idiomatic project structure

internal/utils/hashset_test.go

@@ -0,0 +1,35 @@
+package utils
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestSet(t *testing.T) {
+	intSet := make(Set[int])
+	intSet.Add(1)
+	intSet.Add(2)
+	assert.EqualValues(t, intSet.Size(), 2)
+	intSet.Add(3)
+	intSet.Add(3)
+	assert.EqualValues(t, intSet.Size(), 3)
+	intSet.Remove(2)
+	assert.EqualValues(t, intSet.Size(), 2)
+	assert.False(t, intSet.Contains(2))
+	assert.True(t, intSet.Contains(1))
+
+	list := intSet.ToSlice()
+	assert.Contains(t, list, 1)
+	assert.Contains(t, list, 3)
+}
+
+func TestSet_Copy(t *testing.T) {
+	intSet := NewSetFromSlice[int]([]int{1, 2, 3})
+
+	copySet := intSet.Copy()
+
+	intSet.Remove(1)
+	assert.Equal(t, intSet.Size(), 2)
+	assert.Equal(t, copySet.Size(), 3)
+
+}