chore: move from tools/dsa (#1)

Moved the implementation of this hash table from `tools/dsa` #1.

Reviewed-on: #1
Co-authored-by: M.V. Hutz <git@maximhutz.me>
Co-committed-by: M.V. Hutz <git@maximhutz.me>

cuckoo_internal_test.go

@@ -0,0 +1,30 @@
+package cuckoo
+
+import (
+	"math"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestMaxEvictions(t *testing.T) {
+	assert := assert.New(t)
+
+	for i := 16; i < 116; i++ {
+		table := NewTable[int, bool](Capacity(i / 2))
+		expectedEvictions := 3 * math.Floor(math.Log2(float64(i)))
+
+		assert.Equal(table.maxEvictions(), int(expectedEvictions))
+	}
+}
+
+func TestLoad(t *testing.T) {
+	assert := assert.New(t)
+	table := NewTable[int, bool](Capacity(8))
+
+	for i := range 16 {
+		err := table.Put(i, true)
+		assert.NoError(err)
+		assert.Equal(float64(table.Size())/float64(table.Capacity()), table.load())
+	}
+}