
| } |
| } |
| |
| func TestCopy(t *testing.T) { |
| type kind int |
| |
| for _, tc := range []struct { |
| name string |
| src, dst copyKind |
| }{ |
| {name: "file2file", src: fileKind, dst: fileKind}, |
| {name: "file2stream", src: fileKind, dst: streamKind}, |
| {name: "stream2file", src: streamKind, dst: fileKind}, |
| {name: "stream2stream", src: streamKind, dst: streamKind}, |
| } { |
| t.Run(tc.name, func(t *testing.T) { |
| for name, recs := range arrdata.Records { |
| t.Run(name, func(t *testing.T) { |
| for _, tcopy := range []struct { |
| n int |
| want int |
| err error |
| }{ |
| {-1, len(recs), nil}, |
| {1, 1, nil}, |
| {0, 0, nil}, |
| {len(recs), len(recs), nil}, |
| {len(recs) + 1, len(recs), io.EOF}, |
| } { |
| t.Run(fmt.Sprintf("-copy-n=%d", tcopy.n), func(t *testing.T) { |
| mem := memory.NewCheckedAllocator(memory.NewGoAllocator()) |
| defer mem.AssertSize(t, 0) |
| |
| f, err := ioutil.TempFile("", "arrow-ipc-") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer f.Close() |
| defer os.Remove(f.Name()) |
| |
| o, err := ioutil.TempFile("", "arrow-ipc-") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer o.Close() |
| defer os.Remove(o.Name()) |
| |
| tc.src.write(t, f, mem, recs[0].Schema(), recs) |
| tc.src.check(t, f, mem, recs[0].Schema(), recs) |
| |
| _, err = f.Seek(0, io.SeekStart) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| var r arrio.Reader |
| switch tc.src { |
| case fileKind: |
| rr, err := ipc.NewFileReader(f, ipc.WithSchema(recs[0].Schema()), ipc.WithAllocator(mem)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer rr.Close() |
| r = rr |
| case streamKind: |
| rr, err := ipc.NewReader(f, ipc.WithSchema(recs[0].Schema()), ipc.WithAllocator(mem)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer rr.Release() |
| r = rr |
| default: |
| t.Fatalf("invalid src type %v", tc.src) |
| } |
| |
| var w interface { |
| arrio.Writer |
| io.Closer |
| } |
| |
| switch tc.dst { |
| case fileKind: |
| w, err = ipc.NewFileWriter(o, ipc.WithSchema(recs[0].Schema()), ipc.WithAllocator(mem)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| case streamKind: |
| w = ipc.NewWriter(o, ipc.WithSchema(recs[0].Schema()), ipc.WithAllocator(mem)) |
| default: |
| t.Fatalf("invalid dst type %v", tc.dst) |
| } |
| defer w.Close() |
| |
| var ( |
| n int64 |
| ) |
| switch tcopy.n { |
| case -1: |
| n, err = arrio.Copy(w, r) |
| case len(recs) + 1: |
| n, err = arrio.CopyN(w, r, int64(tcopy.n)) |
| default: |
| n, err = arrio.CopyN(w, r, int64(tcopy.n)) |
| } |
| |
| switch err { |
| case nil: |
| if tcopy.err != nil { |
| t.Fatalf("got a nil error, want=%v", tcopy.err) |
| } |
| default: |
| switch tcopy.err { |
| case nil: |
| t.Fatalf("invalid error: got=%v, want=%v", err, tcopy.err) |
| default: |
| if tcopy.err.Error() != err.Error() { |
| t.Fatalf("invalid error: got=%v, want=%v", err, tcopy.err) |
| } |
| } |
| } |
| |
| if got, want := n, int64(tcopy.want); got != want { |
| t.Fatalf("invalid number of records copied: got=%d, want=%d", got, want) |
| } |
| |
| err = w.Close() |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| tc.dst.check(t, o, mem, recs[0].Schema(), recs[:tcopy.want]) |
| }) |
| } |
| }) |
| } |
| }) |
| } |
| } |