add ToString method, testcode

Author: deeean

vector2/vector2.go

@@ -1,6 +1,9 @@
 package vector2
 
-import "math"
+import (
+	"fmt"
+	"math"
+)
 
 const Epsilon = 0.00001
 
@@ -137,3 +140,7 @@ func (v *Vector2) Reflect(other *Vector2) *Vector2 {
 func (v *Vector2) Equals(other *Vector2) bool {
 	return v.X == other.X && v.Y == other.Y
 }
+
+func (v *Vector2) ToString() string {
+	return fmt.Sprintf("Vector2(%f, %f)", v.X, v.Y)
+}

vector2/vector2_test.go

@@ -1,6 +1,7 @@
 package vector2
 
 import (
+	"fmt"
 	"github.com/stretchr/testify/assert"
 	"testing"
 )
@@ -189,6 +190,11 @@ func TestVector2_Equals(t *testing.T) {
 	assert.False(t, a.Equals(b))
 }
 
+func TestVector2_ToString(t *testing.T) {
+	a := New(3, 6)
+	assert.Equal(t, a.ToString(), fmt.Sprintf("Vector2(%f, %f)", a.X, a.Y))
+}
+
 func TestDistance(t *testing.T) {
 	a := New(1, 2)
 	b := New(4, 3)

vector3/vector3.go

@@ -1,6 +1,9 @@
 package vector3
 
-import "math"
+import (
+	"fmt"
+	"math"
+)
 
 const Epsilon = 0.00001
 
@@ -160,3 +163,7 @@ func (v *Vector3) Reflect(other *Vector3) *Vector3 {
 func (v *Vector3) Equals(other *Vector3) bool {
 	return v.X == other.X && v.Y == other.Y && v.Z == other.Z
 }
+
+func (v *Vector3) ToString() string {
+	return fmt.Sprintf("Vector3(%f, %f, %f)", v.X, v.Y, v.Z)
+}

vector3/vector3_test.go

@@ -1,6 +1,7 @@
 package vector3
 
 import (
+	"fmt"
 	"github.com/stretchr/testify/assert"
 	"testing"
 )
@@ -217,6 +218,11 @@ func TestVector3_Equals(t *testing.T) {
 	assert.False(t, a.Equals(b))
 }
 
+func TestVector2_ToString(t *testing.T) {
+	a := New(3, 6, 2)
+	assert.Equal(t, a.ToString(), fmt.Sprintf("Vector3(%f, %f, %f)", a.X, a.Y, a.Z))
+}
+
 func TestDistance(t *testing.T) {
 	a := New(1, 2, 3)
 	b := New(4, 3, 1)