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testing.go
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testing.go
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// Package testing has the source tests.
// All source drivers must pass the Test function.
// This lives in it's own package so it stays a test dependency.
package testing
import (
"os"
"testing"
"github.com/golang-migrate/migrate/source"
)
// Test runs tests against source implementations.
// It assumes that the driver tests has access to the following migrations:
//
// u = up migration, d = down migration, n = version
// | 1 | - | 3 | 4 | 5 | - | 7 |
// | u d | - | u | u d | d | - | u d |
//
// See source/stub/stub_test.go or source/file/file_test.go for an example.
func Test(t *testing.T, d source.Driver) {
TestFirst(t, d)
TestPrev(t, d)
TestNext(t, d)
TestReadUp(t, d)
TestReadDown(t, d)
}
func TestFirst(t *testing.T, d source.Driver) {
version, err := d.First()
if err != nil {
t.Fatalf("First: expected err to be nil, got %v", err)
}
if version != 1 {
t.Errorf("First: expected 1, got %v", version)
}
}
func TestPrev(t *testing.T, d source.Driver) {
tt := []struct {
version uint
expectErr error
expectPrevVersion uint
}{
{version: 0, expectErr: os.ErrNotExist},
{version: 1, expectErr: os.ErrNotExist},
{version: 2, expectErr: os.ErrNotExist},
{version: 3, expectErr: nil, expectPrevVersion: 1},
{version: 4, expectErr: nil, expectPrevVersion: 3},
{version: 5, expectErr: nil, expectPrevVersion: 4},
{version: 6, expectErr: os.ErrNotExist},
{version: 7, expectErr: nil, expectPrevVersion: 5},
{version: 8, expectErr: os.ErrNotExist},
{version: 9, expectErr: os.ErrNotExist},
}
for i, v := range tt {
pv, err := d.Prev(v.version)
if (v.expectErr == os.ErrNotExist && !os.IsNotExist(err)) && v.expectErr != err {
t.Errorf("Prev: expected %v, got %v, in %v", v.expectErr, err, i)
}
if err == nil && v.expectPrevVersion != pv {
t.Errorf("Prev: expected %v, got %v, in %v", v.expectPrevVersion, pv, i)
}
}
}
func TestNext(t *testing.T, d source.Driver) {
tt := []struct {
version uint
expectErr error
expectNextVersion uint
}{
{version: 0, expectErr: os.ErrNotExist},
{version: 1, expectErr: nil, expectNextVersion: 3},
{version: 2, expectErr: os.ErrNotExist},
{version: 3, expectErr: nil, expectNextVersion: 4},
{version: 4, expectErr: nil, expectNextVersion: 5},
{version: 5, expectErr: nil, expectNextVersion: 7},
{version: 6, expectErr: os.ErrNotExist},
{version: 7, expectErr: os.ErrNotExist},
{version: 8, expectErr: os.ErrNotExist},
{version: 9, expectErr: os.ErrNotExist},
}
for i, v := range tt {
nv, err := d.Next(v.version)
if (v.expectErr == os.ErrNotExist && !os.IsNotExist(err)) && v.expectErr != err {
t.Errorf("Next: expected %v, got %v, in %v", v.expectErr, err, i)
}
if err == nil && v.expectNextVersion != nv {
t.Errorf("Next: expected %v, got %v, in %v", v.expectNextVersion, nv, i)
}
}
}
func TestReadUp(t *testing.T, d source.Driver) {
tt := []struct {
version uint
expectErr error
expectUp bool
}{
{version: 0, expectErr: os.ErrNotExist},
{version: 1, expectErr: nil, expectUp: true},
{version: 2, expectErr: os.ErrNotExist},
{version: 3, expectErr: nil, expectUp: true},
{version: 4, expectErr: nil, expectUp: true},
{version: 5, expectErr: os.ErrNotExist},
{version: 6, expectErr: os.ErrNotExist},
{version: 7, expectErr: nil, expectUp: true},
{version: 8, expectErr: os.ErrNotExist},
}
for i, v := range tt {
up, identifier, err := d.ReadUp(v.version)
if (v.expectErr == os.ErrNotExist && !os.IsNotExist(err)) ||
(v.expectErr != os.ErrNotExist && err != v.expectErr) {
t.Errorf("expected %v, got %v, in %v", v.expectErr, err, i)
} else if err == nil {
if len(identifier) == 0 {
t.Errorf("expected identifier not to be empty, in %v", i)
}
if v.expectUp == true && up == nil {
t.Errorf("expected up not to be nil, in %v", i)
} else if v.expectUp == false && up != nil {
t.Errorf("expected up to be nil, got %v, in %v", up, i)
}
}
}
}
func TestReadDown(t *testing.T, d source.Driver) {
tt := []struct {
version uint
expectErr error
expectDown bool
}{
{version: 0, expectErr: os.ErrNotExist},
{version: 1, expectErr: nil, expectDown: true},
{version: 2, expectErr: os.ErrNotExist},
{version: 3, expectErr: os.ErrNotExist},
{version: 4, expectErr: nil, expectDown: true},
{version: 5, expectErr: nil, expectDown: true},
{version: 6, expectErr: os.ErrNotExist},
{version: 7, expectErr: nil, expectDown: true},
{version: 8, expectErr: os.ErrNotExist},
}
for i, v := range tt {
down, identifier, err := d.ReadDown(v.version)
if (v.expectErr == os.ErrNotExist && !os.IsNotExist(err)) ||
(v.expectErr != os.ErrNotExist && err != v.expectErr) {
t.Errorf("expected %v, got %v, in %v", v.expectErr, err, i)
} else if err == nil {
if len(identifier) == 0 {
t.Errorf("expected identifier not to be empty, in %v", i)
}
if v.expectDown == true && down == nil {
t.Errorf("expected down not to be nil, in %v", i)
} else if v.expectDown == false && down != nil {
t.Errorf("expected down to be nil, got %v, in %v", down, i)
}
}
}
}