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399 lines (380 loc) · 8.63 KB
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// 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 kivik
import (
"context"
"errors"
"fmt"
"io"
"net/http"
"strconv"
"testing"
"github.com/google/go-cmp/cmp"
"gitlab.com/flimzy/testy"
"github.com/go-kivik/kivik/v4/driver"
internal "github.com/go-kivik/kivik/v4/int/errors"
"github.com/go-kivik/kivik/v4/int/mock"
)
func TestChangesNext(t *testing.T) {
tests := []struct {
name string
changes *Changes
expected bool
}{
{
name: "nothing more",
changes: &Changes{
iter: &iter{state: stateClosed},
},
expected: false,
},
{
name: "more",
changes: &Changes{
iter: &iter{
feed: &mockIterator{
NextFunc: func(_ interface{}) error { return nil },
},
},
},
expected: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
result := test.changes.Next()
if result != test.expected {
t.Errorf("Unexpected result: %v", result)
}
})
}
}
func TestChangesErr(t *testing.T) {
const expected = "foo error"
c := &Changes{
iter: &iter{err: errors.New(expected)},
}
err := c.Err()
if !testy.ErrorMatches(expected, err) {
t.Errorf("Unexpected error: %s", err)
}
}
func TestChangesClose(t *testing.T) {
const expected = "close error"
c := &Changes{
iter: &iter{
feed: &mockIterator{CloseFunc: func() error { return errors.New(expected) }},
},
}
err := c.Close()
if !testy.ErrorMatches(expected, err) {
t.Errorf("Unexpected error: %s", err)
}
}
func TestChangesIteratorNext(t *testing.T) {
const expected = "foo error"
c := &changesIterator{
Changes: &mock.Changes{
NextFunc: func(_ *driver.Change) error { return errors.New(expected) },
},
}
var i driver.Change
err := c.Next(&i)
if !testy.ErrorMatches(expected, err) {
t.Errorf("Unexpected error: %s", err)
}
}
func TestChangesIteratorNew(t *testing.T) {
ch := newChanges(context.Background(), nil, &mock.Changes{})
expected := &Changes{
iter: &iter{
feed: &changesIterator{
Changes: &mock.Changes{},
},
curVal: &driver.Change{},
},
changesi: &mock.Changes{},
}
ch.cancel = nil // determinism
if d := testy.DiffInterface(expected, ch); d != nil {
t.Error(d)
}
}
func TestChangesGetters(t *testing.T) {
changes := []*driver.Change{
{
ID: "foo",
Deleted: true,
Changes: []string{"1", "2", "3"},
Seq: "2-foo",
},
}
c := newChanges(context.Background(), nil, &mock.Changes{
NextFunc: func(c *driver.Change) error {
if len(changes) == 0 {
return io.EOF
}
change := changes[0]
changes = changes[1:]
*c = *change
return nil
},
PendingFunc: func() int64 { return 123 },
LastSeqFunc: func() string { return "3-bar" },
ETagFunc: func() string { return "etag-foo" },
})
_ = c.Next()
t.Run("Changes", func(t *testing.T) {
expected := []string{"1", "2", "3"}
result := c.Changes()
if d := testy.DiffInterface(expected, result); d != nil {
t.Error(d)
}
})
t.Run("Deleted", func(t *testing.T) {
expected := true
result := c.Deleted()
if expected != result {
t.Errorf("Unexpected result: %v", result)
}
})
t.Run("ID", func(t *testing.T) {
expected := "foo"
result := c.ID()
if expected != result {
t.Errorf("Unexpected result: %v", result)
}
})
t.Run("Seq", func(t *testing.T) {
expected := "2-foo"
result := c.Seq()
if expected != result {
t.Errorf("Unexpected result: %v", result)
}
})
t.Run("ETag", func(t *testing.T) {
expected := "etag-foo"
result := c.ETag()
if expected != result {
t.Errorf("Unexpected result: %v", result)
}
})
t.Run("Metadata", func(t *testing.T) {
_ = c.Next()
t.Run("LastSeq", func(t *testing.T) {
expected := "3-bar"
meta, err := c.Metadata()
if err != nil {
t.Fatal(err)
}
if expected != meta.LastSeq {
t.Errorf("Unexpected LastSeq: %v", meta.LastSeq)
}
})
t.Run("Pending", func(t *testing.T) {
expected := int64(123)
meta, err := c.Metadata()
if err != nil {
t.Fatal(err)
}
if expected != meta.Pending {
t.Errorf("Unexpected Pending: %v", meta.Pending)
}
})
})
}
func TestChangesScanDoc(t *testing.T) {
tests := []struct {
name string
changes *Changes
expected interface{}
status int
err string
}{
{
name: "success",
changes: &Changes{
iter: &iter{
state: stateRowReady,
curVal: &driver.Change{
Doc: []byte(`{"foo":123.4}`),
},
},
},
expected: map[string]interface{}{"foo": 123.4},
},
{
name: "closed",
changes: &Changes{
iter: &iter{
state: stateClosed,
},
},
status: http.StatusBadRequest,
err: "kivik: Iterator is closed",
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
var result interface{}
err := test.changes.ScanDoc(&result)
if d := internal.StatusErrorDiff(test.err, test.status, err); d != "" {
t.Error(d)
}
if d := testy.DiffInterface(test.expected, result); d != nil {
t.Error(d)
}
})
}
}
func TestChanges(t *testing.T) {
tests := []struct {
name string
db *DB
opts Option
expected *Changes
status int
err string
}{
{
name: "db error",
db: &DB{
client: &Client{},
driverDB: &mock.DB{
ChangesFunc: func(context.Context, driver.Options) (driver.Changes, error) {
return nil, errors.New("db error")
},
},
},
status: 500,
err: "db error",
},
{
name: "success",
db: &DB{
client: &Client{},
driverDB: &mock.DB{
ChangesFunc: func(_ context.Context, options driver.Options) (driver.Changes, error) {
expectedOpts := map[string]interface{}{"foo": 123.4}
gotOpts := map[string]interface{}{}
options.Apply(gotOpts)
if d := testy.DiffInterface(expectedOpts, gotOpts); d != nil {
return nil, fmt.Errorf("Unexpected options:\n%s", d)
}
return &mock.Changes{}, nil
},
},
},
opts: Param("foo", 123.4),
expected: &Changes{
iter: &iter{
feed: &changesIterator{
Changes: &mock.Changes{},
},
curVal: &driver.Change{},
},
changesi: &mock.Changes{},
},
},
{
name: "client closed",
db: &DB{
client: &Client{
closed: true,
},
},
status: http.StatusServiceUnavailable,
err: "kivik: client closed",
},
{
name: "db error",
db: &DB{
err: errors.New("db error"),
},
status: http.StatusInternalServerError,
err: "db error",
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
result := test.db.Changes(context.Background(), test.opts)
err := result.Err()
if d := internal.StatusErrorDiff(test.err, test.status, err); d != "" {
t.Error(d)
}
if err != nil {
return
}
result.cancel = nil // Determinism
result. // Determinism
if d := testy.DiffInterface(test.expected, result); d != nil {<
6C27
/div>
t.Error(d)
}
})
}
t.Run("standalone", func(t *testing.T) {
t.Run("after err, close doesn't block", func(t *testing.T) {
db := &DB{
client: &Client{},
driverDB: &mock.DB{
ChangesFunc: func(context.Context, driver.Options) (driver.Changes, error) {
return nil, errors.New("unf")
},
},
}
rows := db.Changes(context.Background())
if err := rows.Err(); err == nil {
t.Fatal("expected an error, got none")
}
_ = db.Close() // Should not block
})
})
}
func TestChanges_uninitialized_should_not_panic(*testing.T) {
// These must not panic, because they can be called before iterating
// begins.
c := &Changes{}
_, _ = c.Metadata()
_ = c.ETag()
}
func TestChanges_Next_resets_iterator_value(t *testing.T) {
idx := 0
db := &DB{
client: &Client{},
driverDB: &mock.DB{
ChangesFunc: func(context.Context, driver.Options) (driver.Changes, error) {
return &mock.Changes{
NextFunc: func(change *driver.Change) error {
idx++
switch idx {
case 1:
change.ID = strconv.Itoa(idx)
return nil
case 2:
return nil
}
return io.EOF
},
}, nil
},
},
}
changes := db.Changes(context.Background())
wantIDs := []string{"1", ""}
gotIDs := []string{}
for changes.Next() {
gotIDs = append(gotIDs, changes.ID())
}
if d := cmp.Diff(wantIDs, gotIDs); d != "" {
t.Error(d)
}
}