From 2bdd7b2d028273c9c4f96a84352bdb54795ba171 Mon Sep 17 00:00:00 2001
From: bloeys <bloeys@outlook.com>
Date: Fri, 5 Nov 2021 07:39:55 +0400
Subject: [PATCH] Mat4 tests

---
 gglm/mat4_test.go | 153 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)

diff --git a/gglm/mat4_test.go b/gglm/mat4_test.go
index 2aedaee..3b2da19 100755
--- a/gglm/mat4_test.go
+++ b/gglm/mat4_test.go
@@ -6,6 +6,159 @@ import (
 	"github.com/bloeys/gglm/gglm"
 )
 
+func TestMat4GetSet(t *testing.T) {
+
+	m1 := gglm.Mat4{}
+
+	m1.Set(0, 1, -10)
+	m1.Set(1, 0, 55)
+	m1.Set(2, 2, 99)
+	m1.Set(3, 3, 513)
+
+	if m1.Get(0, 1) != -10 {
+		t.Errorf("Got: %v; Expected: %v", m1.Get(0, 1), -10)
+	}
+
+	if m1.Get(1, 0) != 55 {
+		t.Errorf("Got: %v; Expected: %v", m1.Get(1, 0), 55)
+	}
+
+	if m1.Get(2, 2) != 99 {
+		t.Errorf("Got: %v; Expected: %v", m1.Get(2, 2), 99)
+	}
+
+	if m1.Get(3, 3) != 513 {
+		t.Errorf("Got: %v; Expected: %v", m1.Get(3, 3), 513)
+	}
+}
+
+func TestMat4Id(t *testing.T) {
+
+	correctAns := gglm.Mat4{
+		Data: [16]float32{
+			1, 0, 0, 0,
+			0, 1, 0, 0,
+			0, 0, 1, 0,
+			0, 0, 0, 1,
+		}}
+
+	m1 := gglm.NewMat4Id()
+	if !m1.Eq(&correctAns) {
+		t.Errorf("Got: %v; Expected: %v", m1.String(), correctAns.String())
+	}
+}
+
+func TestSubMat4(t *testing.T) {
+
+	correctAns := gglm.Mat4{
+		Data: [16]float32{
+			-16, -16, -16, -16,
+			-16, -16, -16, -16,
+			-16, -16, -16, -16,
+			-16, -16, -16, -16,
+		}}
+
+	m1 := &gglm.Mat4{
+		Data: [16]float32{
+			1, 2, 3, 4,
+			5, 6, 7, 8,
+			9, 10, 11, 12,
+			13, 14, 15, 16,
+		}}
+	m2 := &gglm.Mat4{
+		Data: [16]float32{
+			17, 18, 19, 20,
+			21, 22, 23, 24,
+			25, 26, 27, 28,
+			29, 30, 31, 32,
+		}}
+
+	result := gglm.SubMat4(m1, m2)
+	m1.Sub(m2)
+
+	if !result.Eq(&correctAns) {
+		t.Errorf("Got: %v; Expected: %v", result.String(), correctAns.String())
+	}
+
+	if !m1.Eq(&correctAns) {
+		t.Errorf("Got: %v; Expected: %v", m1.String(), correctAns.String())
+	}
+}
+
+func TestAddMat4(t *testing.T) {
+
+	correctAns := gglm.Mat4{
+		Data: [16]float32{
+			18, 20, 22, 24,
+			26, 28, 30, 32,
+			34, 36, 38, 40,
+			42, 44, 46, 48,
+		}}
+
+	m1 := &gglm.Mat4{
+		Data: [16]float32{
+			1, 2, 3, 4,
+			5, 6, 7, 8,
+			9, 10, 11, 12,
+			13, 14, 15, 16,
+		}}
+	m2 := &gglm.Mat4{
+		Data: [16]float32{
+			17, 18, 19, 20,
+			21, 22, 23, 24,
+			25, 26, 27, 28,
+			29, 30, 31, 32,
+		}}
+
+	result := gglm.AddMat4(m1, m2)
+	m1.Add(m2)
+
+	if !result.Eq(&correctAns) {
+		t.Errorf("Got: %v; Expected: %v", result.String(), correctAns.String())
+	}
+
+	if !m1.Eq(&correctAns) {
+		t.Errorf("Got: %v; Expected: %v", m1.String(), correctAns.String())
+	}
+}
+
+func TestMulMat4(t *testing.T) {
+
+	correctAns := gglm.Mat4{
+		Data: [16]float32{
+			250, 260, 270, 280,
+			618, 644, 670, 696,
+			986, 1028, 1070, 1112,
+			1354, 1412, 1470, 1528,
+		}}
+
+	m1 := &gglm.Mat4{
+		Data: [16]float32{
+			1, 2, 3, 4,
+			5, 6, 7, 8,
+			9, 10, 11, 12,
+			13, 14, 15, 16,
+		}}
+	m2 := &gglm.Mat4{
+		Data: [16]float32{
+			17, 18, 19, 20,
+			21, 22, 23, 24,
+			25, 26, 27, 28,
+			29, 30, 31, 32,
+		}}
+
+	result := gglm.MulMat4(m1, m2)
+	m1.Mul(m2)
+
+	if !result.Eq(&correctAns) {
+		t.Errorf("Got: %v; Expected: %v", result.String(), correctAns.String())
+	}
+
+	if !m1.Eq(&correctAns) {
+		t.Errorf("Got: %v; Expected: %v", m1.String(), correctAns.String())
+	}
+}
+
 func TestMulMat4Vec4(t *testing.T) {
 
 	m := &gglm.Mat4{