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package set
import (
"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}, s.Values())
// Unrelated elements are unaffected
assert.True(t, s.Contains(1))
assert.False(t, s.Contains(3))
}
func TestAddSlice(t *testing.T) {
s := NewWithValues(1)
s.Add(2)
s.AddSlice([]int{3, 4})
assert.ElementsMatch(t, []int{1, 2, 3, 4}, s.Values())
}
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 TestValues(t *testing.T) {
s := New[int]()
assert.Empty(t, s.Values())
s.Add(1)
s.Add(2)
// ignore duplicate
s.Add(2)
assert.ElementsMatch(t, []int{1, 2}, s.Values())
}
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