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|
package set
import (
"slices"
"testing"
"github.com/stretchr/testify/assert"
)
func TestNew(t *testing.T) {
s := New[int]()
assert.True(t, s.Empty())
}
func TestNewWithValues(t *testing.T) {
s := NewWithValues(1, 3)
assert.True(t, s.Contains(1))
assert.False(t, s.Contains(2))
assert.True(t, s.Contains(3))
}
func TestAdd(t *testing.T) {
s := NewWithValues(1)
assert.False(t, s.Contains(2))
s.Add(2)
assert.True(t, s.Contains(2))
s.Add(2) // Adding an already-present element
assert.True(t, s.Contains(2))
// should not contain duplicate value of `2`
assert.ElementsMatch(t, []int{1, 2}, slices.Collect(s.All()))
// Unrelated elements are unaffected
assert.True(t, s.Contains(1))
assert.False(t, s.Contains(3))
}
func TestAddSeq(t *testing.T) {
s := NewWithValues(1)
s.Add(2)
s.AddSeq(slices.Values([]int{3, 4}))
assert.ElementsMatch(t, []int{1, 2, 3, 4}, slices.Collect(s.All()))
}
func TestDelete(t *testing.T) {
s := NewWithValues(1, 2)
assert.True(t, s.Contains(2))
s.Delete(2)
assert.False(t, s.Contains(2))
s.Delete(2) // Deleting a missing element
assert.False(t, s.Contains(2))
// Unrelated elements are unaffected
assert.True(t, s.Contains(1))
}
func TestContains(t *testing.T) {
s := NewWithValues(1, 2)
assert.True(t, s.Contains(1))
assert.True(t, s.Contains(2))
assert.False(t, s.Contains(3))
}
func TestEmpty(t *testing.T) {
s := New[int]()
assert.True(t, s.Empty())
s.Add(1)
assert.False(t, s.Empty())
s.Delete(1)
assert.True(t, s.Empty())
}
func TestAll(t *testing.T) {
s := New[int]()
assert.Empty(t, slices.Collect(s.All()))
s.Add(1)
s.Add(2)
// ignore duplicate
s.Add(2)
assert.ElementsMatch(t, []int{1, 2}, slices.Collect(s.All()))
// Break / return inside the range body (yield function returning false) works
var partial []int
for v := range s.All() {
partial = append(partial, v)
break
}
assert.Len(t, partial, 1)
assert.True(t, partial[0] == 1 || partial[0] == 2)
}
|
