path: root/swarm/shed/field_uint64_test.go

// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package shed

import (
    "testing"

    "github.com/syndtr/goleveldb/leveldb"
)

// TestUint64Field validates put and get operations
// of the Uint64Field.
func TestUint64Field(t *testing.T) {
    db, cleanupFunc := newTestDB(t)
    defer cleanupFunc()

    counter, err := db.NewUint64Field("counter")
    if err != nil {
        t.Fatal(err)
    }

    t.Run("get empty", func(t *testing.T) {
        got, err := counter.Get()
        if err != nil {
            t.Fatal(err)
        }
        var want uint64
        if got != want {
            t.Errorf("got uint64 %v, want %v", got, want)
        }
    })

    t.Run("put", func(t *testing.T) {
        var want uint64 = 42
        err = counter.Put(want)
        if err != nil {
            t.Fatal(err)
        }
        got, err := counter.Get()
        if err != nil {
            t.Fatal(err)
        }
        if got != want {
            t.Errorf("got uint64 %v, want %v", got, want)
        }

        t.Run("overwrite", func(t *testing.T) {
            var want uint64 = 84
            err = counter.Put(want)
            if err != nil {
                t.Fatal(err)
            }
            got, err := counter.Get()
            if err != nil {
                t.Fatal(err)
            }
            if got != want {
                t.Errorf("got uint64 %v, want %v", got, want)
            }
        })
    })

    t.Run("put in batch", func(t *testing.T) {
        batch := new(leveldb.Batch)
        var want uint64 = 42
        counter.PutInBatch(batch, want)
        err = db.WriteBatch(batch)
        if err != nil {
            t.Fatal(err)
        }
        got, err := counter.Get()
        if err != nil {
            t.Fatal(err)
        }
        if got != want {
            t.Errorf("got uint64 %v, want %v", got, want)
        }

        t.Run("overwrite", func(t *testing.T) {
            batch := new(leveldb.Batch)
            var want uint64 = 84
            counter.PutInBatch(batch, want)
            err = db.WriteBatch(batch)
            if err != nil {
                t.Fatal(err)
            }
            got, err := counter.Get()
            if err != nil {
                t.Fatal(err)
            }
            if got != want {
                t.Errorf("got uint64 %v, want %v", got, want)
            }
        })
    })
}

// TestUint64Field_Inc validates Inc operation
// of the Uint64Field.
func TestUint64Field_Inc(t *testing.T) {
    db, cleanupFunc := newTestDB(t)
    defer cleanupFunc()

    counter, err := db.NewUint64Field("counter")
    if err != nil {
        t.Fatal(err)
    }

    var want uint64 = 1
    got, err := counter.Inc()
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }

    want = 2
    got, err = counter.Inc()
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }
}

// TestUint64Field_IncInBatch validates IncInBatch operation
// of the Uint64Field.
func TestUint64Field_IncInBatch(t *testing.T) {
    db, cleanupFunc := newTestDB(t)
    defer cleanupFunc()

    counter, err := db.NewUint64Field("counter")
    if err != nil {
        t.Fatal(err)
    }

    batch := new(leveldb.Batch)
    var want uint64 = 1
    got, err := counter.IncInBatch(batch)
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }
    err = db.WriteBatch(batch)
    if err != nil {
        t.Fatal(err)
    }
    got, err = counter.Get()
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }

    batch2 := new(leveldb.Batch)
    want = 2
    got, err = counter.IncInBatch(batch2)
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }
    err = db.WriteBatch(batch2)
    if err != nil {
        t.Fatal(err)
    }
    got, err = counter.Get()
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }
}

// TestUint64Field_Dec validates Dec operation
// of the Uint64Field.
func TestUint64Field_Dec(t *testing.T) {
    db, cleanupFunc := newTestDB(t)
    defer cleanupFunc()

    counter, err := db.NewUint64Field("counter")
    if err != nil {
        t.Fatal(err)
    }

    // test overflow protection
    var want uint64
    got, err := counter.Dec()
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }

    want = 32
    err = counter.Put(want)
    if err != nil {
        t.Fatal(err)
    }

    want = 31
    got, err = counter.Dec()
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }
}

// TestUint64Field_DecInBatch validates DecInBatch operation
// of the Uint64Field.
func TestUint64Field_DecInBatch(t *testing.T) {
    db, cleanupFunc := newTestDB(t)
    defer cleanupFunc()

    counter, err := db.NewUint64Field("counter")
    if err != nil {
        t.Fatal(err)
    }

    batch := new(leveldb.Batch)
    var want uint64
    got, err := counter.DecInBatch(batch)
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }
    err = db.WriteBatch(batch)
    if err != nil {
        t.Fatal(err)
    }
    got, err = counter.Get()
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }

    batch2 := new(leveldb.Batch)
    want = 42
    counter.PutInBatch(batch2, want)
    err = db.WriteBatch(batch2)
    if err != nil {
        t.Fatal(err)
    }
    got, err = counter.Get()
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }

    batch3 := new(leveldb.Batch)
    want = 41
    got, err = counter.DecInBatch(batch3)
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }
    err = db.WriteBatch(batch3)
    if err != nil {
        t.Fatal(err)
    }
    got, err = counter.Get()
    if err != nil {
        t.Fatal(err)
    }
    if got != want {
        t.Errorf("got uint64 %v, want %v", got, want)
    }
}