Matrix m1 = new Matrix();
assertFalse(m1.isIdentity());
m1.setValues(new float[] { 1,0,0, 0,1,0, 0,0,1 });
assertTrue(m1.isIdentity());
Matrix m2 = new Matrix(m1);
float[] v1 = new float[9];
float[] v2 = new float[9];
m1.getValues(v1);
m2.getValues(v2);
for (int i = 0 ; i < 9; i++) {
assertEquals(v1[i], v2[i]);
}