Added a bunch of fnliterals.scad regression tests.

This commit is contained in:
Garth Minette 2021-06-30 17:09:20 -07:00
parent c98a3dfe9a
commit 8ef32210c4
2 changed files with 481 additions and 9 deletions

View file

@ -183,6 +183,12 @@ function accumulate(func, list, init=0) =
// cond = A function literal with signature `function (i,x)`, called to determine if the loop should continue. Returns true if the loop should continue.
// func = A function literal with signature `function (i,x)`, called on each iteration. The returned value is passed as `x` on the next iteration.
// See Also: map(), filter(), reduce(), accumulate(), while(), for_n()
// Example:
// fibs = while(
// init = [1,1],
// cond = function (i,x) select(x,-1)<25,
// func = function (i,x) concat(x, [sum(select(x,-2,-1))])
// ); // Returns: [1,1,2,3,5,8,13,21]
function while(init, cond, func) =
assert(is_function(cond))
assert(is_function(func))
@ -238,9 +244,9 @@ function for_n(n,init,func) =
// Description:
// Finds the first item in `list` which, when compared against `val` using the function literal
// `func` gets a true result. By default, `func` just calls `approx()`. The signature of the
// function literal in `func` is `function (a,b)`, and it is expected to return true when the
// function literal in `func` is `function (val,x)`, and it is expected to return true when the
// two values compare as matching. It should return false otherwise.
// If you need to find *all* matching items in the list, you should probably use {{filter()]] instead.
// If you need to find *all* matching items in the list, you should probably use {{filter()}} instead.
// See Also: map(), filter(), reduce(), accumulate(), while(), for_n(), binsearch()
// Arguments:
// val = The value to look for.
@ -415,7 +421,7 @@ function hashmap(hashsize=127,items,table) =
// fn_str3 = f_str(3); // = function() str(3);
function f_1arg(func) =
function(a)
a==undef? func :
a==undef? function(x) func(x) :
function() func(a);
@ -430,13 +436,14 @@ function f_1arg(func) =
// with a constant.
// Example:
// f_lt = f_2arg(function(a,b) a<b);
// fn_lt = f_lt(); // = function(a,b) a<b;
// fn_lt3 = f_lt(3); // = function(a) a<3;
// fn_3lt = f_lt(a=3); // = function(b) 3<b;
// fn_3lt4 = f_lt(a=3,b=4); // = function() 3<4;
// fn_lt = f_lt(); // = function(a,b) a<b;
// fn_3lt = f_lt(3); // = function(b) 3<b;
// fn_3lt = f_lt(a=3); // = function(b) 3<b;
// fn_lt3 = f_lt(b=3); // = function(a) a<3;
// fn_3lt4 = f_lt(3,4); // = function() 3<4;
function f_2arg(func) =
function(b,a)
a==undef && b==undef? func :
function(a,b)
a==undef && b==undef? function(x,y) func(x,y) :
a==undef? function(x) func(x,b) :
b==undef? function(x) func(a,x) :
function() func(a,b);

465
tests/test_fnliterals.scad Normal file
View file

@ -0,0 +1,465 @@
include <../std.scad>
include <../fnliterals.scad>
module test_map() {
l1 = [1,2,3,4,5,6,7,8];
l2 = [7,3,9,1,6,1,3,2];
x3 = function (x) x*3;
d3 = function (x) x/3;
xx = function (x) x*x;
assert_approx(map(x3,l1), l1*3);
assert_approx(map(x3,l2), l2*3);
assert_approx(map(d3,l1), l1/3);
assert_approx(map(d3,l2), l2/3);
assert_approx(map(xx,l1), [for (x=l1) x*x]);
assert_approx(map(xx,l2), [for (x=l2) x*x]);
}
test_map();
module test_filter() {
l = [7,3,9,1,6,1,3,2];
lt3 = function (x) x<3;
lte3 = function (x) x<=3;
gt3 = function (x) x>3;
gte3 = function (x) x>=3;
assert_equal(filter(lt3,l), [1,1,2]);
assert_equal(filter(lte3,l), [3,1,1,3,2]);
assert_equal(filter(gt3,l), [7,9,6]);
assert_equal(filter(gte3,l), [7,3,9,6,3]);
}
test_filter();
module test_reduce() {
l = [7,3,9,1,6,1,3,2];
add = function (a,b) a+b;
mul = function (a,b) a*b;
assert_equal(reduce(add,l), 32);
assert_equal(reduce(mul,l), 0);
assert_equal(reduce(mul,l,init=1), 6804);
}
test_reduce();
module test_accumulate() {
l = [2,3,9,1,6,1,3,2];
add = function (a,b) a+b;
mul = function (a,b) a*b;
assert_equal(accumulate(add,l), [2,5,14,15,21,22,25,27]);
assert_equal(accumulate(mul,l), [0,0,0,0,0,0,0,0]);
assert_equal(accumulate(mul,l,init=1), [2,6,54,54,324,324,972,1944]);
}
test_accumulate();
module test_while() {
fibs = while(
init = [1,1],
cond = function (i,x) select(x,-1)<25,
func = function (i,x) concat(x, [sum(select(x,-2,-1))])
);
assert_equal(fibs, [1,1,2,3,5,8,13,21,34]);
}
test_while();
module test_for_n() {
fib = function(n) for_n(
n, [],
function(i,x) x? [x[1], x[0]+x[1]] : [0,1]
)[1];
assert_equal(fib(1),1);
assert_equal(fib(2),1);
assert_equal(fib(3),2);
assert_equal(fib(4),3);
assert_equal(fib(5),5);
assert_equal(fib(6),8);
assert_equal(fib(7),13);
assert_equal(fib(8),21);
}
test_for_n();
module test_find_first() {
l = [7,3,9,1,6,1,3,2];
lt = function (val,x) val < x;
lte = function (val,x) val <= x;
gt = function (val,x) val > x;
gte = function (val,x) val >= x;
assert_equal(find_first(1,l), 3);
assert_equal(find_first(1,l,start=4), 5);
assert_equal(find_first(6,l), 4);
assert_equal(find_first(3,l,func=gt ), 3);
assert_equal(find_first(3,l,func=gte), 1);
assert_equal(find_first(3,l,func=lt ), 0);
assert_equal(find_first(7,l,func=lt ), 2);
assert_equal(find_first(7,l,func=lte), 0);
assert_equal(find_first(7,l,start=1,func=gte), 1);
assert_equal(find_first(7,l,start=3,func=gte), 3);
}
//test_find_first();
module test_binsearch() {
l = [3,6,7,9,10,11,13,17,18,19,22,47,53,68,72,79,81,84,85,88,97];
assert_equal(binsearch(1,l), undef);
assert_equal(binsearch(43,l), undef);
assert_equal(binsearch(93,l), undef);
assert_equal(binsearch(99,l), undef);
for (i=idx(l)) {
assert_equal(binsearch(l[i],l), i);
}
}
test_binsearch();
module test_simple_hash() {
assert_equal(simple_hash(true), 1000398);
assert_equal(simple_hash(false), 1028531);
assert_equal(simple_hash(53), 8385);
assert_equal(simple_hash("Foobar"), 1065337);
assert_equal(simple_hash([]), 0);
assert_equal(simple_hash([[10,20],[-5,3]]), 42685374681);
}
test_simple_hash();
module test_f_1arg() {
assert_equal(str(f_1arg(function (x) x)), "function(a) ((a == undef) ? function(x) func(x) : function() func(a))");
assert_equal(str(f_1arg(function (x) x)(3)), "function() func(a)");
assert_equal(f_1arg(function (x) x)()(4), 4);
assert_equal(f_1arg(function (x) x)(3)(), 3);
}
test_f_1arg();
module test_f_2arg() {
assert_equal(str(f_2arg(function (a,b) a+b)), "function(a, b) (((a == undef) && (b == undef)) ? function(x, y) func(x, y) : ((a == undef) ? function(x) func(x, b) : ((b == undef) ? function(x) func(a, x) : function() func(a, b))))");
assert_equal(str(f_2arg(function (a,b) a+b)(3)), "function(x) func(a, x)");
assert_equal(str(f_2arg(function (a,b) a+b)(a=3)), "function(x) func(a, x)");
assert_equal(str(f_2arg(function (a,b) a+b)(b=3)), "function(x) func(x, b)");
assert_equal(str(f_2arg(function (a,b) a+b)(3,4)), "function() func(a, b)");
assert_equal(f_2arg(function (a,b) a+b)()(4,2), 6);
assert_equal(f_2arg(function (a,b) a+b)(3)(7), 10);
assert_equal(f_2arg(function (a,b) a+b)(a=2)(7), 9);
assert_equal(f_2arg(function (a,b) a/b)(a=8)(2), 4);
}
test_f_2arg();
module test_f_3arg() {
assert_equal(str(f_3arg(function (a,b,c) a+b+c)), "function(a, b, c) ((((a == undef) && (b == undef)) && (c == undef)) ? func : (((a == undef) && (b == undef)) ? function(x, y) func(x, y, c) : (((a == undef) && (c == undef)) ? function(x, y) func(x, b, y) : (((b == undef) && (c == undef)) ? function(x, y) func(a, x, y) : ((a == undef) ? function(x) func(x, b, c) : ((b == undef) ? function(x) func(a, x, c) : ((c == undef) ? function(x) func(a, b, x) : function() func(a, b, c))))))))");
assert_equal(str(f_3arg(function (a,b,c) a+b+c)(3)), "function(x, y) func(a, x, y)");
assert_equal(str(f_3arg(function (a,b,c) a+b+c)(3,4)), "function(x) func(a, b, x)");
assert_equal(str(f_3arg(function (a,b,c) a+b+c)(3,4,1)), "function() func(a, b, c)");
assert_equal(f_3arg(function (a,b,c) a+b+c)()(4,2,1), 7);
assert_equal(f_3arg(function (a,b,c) a+b+c)(3)(7,3), 13);
assert_equal(f_3arg(function (a,b,c) a+b+c)(a=2)(7,1), 10);
assert_equal(f_3arg(function (a,b,c) a/b/c)(a=24)(3,2), 4);
assert_equal(f_3arg(function (a,b,c) a+b+c)(3,7)(3), 13);
assert_equal(f_3arg(function (a,b,c) a+b+c)(3,7,3)(), 13);
}
test_f_3arg();
module test_ival() {
assert_equal(str(ival(function (a) a)), "function(a, b) func(a)");
assert_equal(ival(function (a) a)(3,5), 3);
}
test_ival();
module test_xval() {
assert_equal(str(xval(function (a) a)), "function(a, b) func(b)");
assert_equal(xval(function (a) a)(3,5), 5);
}
test_xval();
module _test_fn1arg(dafunc,tests) {
assert_equal(str(dafunc()), "function(x) func(x)");
assert_equal(str(dafunc(3)), "function() func(a)");
for (test = tests) {
a = test[0];
r = test[1];
assert_equal(dafunc(a)(), r);
assert_equal(dafunc()(a), r);
}
}
module _test_fn2arg(dafunc,tests) {
assert_equal(str(dafunc()), "function(x, y) func(x, y)");
assert_equal(str(dafunc(3)), "function(x) func(a, x)");
assert_equal(str(dafunc(a=3)), "function(x) func(a, x)");
assert_equal(str(dafunc(b=3)), "function(x) func(x, b)");
assert_equal(str(dafunc(3,4)), "function() func(a, b)");
for (test = tests) {
a = test[0];
b = test[1];
r = test[2];
assert_equal(dafunc(a=a,b=b)(), r);
assert_equal(dafunc(a,b)(), r);
assert_equal(dafunc(a)(b), r);
assert_equal(dafunc(a=a)(b), r);
assert_equal(dafunc(b=b)(a), r);
assert_equal(dafunc()(a,b), r);
}
}
module test_f_cmp() {
_test_fn2arg(
function (a,b) f_cmp(a,b),
[[4,3,1],[3,3,0],[3,4,-1]]
);
}
test_f_cmp();
module test_f_gt() {
_test_fn2arg(
function (a,b) f_gt(a,b),
[[4,3,true],[3,3,false],[3,4,false]]
);
}
test_f_gt();
module test_f_gte() {
_test_fn2arg(
function (a,b) f_gte(a,b),
[[4,3,true],[3,3,true],[3,4,false]]
);
}
test_f_gte();
module test_f_lt() {
_test_fn2arg(
function (a,b) f_lt(a,b),
[[4,3,false],[3,3,false],[3,4,true]]
);
}
test_f_lt();
module test_f_lte() {
_test_fn2arg(
function (a,b) f_lte(a,b),
[[4,3,false],[3,3,true],[3,4,true]]
);
}
test_f_lte();
module test_f_eq() {
_test_fn2arg(
function (a,b) f_eq(a,b),
[[4,3,false],[3,3,true],[3,4,false]]
);
}
test_f_eq();
module test_f_neq() {
_test_fn2arg(
function (a,b) f_neq(a,b),
[[4,3,true],[3,3,false],[3,4,true]]
);
}
test_f_neq();
module test_f_approx() {
_test_fn2arg(
function (a,b) f_approx(a,b),
[[4,3,false],[3,3,true],[3,4,false],[1/3,0.33333333333333333333333333,true]]
);
}
test_f_approx();
module test_f_napprox() {
_test_fn2arg(
function (a,b) f_napprox(a,b),
[[4,3,true],[3,3,false],[3,4,true],[1/3,0.33333333333333333333333333,false]]
);
}
test_f_napprox();
module test_f_or() {
_test_fn2arg(
function (a,b) f_or(a,b),
[
[false, false, false],
[true , false, true ],
[false, true , true ],
[true , true , true ]
]
);
}
test_f_or();
module test_f_and() {
_test_fn2arg(
function (a,b) f_and(a,b),
[
[false, false, false],
[true , false, false],
[false, true , false],
[true , true , true ]
]
);
}
test_f_and();
module test_f_nor() {
_test_fn2arg(
function (a,b) f_nor(a,b),
[
[false, false, true ],
[true , false, false],
[false, true , false],
[true , true , false]
]
);
}
test_f_nor();
module test_f_nand() {
_test_fn2arg(
function (a,b) f_nand(a,b),
[
[false, false, true ],
[true , false, true ],
[false, true , true ],
[true , true , false]
]
);
}
test_f_nand();
module test_f_xor() {
_test_fn2arg(
function (a,b) f_xor(a,b),
[
[false, false, false],
[true , false, true ],
[false, true , true ],
[true , true , false]
]
);
}
test_f_xor();
module test_f_not() {
_test_fn1arg(
function (a) f_not(a),
[
[true, false],
[false, true ],
]
);
}
test_f_not();
module test_f_even() {
_test_fn1arg(
function (a) f_even(a),
[
[-3, false],
[-2, true ],
[-1, false],
[ 0, true ],
[ 1, false],
[ 2, true ],
[ 3, false],
]
);
}
test_f_even();
module test_f_odd() {
_test_fn1arg(
function (a) f_odd(a),
[
[-3, true ],
[-2, false],
[-1, true ],
[ 0, false],
[ 1, true ],
[ 2, false],
[ 3, true ],
]
);
}
test_f_odd();
module test_f_add() {
_test_fn2arg(
function (a,b) f_add(a,b),
[[4,3,7],[3,3,6],[3,2,5],[-3,-5,-8],[-3,7,4],[3,-7,-4]]
);
}
test_f_add();
module test_f_sub() {
_test_fn2arg(
function (a,b) f_sub(a,b),
[[4,3,1],[3,3,0],[3,4,-1],[-3,-5,2],[-3,6,-9],[3,-6,9]]
);
}
test_f_sub();
module test_f_mul() {
_test_fn2arg(
function (a,b) f_mul(a,b),
[[4,3,12],[3,3,9],[3,2,6],[-3,-5,15],[-3,7,-21],[3,-7,-21]]
);
}
test_f_mul();
module test_f_div() {
_test_fn2arg(
function (a,b) f_div(a,b),
[[21,3,7],[21,7,3],[16,4,4],[-16,4,-4],[-16,-4,4]]
);
}
test_f_div();
module test_f_mod() {
_test_fn2arg(
function (a,b) f_mod(a,b),
[[21,3,0],[22,7,1],[23,3,2],[24,3,0]]
);
}
test_f_mod();
module test_f_pow() {
_test_fn2arg(
function (a,b) f_pow(a,b),
[[2,3,8],[3,3,27],[4,2,16],[2,-3,1/8]]
);
}
test_f_pow();
// vim: expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap