github.com/bytedance/gopkg@v0.0.0-20240514070511-01b2cbcf35e1/collection/skipset/flag_test.go (about)

     1  // Copyright 2021 ByteDance Inc.
     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 skipset
    16  
    17  import (
    18  	"testing"
    19  )
    20  
    21  func TestFlag(t *testing.T) {
    22  	// Correctness.
    23  	const (
    24  		f0 = 1 << iota
    25  		f1
    26  		f2
    27  		f3
    28  		f4
    29  		f5
    30  		f6
    31  		f7
    32  	)
    33  	x := &bitflag{}
    34  
    35  	x.SetTrue(f1 | f3)
    36  	if x.Get(f0) || !x.Get(f1) || x.Get(f2) || !x.Get(f3) || !x.MGet(f0|f1|f2|f3, f1|f3) {
    37  		t.Fatal("invalid")
    38  	}
    39  	x.SetTrue(f1)
    40  	x.SetTrue(f1 | f3)
    41  	if x.data != f1+f3 {
    42  		t.Fatal("invalid")
    43  	}
    44  
    45  	x.SetFalse(f1 | f2)
    46  	if x.Get(f0) || x.Get(f1) || x.Get(f2) || !x.Get(f3) || !x.MGet(f0|f1|f2|f3, f3) {
    47  		t.Fatal("invalid")
    48  	}
    49  	x.SetFalse(f1 | f2)
    50  	if x.data != f3 {
    51  		t.Fatal("invalid")
    52  	}
    53  }