Badgerhold queries don't work with both badgerhold.Key and In operator

[b-tarczynski]

Running badgerhold Find or DeleteMatching query against badgerhold.Key with In operator causes error: unexpected EOF. Also it would be nice to include tests that use both badgerhold.Key and In operator.

Code that reproduces bug:

type TestStruct struct {
    Value int
}

func TestBadgerFind(t *testing.T) {
    options := bh.DefaultOptions
    options.InMemory = true
    store, err := bh.Open(options)
    require.NoError(t, err)
    defer func() {
        err = store.Close()
        require.NoError(t, err)
    }()

    for i := 0; i < 5; i++ {
        err = store.Insert(i, TestStruct{i})
        require.NoError(t, err)
    }

    results := make([]TestStruct, 0, 5)
    err = store.Find(
        &results,
        bh.Where(bh.Key).In(0, 1, 2, 3, 4),
    )
    // results in unexpected EOF
    require.NoError(t, err)
    require.Len(t, results, 5)
}

badgerhold version: 74e0215974cf go version: go1.16.5 darwin/arm64

[timshannon]

Thanks for reporting the issue. Should be fixed in master.