feat: three sum

pkg/three_sum/main_test.go

@@ -0,0 +1,26 @@
+package three_sum_test
+
+import (
+	"testing"
+
+	"git.maximhutz.com/practice/pkg/three_sum"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test1(t *testing.T) {
+	assert.ElementsMatch(t,
+		[][]int{{-1, -1, 2}, {-1, 0, 1}},
+		three_sum.ThreeSum([]int{-1, 0, 1, 2, -1, -4}))
+}
+
+func Test2(t *testing.T) {
+	assert.Equal(t,
+		[][]int{},
+		three_sum.ThreeSum([]int{0, 1, 1}))
+}
+
+func Test3(t *testing.T) {
+	assert.Equal(t,
+		[][]int{{0, 0, 0}},
+		three_sum.ThreeSum([]int{0, 0, 0}))
+}