vitess-gh/go/mysql/gtid_test.go

/*
Copyright 2017 Google 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 agreedto 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 mysql

import (
	"strings"
	"testing"
)

func TestParseGTID(t *testing.T) {
	flavor := "fake flavor"
	gtidParsers[flavor] = func(s string) (GTID, error) {
		return fakeGTID{value: s}, nil
	}
	input := "12345"
	want := fakeGTID{value: "12345"}

	got, err := ParseGTID(flavor, input)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if got != want {
		t.Errorf("ParseGTID(%#v, %#v) = %#v, want %#v", flavor, input, got, want)
	}
}

func TestMustParseGTID(t *testing.T) {
	flavor := "fake flavor"
	gtidParsers[flavor] = func(s string) (GTID, error) {
		return fakeGTID{value: s}, nil
	}
	input := "12345"
	want := fakeGTID{value: "12345"}

	got := MustParseGTID(flavor, input)
	if got != want {
		t.Errorf("MustParseGTID(%#v, %#v) = %#v, want %#v", flavor, input, got, want)
	}
}

func TestMustParseGTIDError(t *testing.T) {
	defer func() {
		want := `parse error: unknown GTID flavor "unknown flavor !@$!@"`
		err := recover()
		if err == nil {
			t.Errorf("wrong error, got %#v, want %#v", err, want)
		}
		got, ok := err.(error)
		if !ok || !strings.HasPrefix(got.Error(), want) {
			t.Errorf("wrong error, got %#v, want %#v", got, want)
		}
	}()

	MustParseGTID("unknown flavor !@$!@", "yowzah")
}

func TestParseUnknownFlavor(t *testing.T) {
	want := `parse error: unknown GTID flavor "foobar8675309"`

	_, err := ParseGTID("foobar8675309", "foo")
	if !strings.HasPrefix(err.Error(), want) {
		t.Errorf("wrong error, got '%v', want '%v'", err, want)
	}
}

func TestEncodeGTID(t *testing.T) {
	input := fakeGTID{
		flavor: "myflav",
		value:  "1:2:3-4-5-6",
	}
	want := "myflav/1:2:3-4-5-6"

	if got := EncodeGTID(input); got != want {
		t.Errorf("EncodeGTID(%#v) = %#v, want %#v", input, got, want)
	}
}

func TestDecodeGTID(t *testing.T) {
	gtidParsers["flavorflav"] = func(s string) (GTID, error) {
		return fakeGTID{value: s}, nil
	}
	input := "flavorflav/123-456:789"
	want := fakeGTID{value: "123-456:789"}

	got, err := DecodeGTID(input)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if got != want {
		t.Errorf("DecodeGTID(%#v) = %#v, want %#v", input, got, want)
	}
}

func TestMustDecodeGTID(t *testing.T) {
	gtidParsers["flavorflav"] = func(s string) (GTID, error) {
		return fakeGTID{value: s}, nil
	}
	input := "flavorflav/123-456:789"
	want := fakeGTID{value: "123-456:789"}

	got := MustDecodeGTID(input)
	if got != want {
		t.Errorf("DecodeGTID(%#v) = %#v, want %#v", input, got, want)
	}
}

func TestMustDecodeGTIDError(t *testing.T) {
	defer func() {
		want := `parse error: unknown GTID flavor "unknown flavor !@$!@"`
		err := recover()
		if err == nil {
			t.Errorf("wrong error, got %#v, want %#v", err, want)
		}
		got, ok := err.(error)
		if !ok || !strings.HasPrefix(got.Error(), want) {
			t.Errorf("wrong error, got %#v, want %#v", got, want)
		}
	}()

	MustDecodeGTID("unknown flavor !@$!@/yowzah")
}

func TestEncodeNilGTID(t *testing.T) {
	input := GTID(nil)
	want := ""

	if got := EncodeGTID(input); got != want {
		t.Errorf("EncodeGTID(%#v) = %#v, want %#v", input, got, want)
	}
}

func TestDecodeNilGTID(t *testing.T) {
	input := ""
	want := GTID(nil)

	got, err := DecodeGTID(input)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if got != want {
		t.Errorf("DecodeGTID(%#v) = %#v, want %#v", input, got, want)
	}
}

func TestDecodeNoFlavor(t *testing.T) {
	gtidParsers[""] = func(s string) (GTID, error) {
		return fakeGTID{value: s}, nil
	}
	input := "12345"
	want := fakeGTID{value: "12345"}

	got, err := DecodeGTID(input)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if got != want {
		t.Errorf("DecodeGTID(%#v) = %#v, want %#v", input, got, want)
	}
}

func TestDecodeGTIDWithSeparator(t *testing.T) {
	gtidParsers["moobar"] = func(s string) (GTID, error) {
		return fakeGTID{value: s}, nil
	}
	input := "moobar/GTID containing / a slash"
	want := fakeGTID{value: "GTID containing / a slash"}

	got, err := DecodeGTID(input)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	if got != want {
		t.Errorf("DecodeGTID(%#v) = %#v, want %#v", input, got, want)
	}
}

type fakeGTID struct {
	flavor, value string
}

func (f fakeGTID) String() string            { return f.value }
func (f fakeGTID) Flavor() string            { return f.flavor }
func (fakeGTID) SourceServer() interface{}   { return int(1) }
func (fakeGTID) SequenceNumber() interface{} { return int(1) }
func (fakeGTID) SequenceDomain() interface{} { return int(1) }
func (f fakeGTID) GTIDSet() GTIDSet          { return nil }

func (fakeGTID) ContainsGTID(GTID) bool { return false }
func (fakeGTID) Contains(GTIDSet) bool  { return false }
func (f fakeGTID) Equal(other GTIDSet) bool {
	otherFake, ok := other.(fakeGTID)
	if !ok {
		return false
	}
	return f == otherFake
}
func (fakeGTID) AddGTID(GTID) GTIDSet { return nil }