tailscale/util/set/slice_test.go

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// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package set
import (
"testing"
qt "github.com/frankban/quicktest"
)
func TestSliceSet(t *testing.T) {
c := qt.New(t)
var ss Slice[int]
c.Check(len(ss.slice), qt.Equals, 0)
ss.Add(1)
c.Check(len(ss.slice), qt.Equals, 1)
c.Check(len(ss.set), qt.Equals, 0)
c.Check(ss.Contains(1), qt.Equals, true)
c.Check(ss.Contains(2), qt.Equals, false)
ss.Add(1)
c.Check(len(ss.slice), qt.Equals, 1)
c.Check(len(ss.set), qt.Equals, 0)
ss.Add(2)
ss.Add(3)
ss.Add(4)
ss.Add(5)
ss.Add(6)
ss.Add(7)
ss.Add(8)
c.Check(len(ss.slice), qt.Equals, 8)
c.Check(len(ss.set), qt.Equals, 0)
ss.Add(9)
c.Check(len(ss.slice), qt.Equals, 9)
c.Check(len(ss.set), qt.Equals, 9)
ss.Remove(4)
c.Check(len(ss.slice), qt.Equals, 8)
c.Check(len(ss.set), qt.Equals, 8)
c.Assert(ss.Contains(4), qt.IsFalse)
// Ensure that the order of insertion is maintained
c.Assert(ss.Slice().AsSlice(), qt.DeepEquals, []int{1, 2, 3, 5, 6, 7, 8, 9})
ss.Add(4)
c.Check(len(ss.slice), qt.Equals, 9)
c.Check(len(ss.set), qt.Equals, 9)
c.Assert(ss.Contains(4), qt.IsTrue)
c.Assert(ss.Slice().AsSlice(), qt.DeepEquals, []int{1, 2, 3, 5, 6, 7, 8, 9, 4})
ss.Add(1, 234, 556)
c.Assert(ss.Slice().AsSlice(), qt.DeepEquals, []int{1, 2, 3, 5, 6, 7, 8, 9, 4, 234, 556})
}