go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/buildbucket/appengine/model/sequence_test.go (about)

     1  // Copyright 2020 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package model
    16  
    17  import (
    18  	"context"
    19  	"testing"
    20  
    21  	"go.chromium.org/luci/gae/impl/memory"
    22  	"go.chromium.org/luci/gae/service/datastore"
    23  
    24  	. "github.com/smartystreets/goconvey/convey"
    25  )
    26  
    27  func TestSequence(t *testing.T) {
    28  	t.Parallel()
    29  
    30  	Convey("GenerateSequenceNumbers", t, func() {
    31  		ctx := memory.Use(context.Background())
    32  		datastore.GetTestable(ctx).AutoIndex(true)
    33  		datastore.GetTestable(ctx).Consistent(true)
    34  
    35  		Convey("not found", func() {
    36  			Convey("zero", func() {
    37  				seq, err := GenerateSequenceNumbers(ctx, "seq", 0)
    38  				So(err, ShouldBeNil)
    39  				So(seq, ShouldEqual, 1)
    40  
    41  				seq, err = GenerateSequenceNumbers(ctx, "seq", 0)
    42  				So(err, ShouldBeNil)
    43  				So(seq, ShouldEqual, 1)
    44  			})
    45  
    46  			Convey("one", func() {
    47  				seq, err := GenerateSequenceNumbers(ctx, "seq", 1)
    48  				So(err, ShouldBeNil)
    49  				So(seq, ShouldEqual, 1)
    50  
    51  				seq, err = GenerateSequenceNumbers(ctx, "seq", 1)
    52  				So(err, ShouldBeNil)
    53  				So(seq, ShouldEqual, 2)
    54  			})
    55  
    56  			Convey("many", func() {
    57  				seq, err := GenerateSequenceNumbers(ctx, "seq", 10)
    58  				So(err, ShouldBeNil)
    59  				So(seq, ShouldEqual, 1)
    60  
    61  				seq, err = GenerateSequenceNumbers(ctx, "seq", 10)
    62  				So(err, ShouldBeNil)
    63  				So(seq, ShouldEqual, 11)
    64  			})
    65  		})
    66  
    67  		Convey("found", func() {
    68  			So(datastore.Put(ctx, &NumberSequence{
    69  				ID:   "seq",
    70  				Next: 2,
    71  			}), ShouldBeNil)
    72  
    73  			Convey("zero", func() {
    74  				seq, err := GenerateSequenceNumbers(ctx, "seq", 0)
    75  				So(err, ShouldBeNil)
    76  				So(seq, ShouldEqual, 2)
    77  
    78  				seq, err = GenerateSequenceNumbers(ctx, "seq", 0)
    79  				So(err, ShouldBeNil)
    80  				So(seq, ShouldEqual, 2)
    81  			})
    82  
    83  			Convey("one", func() {
    84  				seq, err := GenerateSequenceNumbers(ctx, "seq", 1)
    85  				So(err, ShouldBeNil)
    86  				So(seq, ShouldEqual, 2)
    87  
    88  				seq, err = GenerateSequenceNumbers(ctx, "seq", 1)
    89  				So(err, ShouldBeNil)
    90  				So(seq, ShouldEqual, 3)
    91  			})
    92  
    93  			Convey("many", func() {
    94  				seq, err := GenerateSequenceNumbers(ctx, "seq", 10)
    95  				So(err, ShouldBeNil)
    96  				So(seq, ShouldEqual, 2)
    97  
    98  				seq, err = GenerateSequenceNumbers(ctx, "seq", 10)
    99  				So(err, ShouldBeNil)
   100  				So(seq, ShouldEqual, 12)
   101  			})
   102  		})
   103  	})
   104  }