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[WIP] tests transform it into BDD Style

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NADAL Jean-Baptiste
2024-02-13 18:41:42 +01:00
parent c3d3a85f08
commit bac26441c5
6 changed files with 1635 additions and 731 deletions
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tests/01_tuples.cpp
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@@ -35,318 +35,594 @@ using namespace Raytracer;
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] a tuple with w=1.0 is a point", "[Tuple]")
SCENARIO("A tuple with w=1.0 is a point", "[features/tuples.feature]")
{
Tuple a(4.3, -4.2, 3.1, 1.0);
REQUIRE(a.x() == 4.3);
REQUIRE(a.y() == -4.2);
REQUIRE(a.z() == 3.1);
REQUIRE(a.w() == 1.0);
REQUIRE(a.is_point() == true);
REQUIRE(a.is_vector() == false);
GIVEN("A tuple with w=1.0 is a point")
{
Tuple a(4.3, -4.2, 3.1, 1.0);
THEN("a.x = 4.3")
{
REQUIRE(a.x() == 4.3);
}
AND_THEN("a.y = -4.2")
{
REQUIRE(a.y() == -4.2);
}
AND_THEN("a.z = 3.1")
{
REQUIRE(a.z() == 3.1);
}
AND_THEN("a.w = 1.0")
{
REQUIRE(a.w() == 1.0);
}
AND_THEN("a is a point")
{
REQUIRE(a.is_point() == true);
}
AND_THEN("a is not a vector")
{
REQUIRE(a.is_vector() == false);
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] a tuple with w=0 is a vector", "[Tuple]")
SCENARIO("A tuple with w=0 is a vector", "[features/tuples.feature]")
{
Tuple a(4.3, -4.2, 3.1, 0.0);
REQUIRE(a.x() == 4.3);
REQUIRE(a.y() == -4.2);
REQUIRE(a.z() == 3.1);
REQUIRE(a.w() == 0.0);
REQUIRE(a.is_point() == false);
GIVEN("a <-tuple(4.3, -4.2, 3.1, 0.0)")
{
Tuple a(4.3, -4.2, 3.1, 0.0);
THEN("a.x = 4.3")
{
REQUIRE(a.x() == 4.3);
}
AND_THEN("a.y = -4.2")
{
REQUIRE(a.y() == -4.2);
}
AND_THEN("a.z = 3.1")
{
REQUIRE(a.z() == 3.1);
}
AND_THEN("a.w = 0.0")
{
REQUIRE(a.w() == 0.0);
}
AND_THEN("a is not a point")
{
REQUIRE(a.is_point() == false);
}
AND_THEN("a is a vector")
{
REQUIRE(a.is_vector() == true);
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] access of data with []", "[Tuple]")
SCENARIO("Access of data with []", "[features/tuples.feature]")
{
Tuple a(4.3, -4.2, 3.1, 0.0);
REQUIRE(a[0] == 4.3);
REQUIRE(a[1] == -4.2);
REQUIRE(a[2] == 3.1);
REQUIRE(a[3] == 0.0);
GIVEN(" a <- tuple(4.3, -4.2, 3.1, 0.0)")
{
Tuple a(4.3, -4.2, 3.1, 0.0);
THEN("a[0] = 4.3")
{
REQUIRE(a[0] == 4.3);
}
AND_THEN("a[1] = -4.2")
{
REQUIRE(a[1] == -4.2);
}
AND_THEN("a[2] = 3.1")
{
REQUIRE(a[2] == 3.1);
}
AND_THEN("a[3] = 0.0")
{
REQUIRE(a[3] == 0.0);
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] constructor with std::vector", "[Tuple]")
SCENARIO("A constructor with std::vector", "[features/tuples.feature]")
{
std::vector<double> v = {4.3, -4.2, 3.1, 0.0};
Tuple a(v);
GIVEN(" a <- tuple with {4.3, -4.2, 3.1, 0.0}")
{
std::vector<double> v = {4.3, -4.2, 3.1, 0.0};
Tuple a(v);
REQUIRE(a[0] == 4.3);
REQUIRE(a[1] == -4.2);
REQUIRE(a[2] == 3.1);
REQUIRE(a[3] == 0.0);
THEN("a[0] = 4.3")
{
REQUIRE(a[0] == 4.3);
}
AND_THEN("a[1] = -4.2")
{
REQUIRE(a[1] == -4.2);
}
AND_THEN("a[2] = 3.1")
{
REQUIRE(a[2] == 3.1);
}
AND_THEN("a[3] = 0.0")
{
REQUIRE(a[3] == 0.0);
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] test copy constructor", "[Tuple]")
SCENARIO("A test copy constructor", "[features/tuples.feature]")
{
Tuple a;
Tuple b(4.3, -4.2, 3.1, 0.0);
a = b;
REQUIRE(a[0] == 4.3);
REQUIRE(a[1] == -4.2);
REQUIRE(a[2] == 3.1);
REQUIRE(a[3] == 0.0);
GIVEN(" a <- tuple(4.3, -4.2, 3.1, 0.0)")
{
Tuple a(4.3, -4.2, 3.1, 0.0);
AND_GIVEN(" b <- tuple")
{
Tuple b;
WHEN("b = a")
{
b = a;
THEN("b[0] = 4.3")
{
REQUIRE(b[0] == 4.3);
}
AND_THEN("b[1] = -4.2")
{
REQUIRE(b[1] == -4.2);
}
AND_THEN("b[2] = 3.1")
{
REQUIRE(b[2] == 3.1);
}
AND_THEN("b[3] = 0.0")
{
REQUIRE(b[3] == 0.0);
}
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Tuple could be copy", "[Tuple]")
SCENARIO("Tuple could be copy", "[features/tuples.feature]")
{
Tuple p = Tuple::Point(4, -4, 3);
Tuple n;
n = p;
REQUIRE(n == p);
GIVEN("p <-point(4, -4, 3)")
{
Tuple p = Tuple::Point(4, -4, 3);
Tuple n;
WHEN("n <- p")
{
n = p;
THEN(" n = p")
{
REQUIRE(n == p);
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Point() creates tuples with w=1", "[Tuple][Point]")
SCENARIO("Point() creates tuples with w=1", "[features/tuples.feature]")
{
Tuple p = Tuple::Point(4, -4, 3);
REQUIRE(p == Tuple(4, -4, 3, 1));
GIVEN("p <-point(4, -4, 3)")
{
Tuple p = Tuple::Point(4, -4, 3);
THEN("p = tuple(4,-4, 3, 1)")
{
REQUIRE(p == Tuple(4, -4, 3, 1));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Vector() creates tuples with w=0", "[Tuple][Vector]")
SCENARIO("Vector() creates tuples with w=0", "[features/tuples.feature]")
{
Tuple v = Tuple::Vector(4, -4, 3);
REQUIRE(v == Tuple(4, -4, 3, 0));
GIVEN("v <-vector(4, -4, 3)")
{
Tuple v = Tuple::Vector(4, -4, 3);
THEN("v = tuple(4,-4, 3, 1)")
{
REQUIRE(v == Tuple(4, -4, 3, 0));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Adding two tuples", "[Tuple][Operations]")
SCENARIO("Adding two tuples", "[features/tuples.feature]")
{
Tuple a1(3, -2, 5, 1);
Tuple a2(-2, 3, 1, 0);
REQUIRE((a1 + a2) == Tuple(1, 1, 6, 1));
GIVEN("a1 <-tuple(3, -2, 5, 1)")
{
Tuple a1(3, -2, 5, 1);
AND_GIVEN("a2 <- tuple(-2, 3, 1, 0)")
{
Tuple a2(-2, 3, 1, 0);
THEN("a1 + a2 = tuple(1, 1, 6, 1)")
{
REQUIRE((a1 + a2) == Tuple(1, 1, 6, 1));
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Adding two tuples without modify a1", "[Tuple][Operations]")
SCENARIO("Adding two tuples without modify a1", "[features/tuples.feature]")
{
Tuple a1(3, -2, 5, 1);
Tuple a2(-2, 3, 1, 0);
Tuple a3 = a1 + a2;
REQUIRE((a1 + a2) == Tuple(1, 1, 6, 1));
GIVEN("a1 <-tuple(3, -2, 5, 1)")
{
Tuple a1(3, -2, 5, 1);
AND_GIVEN("a2 <- tuple(-2, 3, 1, 0)")
{
Tuple a2(-2, 3, 1, 0);
WHEN("a3 = a1 + a2")
{
Tuple a3 = a1 + a2;
THEN("a1 + a2 = tuple(1, 1, 6, 1)")
{
REQUIRE((a1 + a2) == Tuple(1, 1, 6, 1));
}
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Subtracting two points", "[Tuple][Operations]")
SCENARIO("Subtracting two points", "[features/tuples.feature]")
{
Tuple p1 = Tuple::Point(3, 2, 1);
Tuple p2 = Tuple::Point(5, 6, 7);
REQUIRE((p1 - p2) == Tuple::Vector(-2, -4, -6));
GIVEN("p1 <- point(3, 2, 1)")
{
Tuple p1 = Tuple::Point(3, 2, 1);
AND_GIVEN("p2 <- point(5, 6, 7)")
{
Tuple p2 = Tuple::Point(5, 6, 7);
THEN("p1 - p2 = vector(-2, -4, -6)")
{
REQUIRE((p1 - p2) == Tuple::Vector(-2, -4, -6));
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Subtracting two points without modify p1", "[Tuple][Operations]")
SCENARIO("Subtracting two points without modify p1", "[features/tuples.feature]")
{
Tuple p1 = Tuple::Point(3, 2, 1);
Tuple p2 = Tuple::Point(5, 6, 7);
GIVEN("p1 <- point(3, 2, 1)")
{
Tuple p1 = Tuple::Point(3, 2, 1);
AND_GIVEN("p2 <- point(5, 6, 7)")
{
Tuple p2 = Tuple::Point(5, 6, 7);
Tuple p3 = p1 - p2;
REQUIRE((p1 - p2) == Tuple::Vector(-2, -4, -6));
WHEN("p3 = p1 - p2")
{
Tuple p3 = p1 - p2;
THEN("(p1 - p2) = vector(-2, -4, -6)")
{
REQUIRE((p1 - p2) == Tuple::Vector(-2, -4, -6));
}
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Subtracting a vector from a point", "[Tuple][Operations]")
SCENARIO("Subtracting a vector from a point", "[features/tuples.feature]")
{
Tuple p = Tuple::Point(3, 2, 1);
Tuple v = Tuple::Vector(5, 6, 7);
GIVEN("p <- point(3, 2, 1)")
{
Tuple p = Tuple::Point(3, 2, 1);
REQUIRE((p - v) == Tuple::Point(-2, -4, -6));
AND_GIVEN("v <-vector(5, 6, 7)")
{
Tuple v = Tuple::Vector(5, 6, 7);
THEN("p - v = point(-2, -4, -6)")
{
REQUIRE((p - v) == Tuple::Point(-2, -4, -6));
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Subtracting two vectors", "[Tuple][Operations]")
SCENARIO("Subtracting two vectors", "[features/tuples.feature]")
{
Tuple v1 = Tuple::Vector(3, 2, 1);
Tuple v2 = Tuple::Vector(5, 6, 7);
REQUIRE((v1 - v2) == Tuple::Vector(-2, -4, -6));
GIVEN("v1 <-vector(3, 2, 1)")
{
Tuple v1 = Tuple::Vector(3, 2, 1);
AND_GIVEN("v2 <-vector(5, 6, 7)")
{
Tuple v2 = Tuple::Vector(5, 6, 7);
THEN("v1 - v2 = vector(-2, -4, -6)")
{
REQUIRE((v1 - v2) == Tuple::Vector(-2, -4, -6));
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Subtracting a vector from the zero vector", "[Tuple][Operations]")
SCENARIO("Subtracting a vector from the zero vector", "[features/tuples.feature]")
{
Tuple zero = Tuple::Vector(0, 0, 0);
Tuple v = Tuple::Vector(1, -2, 3);
REQUIRE((zero - v) == Tuple::Vector(-1, 2, -3));
GIVEN("zero <-vector(0, 0, 0)")
{
Tuple zero = Tuple::Vector(0, 0, 0);
AND_GIVEN("v <-vector(1, -2, 3)")
{
Tuple v = Tuple::Vector(1, -2, 3);
THEN("zero - v = vector(-1, 2, -3)")
{
REQUIRE((zero - v) == Tuple::Vector(-1, 2, -3));
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Negative a tuple", "[Tuple][Operations]")
SCENARIO("Negative a tuple", "[features/tuples.feature]")
{
Tuple a(1, -2, 3, -4);
REQUIRE(-a == Tuple(-1, 2, -3, 4));
GIVEN("a <-tuple(1, -2, 3, -4)")
{
Tuple a(1, -2, 3, -4);
THEN("-a = tuple(-1, 2, -3, 4)")
{
REQUIRE(-a == Tuple(-1, 2, -3, 4));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Multiplying a tuple by a scalar", "[Tuple][Multiplication]")
SCENARIO("Multiplying a tuple by a scalar", "[features/tuples.feature]")
{
Tuple a(1, -2, 3, -4);
REQUIRE(a * 3.5 == Tuple(3.5, -7, 10.5, -14));
GIVEN("a <-tuple(1, -2, 3, -4)")
{
Tuple a(1, -2, 3, -4);
THEN("a * 3.5 = tuple(3.5, -7, 10.5, -14)")
{
REQUIRE(a * 3.5 == Tuple(3.5, -7, 10.5, -14));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Multiplying a tuple by a scalar without modify a", "[Tuple][Multiplication]")
SCENARIO("Multiplying a tuple by a scalar without modify a", "[features/tuples.feature]")
{
Tuple a(1, -2, 3, -4);
Tuple b = a * 3.5;
REQUIRE(a * 3.5 == Tuple(3.5, -7, 10.5, -14));
GIVEN("a <-tuple(1, -2, 3, -4)")
{
Tuple a(1, -2, 3, -4);
WHEN("b = a * 3.5;")
{
Tuple b = a * 3.5;
THEN("a * 3.5 = tuple(3.5, -7, 10.5, -14)")
{
REQUIRE(a * 3.5 == Tuple(3.5, -7, 10.5, -14));
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Dividing a tuple by a scalar", "[Tuple][Multiplication]")
SCENARIO("Multiplying a tuple by a fraction", "[features/tuples.feature]")
{
Tuple a(1, -2, 3, -4);
REQUIRE(a / 2 == Tuple(0.5, -1, 1.5, -2));
GIVEN("a <-tuple(1, -2, 3, -4)")
{
Tuple a(1, -2, 3, -4);
THEN("a * 0.5 = tuple(0.5, -1, 1.5, -2)")
{
REQUIRE(a * 0.5 == Tuple(0.5, -1, 1.5, -2));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Dividing a tuple by a scalar without modify a", "[Tuple][Multiplication]")
SCENARIO("Dividing a tuple by a scalar", "[features/tuples.feature]")
{
Tuple a(1, -2, 3, -4);
Tuple b = a / 2;
REQUIRE(a / 2 == Tuple(0.5, -1, 1.5, -2));
GIVEN("a <-tuple(1, -2, 3, -4)")
{
Tuple a(1, -2, 3, -4);
THEN("a / 2 = tuple(0.5, -1, 1.5, -2)")
{
REQUIRE(a / 2 == Tuple(0.5, -1, 1.5, -2));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Computing the magnitude of vector(1,0,0)", "[Tuple][Magnitude]")
SCENARIO("Dividing a tuple by a scalar without modify a", "[features/tuples.feature]")
{
Tuple v = Tuple::Vector(1, 0, 0);
REQUIRE(v.magnitude() == 1);
GIVEN("a <-tuple(1, -2, 3, -4)")
{
Tuple a(1, -2, 3, -4);
WHEN("b = a / 2")
{
Tuple b = a / 2;
THEN("a / 2 = tuple(0.5, -1, 1.5, -2)")
{
REQUIRE(a / 2 == Tuple(0.5, -1, 1.5, -2));
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Computing the magnitude of vector(0,1,0)", "[Tuple][Magnitude]")
SCENARIO("Computing the magnitude of vector(1,0,0)", "[features/tuples.feature]")
{
Tuple v = Tuple::Vector(0, 1, 0);
REQUIRE(v.magnitude() == 1);
GIVEN("v <-vector(1, 0, 0)")
{
Tuple v = Tuple::Vector(1, 0, 0);
THEN("magnitude(v) = 1")
{
REQUIRE(v.magnitude() == 1);
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Computing the magnitude of vector(0,0,1)", "[Tuple][Magnitude]")
SCENARIO("Computing the magnitude of vector(0,1,0)", "[features/tuples.feature]")
{
Tuple v = Tuple::Vector(0, 0, 1);
GIVEN("v <-vector(0, 1, 0)")
{
Tuple v = Tuple::Vector(0, 1, 0);
REQUIRE(v.magnitude() == 1);
THEN("magnitude(v) = 1")
{
REQUIRE(v.magnitude() == 1);
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Computing the magnitude of vector(1,2,3)", "[Tuple][Magnitude]")
SCENARIO("Computing the magnitude of vector(0,0,1)", "[features/tuples.feature]")
{
Tuple v = Tuple::Vector(1, 2, 3);
GIVEN("v <-vector(0, 0, 1)")
{
Tuple v = Tuple::Vector(0, 0, 1);
REQUIRE(v.magnitude() == sqrt(14));
THEN("magnitude(v) = 1")
{
REQUIRE(v.magnitude() == 1);
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Computing the magnitude of vector(-1,-2,-3)", "[Tuple][Magnitude]")
SCENARIO("Computing the magnitude of vector(1,2,3)", "[features/tuples.feature]")
{
Tuple v = Tuple::Vector(-1, -2, -3);
GIVEN("v <-vector(1, 2, 3)")
{
Tuple v = Tuple::Vector(1, 2, 3);
REQUIRE(v.magnitude() == sqrt(14));
THEN("magnitude(v) = sqrt(14)")
{
REQUIRE(v.magnitude() == sqrt(14));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Normalize vector(4,0,0) gives (1,0,0)", "[Tuple][Normalize]")
SCENARIO("Computing the magnitude of vector(-1,-2,-3)", "[features/tuples.feature]")
{
Tuple v = Tuple::Vector(4, 0, 0);
GIVEN("v <-vector(-1, -2, -3)")
{
Tuple v = Tuple::Vector(-1, -2, -3);
REQUIRE(v.normalize() == Tuple::Vector(1, 0, 0));
THEN("magnitude(v) = sqrt(14)")
{
REQUIRE(v.magnitude() == sqrt(14));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] Normalize vector(1,2,3)", "[Tuple][Normalize]")
SCENARIO("Normalize vector(4,0,0) gives (1,0,0)", "[features/tuples.feature]")
{
Tuple v = Tuple::Vector(1, 2, 3);
REQUIRE(v.normalize() == Tuple::Vector(1 / sqrtf(14), 2 / sqrtf(14), 3 / sqrtf(14)));
GIVEN("v <-vector(4, 0, 0)")
{
Tuple v = Tuple::Vector(4, 0, 0);
THEN("normalize(v) = vector(1, 0, 0)")
{
REQUIRE(v.normalize() == Tuple::Vector(1, 0, 0));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] The magnitude of a normalized vector", "[Tuple][Normalize]")
SCENARIO("Normalize vector(1,2,3)", "[features/tuples.feature]")
{
Tuple norm;
Tuple v = Tuple::Vector(1, 2, 3);
norm = v.normalize();
REQUIRE(norm.magnitude() == 1);
GIVEN("v <-vector(1, 2, 3)")
{
Tuple v = Tuple::Vector(1, 2, 3);
// vector (1/sqrt(14), 2/sqrt(14), 3/sqrt(14))
THEN("normalize(v) = approximately vector(0.26726, 0.53452, 0.80178)")
{
REQUIRE(v.normalize() == Tuple::Vector(1 / sqrtf(14), 2 / sqrtf(14), 3 / sqrtf(14)));
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] The dot product of two tuples", "[Tuple][Dot]")
SCENARIO("The magnitude of a normalized vector", "[features/tuples.feature]")
{
Tuple a = Tuple::Vector(1, 2, 3);
Tuple b = Tuple::Vector(2, 3, 4);
REQUIRE(a.dot(b) == 20);
GIVEN("v <-vector(1, 2, 3)")
{
Tuple v = Tuple::Vector(1, 2, 3);
Tuple norm;
WHEN("norm <- normalize(v)")
{
norm = v.normalize();
THEN("magnitude(norm) = 1")
{
REQUIRE(norm.magnitude() == 1);
}
}
}
}
/* ------------------------------------------------------------------------- */
TEST_CASE("[01][Tuple] The cross product of two vector", "[Tuple][Cross]")
SCENARIO("The dot product of two tuples", "[features/tuples.feature]")
{
Tuple a = Tuple::Vector(1, 2, 3);
Tuple b = Tuple::Vector(2, 3, 4);
GIVEN("a <-vector(1, 2, 3)")
{
Tuple a = Tuple::Vector(1, 2, 3);
REQUIRE(a.cross(b) == Tuple::Vector(-1, 2, -1));
REQUIRE(b.cross(a) == Tuple::Vector(1, -2, 1));
AND_GIVEN("b <-vector(2, 3, 4)")
{
Tuple b = Tuple::Vector(2, 3, 4);
THEN("dot(a,b) = 20")
{
REQUIRE(a.dot(b) == 20);
}
}
}
}
/* ------------------------------------------------------------------------- */
SCENARIO("The cross product of two vectors", "[features/tuples.feature]")
{
GIVEN("a <-vector(1, 2, 3)")
{
Tuple a = Tuple::Vector(1, 2, 3);
AND_GIVEN("b <-vector(2, 3, 4)")
{
Tuple b = Tuple::Vector(2, 3, 4);
THEN("cross(a,b) = vector(-1, 2, -1)")
{
REQUIRE(a.cross(b) == Tuple::Vector(-1, 2, -1));
}
AND_THEN("cross(b,a) = vector(1, -2, -1)")
{
REQUIRE(b.cross(a) == Tuple::Vector(1, -2, 1));
}
}
}
}