feat: monday

pkg/trapping_rain_water/main_test.go

@@ -0,0 +1,31 @@
+package trapping_rain_water
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTrap_Example1(t *testing.T) {
+	height := []int{0, 1, 0, 2, 1, 0, 1, 3, 2, 1, 2, 1}
+	expected := 6
+	result := Trap(height)
+
+	assert.Equal(t, expected, result)
+}
+
+func TestTrap_Example2(t *testing.T) {
+	height := []int{4, 2, 0, 3, 2, 5}
+	expected := 9
+	result := Trap(height)
+
+	assert.Equal(t, expected, result)
+}
+
+func TestTrap_Example3(t *testing.T) {
+	height := []int{0}
+	expected := 0
+	result := Trap(height)
+
+	assert.Equal(t, expected, result)
+}