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|
open QCheck
module Shrink = struct
let trace_false shrinker x =
let res = ref [] in
shrinker x (fun x -> res := x::!res);
List.rev !res
let trace_true shrinker x =
let rec loop x =
match Iter.find (fun _ -> true) (shrinker x) with
| None -> []
| Some y -> y::loop y in
loop x
let alco_check typ func msg_suffix (msg,input,expected) =
Alcotest.(check (list typ)) (msg ^ " - " ^ msg_suffix) expected (func input)
let test_bool () =
List.iter (alco_check Alcotest.bool (trace_false Shrink.bool) "on repeated failure")
[ ("bool true", true, [false]);
("bool false", false, []) ];
List.iter (alco_check Alcotest.bool (trace_true Shrink.bool) "on repeated success")
[ ("bool true", true, [false]);
("bool false", false, []) ]
let test_int () =
List.iter (alco_check Alcotest.int (trace_false Shrink.int) "on repeated failure")
[ ("int 100", 100, [50; 75; 88; 94; 97; 99]);
("int 1000", 1000, [500; 750; 875; 938; 969; 985; 993; 997; 999]);
("int (-26)", -26, [-13; -20; -23; -25]) ];
List.iter (alco_check Alcotest.int (trace_true Shrink.int) "on repeated success")
[ ("int 100", 100, [50; 25; 13; 7; 4; 2; 1; 0]);
("int 1000", 1000, [500; 250; 125; 63; 32; 16; 8; 4; 2; 1; 0]);
("int (-26)", -26, [-13; -7; -4; -2; -1; 0]) ]
let test_int32 () =
List.iter (alco_check Alcotest.int32 (trace_false Shrink.int32) "on repeated failure")
[ ("int 100", 100l, [50l; 75l; 88l; 94l; 97l; 99l]);
("int 1000", 1000l, [500l; 750l; 875l; 938l; 969l; 985l; 993l; 997l; 999l]);
("int (-26)", -26l, [-13l; -20l; -23l; -25l]) ];
List.iter (alco_check Alcotest.int32 (trace_true Shrink.int32) "on repeated success")
[ ("int 100", 100l, [50l; 25l; 13l; 7l; 4l; 2l; 1l; 0l]);
("int 1000", 1000l, [500l; 250l; 125l; 63l; 32l; 16l; 8l; 4l; 2l; 1l; 0l]);
("int (-26)", -26l, [-13l; -7l; -4l; -2l; -1l; 0l]) ]
let test_int64 () =
List.iter (alco_check Alcotest.int64 (trace_false Shrink.int64) "on repeated failure")
[ ("int 100", 100L, [50L; 75L; 88L; 94L; 97L; 99L]);
("int 1000", 1000L, [500L; 750L; 875L; 938L; 969L; 985L; 993L; 997L; 999L]);
("int (-26)", -26L, [-13L; -20L; -23L; -25L]) ];
List.iter (alco_check Alcotest.int64 (trace_true Shrink.int64) "on repeated success")
[ ("int 100", 100L, [50L; 25L; 13L; 7L; 4L; 2L; 1L; 0L]);
("int 1000", 1000L, [500L; 250L; 125L; 63L; 32L; 16L; 8L; 4L; 2L; 1L; 0L]);
("int (-26)", -26L, [-13L; -7L; -4L; -2L; -1L; 0L]) ]
let float_equal x y =
(Float.is_nan x && Float.is_nan y)
|| x = y
|| abs_float (x -. y) < Float.epsilon
||
(let rel_error =
if abs_float x > abs_float y then abs_float ((x -. y) /. x) else abs_float ((x -. y) /. y) in
rel_error <= 1e-5) (* allow 0.00001% error *)
let alcotest_float = Alcotest.testable Fmt.float float_equal
let test_float () =
List.iter (alco_check (alcotest_float ) (trace_false Shrink.float) "on repeated failure")
[ ("float max_float", max_float, [1.79769e+154; 1.79769e+231; 1.79769e+270; 1.79769e+289;
1.79769e+299; 1.79769e+304; 1.79769e+306; 1.79769e+307;
9e+307; 1.3e+308; 1.5e+308; 1.6e+308; 8.99e+307; 1.348e+308;
1.573e+308; 1.685e+308; 1.741e+308; 1.769e+308; 1.783e+308;
1.79e+308; 1.794e+308; 1.796e+308; 8.9885e+307; 1.34827e+308;
1.57298e+308; 1.68534e+308; 1.74152e+308; 1.76961e+308;
1.78365e+308; 1.79067e+308; 1.79418e+308; 1.79594e+308;
1.79682e+308; 1.79726e+308; 1.79748e+308]);
("float min_float", min_float, [2.22507e-154; 2.22507e-231; 2.22507e-270; 2.22507e-289;
2.22507e-299; 2.22507e-304; 2.22507e-306; 2.22507e-307;
1.22507e-308; 1.1e-308; 1.7e-308; 2e-308; 2.1e-308;
1.113e-308; 1.669e-308; 1.947e-308; 2.086e-308; 2.156e-308;
2.191e-308; 2.208e-308; 2.217e-308; 2.221e-308; 2.223e-308;
2.224e-308; 1.11254e-308; 1.66881e-308; 1.94694e-308;
2.08601e-308; 2.15554e-308; 2.19031e-308; 2.20769e-308;
2.21638e-308; 2.22073e-308; 2.2229e-308; 2.22399e-308;
2.22453e-308; 2.2248e-308]);
("float 1e100", 1e100, [1e+50; 1e+75; 1e+88; 1e+94; 1e+97; 1e+99]);
("float 3.3333e+33", 3.3333e+33, [3.3333e+17; 3.3333e+25; 3.3333e+29; 3.3333e+31; 3.3333e+32;
1.7e+33; 2.5e+33; 2.9e+33; 3.1e+33; 3.2e+33; 1.667e+33;
2.5e+33; 2.917e+33; 3.125e+33; 3.229e+33; 3.281e+33;
3.307e+33; 3.32e+33; 3.327e+33; 3.33e+33; 3.332e+33;
3.3329e+33; 2.3333e+33]);
("float 1e10", 1e10, [100000.; 1e+08; 1e+09]);
("float 5e6", 5e6, [5000.; 500000.; 2.5e+06; 3.8e+06; 4.4e+06; 4.7e+06; 4.9e+06;
3e+06; 4e+06]);
("float 1e6", 1e6, [1000.; 100000.]);
("float 1e5", 1e5, [1000.; 10000.]);
("float 1e4", 1e4, [100.; 1000.]);
("float 3.3333e+3", 3.3333e+3, [333.33; 1700.; 2500.; 2900.; 3100.; 3200.; 1667.; 2500.; 2917.;
3125.; 3229.; 3281.; 3307.; 3320.; 3327.; 3330.; 3332.; 3332.9;
2333.3]);
("float 100.", 100., [10.]);
("float 10.00001", 10.00001, [1.; 5.; 8.; 9.]);
("float 9.00001", 9.00001, [4.5; 6.8; 7.9; 8.5; 8.8; 8.9; 4.50001; 6.75001; 7.87501;
8.43751; 8.71876; 8.85939; 8.9297; 8.96486; 8.98244; 8.99123;
8.99562; 8.99782; 8.99892; 5.00001; 7.00001; 8.00001]);
("float pi", Float.pi, [3.; 1.6; 2.4; 2.8; 3.; 1.571; 2.356; 2.749; 2.945; 3.043;
3.092; 3.117; 3.129; 3.135; 3.138; 3.14; 1.5708; 2.3562;
2.7489; 2.94525; 3.04342; 3.09251; 3.11705; 3.12932; 3.13546;
3.13853; 3.14006; 3.14083; 3.14121; 2.14159]);
("float 1.", 1., []);
("float 0.1", 0.1, [1.]);
("float 3.3333e-3", 3.3333e-3, [0.033333; 0.0017; 0.0025; 0.0029; 0.0031; 0.0032; 0.001667;
0.0025; 0.002917; 0.003125; 0.003229; 0.003281; 0.003307;
0.00332; 0.003327; 0.00333; 0.003332; 0.0033329; 0.0023333]);
("float 1e-4", 1e-4, [0.01; 0.001]);
("float 1e-5", 1e-5, [0.001; 0.0001]);
("float 1e-6", 1e-6, [0.001; 1e-05]);
("float 1e-10", 1e-10, [1e-05; 1e-08; 1e-09]);
("float 3.3333e-33", 3.3333e-33, [3.3333e-17; 3.3333e-25; 3.3333e-29; 3.3333e-31; 3.3333e-32;
2.3333e-33; 1.7e-33; 2.5e-33; 2.9e-33; 3.1e-33; 3.2e-33;
1.667e-33; 2.5e-33; 2.917e-33; 3.125e-33; 3.229e-33;
3.281e-33; 3.307e-33; 3.32e-33; 3.327e-33; 3.33e-33;
3.332e-33; 3.3329e-33]);
("float 0.", 0., []);
("float -0.", -0., []);
("float -3.3333e-33", -3.3333e-33, [3.3333e-33; -3.3333e-17; -3.3333e-25; -3.3333e-29;
-3.3333e-31; -3.3333e-32; -2.3333e-33; -1.7e-33; -2.5e-33;
-2.9e-33; -3.1e-33; -3.2e-33; -1.667e-33; -2.5e-33;
-2.917e-33; -3.125e-33; -3.229e-33; -3.281e-33; -3.307e-33;
-3.32e-33; -3.327e-33; -3.33e-33; -3.332e-33; -3.3329e-33]);
("float -1e-10", -1e-10, [1e-10; -1e-05; -1e-08; -1e-09]);
("float -1e-6", -1e-6, [1e-06; -0.001; -1e-05]);
("float -1e-5", -1e-5, [1e-05; -0.001; -0.0001]);
("float -1e-4", -1e-4, [0.0001; -0.01; -0.001]);
("float -3.3333e+3", -3.3333e+3, [3333.3; -333.33; -1700.; -2500.; -2900.; -3100.; -3200.; -1667.;
-2500.; -2917.; -3125.; -3229.; -3281.; -3307.; -3320.; -3327.;
-3330.; -3332.; -3332.9; -2333.3]);
("float -1e10", -1e10, [1e+10; -100000.; -1e+08; -1e+09]);
("float -3.3333e+33", -3.3333e+33, [3.3333e+33; -3.3333e+17; -3.3333e+25; -3.3333e+29;
-3.3333e+31; -3.3333e+32; -1.7e+33; -2.5e+33; -2.9e+33;
-3.1e+33; -3.2e+33; -1.667e+33; -2.5e+33; -2.917e+33;
-3.125e+33; -3.229e+33; -3.281e+33; -3.307e+33; -3.32e+33;
-3.327e+33; -3.33e+33; -3.332e+33; -3.3329e+33; -2.3333e+33]);
("float infinity", infinity, []);
("float neg_infinity", neg_infinity, [infinity]);
("float nan", nan, []);
];
List.iter (alco_check alcotest_float (trace_true Shrink.float) "on repeated success")
[ ("float max_float", max_float, [1.79769e+154; 1.79769e+77; 1.79769e+39; 1.79769e+20;
1.79769e+10; 179769.; 1797.69; 1797.; 179.7; 179.;
17.9; 17.; 1.7; 1.]);
("float min_float", min_float, [2.22507e-154; 2.22507e-77; 2.22507e-39; 2.22507e-20;
2.22507e-10; 2.22507e-05; 0.00222507; 0.0222507; 0.222507;
2.22507; 2.; 1.]);
("float 1e100", 1e100, [1e+50; 1e+25; 1e+13; 1e+07; 10000.; 100.; 10.; 1.]);
("float 3.3333e+33", 3.3333e+33, [3.3333e+17; 3.3333e+09; 333330.; 3333.3; 333.33; 333.;
33.3; 33.; 3.3; 3.; 2.; 1.]);
("float 1e10", 1e10, [100000.; 1000.; 100.; 10.; 1.]);
("float 5e6", 5e6, [5000.; 500.; 50.; 5.; 3.; 2.; 1.]);
("float 1e6", 1e6, [1000.; 100.; 10.; 1.]);
("float 1e5", 1e5, [1000.; 100.; 10.; 1.]);
("float 1e4", 1e4, [100.; 10.; 1.]);
("float 3.3333e+3", 3.3333e+3, [333.33; 333.; 33.3; 33.; 3.3; 3.; 2.; 1.]);
("float 100", 100., [10.; 1.]);
("float 10.00001", 10.00001, [1.; 0.5; 5.; 3.; 2.; 1.]);
("float 9.00001", 9.00001, [4.5; 4.; 2.; 1.]);
("float pi", Float.pi, [3.; 2.; 1.]);
("float 1.", 1., []);
("float 0.1", 0.1, [1.]);
("float 3.3333e-3", 3.3333e-3, [0.033333; 0.33333; 3.3333; 3.; 2.; 1.]);
("float 1e-4", 1e-4, [0.01; 0.1; 1.]);
("float 1e-5", 1e-5, [0.001; 0.01; 0.1; 1.]);
("float 1e-6", 1e-6, [0.001; 0.01; 0.1; 1.]);
("float 1e-10", 1e-10, [1e-05; 0.001; 0.01; 0.1; 1.]);
("float 3.3333e-33", 3.3333e-33, [3.3333e-17; 3.3333e-09; 3.3333e-05; 0.0033333; 0.033333;
0.33333; 3.3333; 3.; 2.; 1.]);
("float 0.", 0., []);
("float -0.", -0., []);
("float -3.3333e-33", -3.3333e-33, [3.3333e-33; 3.3333e-17; 3.3333e-09; 3.3333e-05; 0.0033333;
0.033333; 0.33333; 3.3333; 3.; 2.; 1.]);
("float -1e-10", -1e-10, [1e-10; 1e-05; 0.001; 0.01; 0.1; 1.]);
("float -1e-6", -1e-6, [1e-06; 0.001; 0.01; 0.1; 1.]);
("float -1e-5", -1e-5, [1e-05; 0.001; 0.01; 0.1; 1.]);
("float -1e-4", -1e-4, [0.0001; 0.01; 0.1; 1.]);
("float -3.3333e+3", -3.3333e+3, [3333.3; 333.33; 333.; 33.3; 33.; 3.3; 3.; 2.; 1.]);
("float -1e10", -1e10, [1e+10; 100000.; 1000.; 100.; 10.; 1.]);
("float -3.3333e+33", -3.3333e+33, [3.3333e+33; 3.3333e+17; 3.3333e+09; 333330.; 3333.3; 333.33;
333.; 33.3; 33.; 3.3; 3.; 2.; 1.]);
("float infinity", infinity, []);
("float neg_infinity", neg_infinity, [infinity]);
("float nan", nan, []);
]
let test_float_bound () =
List.iter (fun (name,bound,arg,res) -> alco_check alcotest_float (trace_false (Shrink.float_bound bound)) "on repeated failure" (name,arg,res))
[ ("float_bound max_float max_float", max_float, max_float, [1.79769e+154; 1.79769e+231; 1.79769e+270; 1.79769e+289;
1.79769e+299; 1.79769e+304; 1.79769e+306; 1.79769e+307;
9e+307; 1.3e+308; 1.5e+308; 1.6e+308; 8.99e+307; 1.348e+308;
1.573e+308; 1.685e+308; 1.741e+308; 1.769e+308; 1.783e+308;
1.79e+308; 1.794e+308; 1.796e+308; 8.9885e+307; 1.34827e+308;
1.57298e+308; 1.68534e+308; 1.74152e+308; 1.76961e+308;
1.78365e+308; 1.79067e+308; 1.79418e+308; 1.79594e+308;
1.79682e+308; 1.79726e+308; 1.79748e+308]);
("float_bound max_float pi", max_float, Float.pi, [3.; 1.1; 2.1; 2.6; 2.9; 3.; 1.071; 2.106; 2.624; 2.883;
3.012; 3.077; 3.109; 3.125; 3.133; 3.137; 3.139; 3.14;
1.0708; 2.1062; 2.6239; 2.88275; 3.01217; 3.07688; 3.10924;
3.12542; 3.13351; 3.13755; 3.13957; 3.14058; 3.14109;
1.14159; 2.14159]);
("float_bound max_float 1.", max_float, 1., [0.]);
("float_bound max_float 0.", max_float, 0., []);
("float_bound 1e6 1e6", 1e6, 1e6, [999.001; 99999.1; 499999.; 799999.; 899999.]);
("float_bound 1e6 10.00001", 1e6, 10.00001, [0.100001; 5.; 8.; 9.]);
("float_bound 1e6 9.00001", 1e6, 9.00001, [1e-06; 4.; 7.; 8.]);
("float_bound 1e6 3.00003", 1e6, 3.00003, [1.; 2.; 2.5; 2.8; 2.9; 1.00002; 2.00003; 2.50003; 2.75003;
2.87503; 2.93753; 2.96878; 2.98441; 2.99222; 2.99613;
2.99808; 2.99906; 2.99955; 1.00003; 2.00003]);
("float_bound 1e6 1.00001", 1e6, 1.00001, [0.; 0.5; 0.8; 0.9; 1e-05; 0.50001; 0.75001; 0.87501; 0.93751;
0.96876; 0.98439; 0.9922; 0.99611; 0.99806; 0.99904; 0.99953;
0.99977; 1e-05]);
("float_bound 10. 10.", 10., 10., [0.1; 5.; 8.; 9.]);
("float_bound 1. 1.", 1., 1., [0.]);
("float_bound 1. 0.5", 1., 0.5, [0.; 0.2; 0.4]);
("float_bound 1. 1e-3", 1., 1e-3, [0.]);
("float_bound 1. 1e-6", 1., 1e-6, []);
("float_bound 1. min_float", 1., min_float, []);
("float_bound 0. 0.", 0., 0., []);
("float_bound 1. -.min_float", 1., -.min_float, []);
("float_bound -1. -1e-6", -1., -1e-6, []);
("float_bound -1. -1e-3", -1., -1e-3, [0.]);
("float_bound -1. -0.5", -1., -0.5, [0.; -0.2; -0.4]);
("float_bound -1. -1.", -1., -1., [0.]);
("float_bound -10. -10.", -10., -10., [-0.1; -5.; -8.; -9.]);
("float_bound -1e6 -1.00001", -1e6, -1.00001, [0.; -0.5; -0.8; -0.9; -1e-05; -0.50001; -0.75001; -0.87501;
-0.93751; -0.96876; -0.98439; -0.9922; -0.99611; -0.99806;
-0.99904; -0.99953; -0.99977; -1e-05]);
("float_bound -1e6 -3.00003", -1e6, -3.00003, [-1.; -2.; -2.5; -2.8; -2.9; -1.00002; -2.00003; -2.50003;
-2.75003; -2.87503; -2.93753; -2.96878; -2.98441; -2.99222;
-2.99613; -2.99808; -2.99906; -2.99955; -1.00003; -2.00003]);
("float_bound -1e6 -9.00001", -1e6, -9.00001, [-1e-06; -4.; -7.; -8.]);
("float_bound -1e6 -10.00001", -1e6, -10.00001, [-0.100001; -5.; -8.; -9.]);
("float_bound -1e6 -1e6", -1e6, -1e6, [-999.001; -99999.1; -499999.; -799999.; -899999.]);
("float_bound -.max_float -1.", -.max_float, -1., [0.]);
("float_bound -.max_float -.pi", -.max_float, -.Float.pi, [-3.; -1.1; -2.1; -2.6; -2.9; -3.; -1.071; -2.106; -2.624;
-2.883; -3.012; -3.077; -3.109; -3.125; -3.133; -3.137;
-3.139; -3.14; -1.0708; -2.1062; -2.6239; -2.88275; -3.01217;
-3.07688; -3.10924; -3.12542; -3.13351; -3.13755; -3.13957;
-3.14058; -3.14109; -1.14159; -2.14159]);
("float_bound -.max_float -.max_float", -.max_float, -.max_float, [-1.79769e+154; -1.79769e+231; -1.79769e+270; -1.79769e+289;
-1.79769e+299; -1.79769e+304; -1.79769e+306; -1.79769e+307;
-9e+307; -1.3e+308; -1.5e+308; -1.6e+308; -8.99e+307;
-1.348e+308; -1.573e+308; -1.685e+308; -1.741e+308;
-1.769e+308; -1.783e+308; -1.79e+308; -1.794e+308;
-1.796e+308; -8.9885e+307; -1.34827e+308; -1.57298e+308;
-1.68534e+308; -1.74152e+308; -1.76961e+308; -1.78365e+308;
-1.79067e+308; -1.79418e+308; -1.79594e+308; -1.79682e+308;
-1.79726e+308; -1.79748e+308]);
];
List.iter (fun (name,bound,arg,res) -> alco_check alcotest_float (trace_true (Shrink.float_bound bound)) "on repeated success" (name,arg,res))
[ ("float_bound max_float max_float", max_float, max_float, [1.79769e+154; 1.79769e+77; 1.79769e+39; 1.79769e+20;
1.79769e+10; 179768.; 1796.69; 1796.; 178.7; 178.; 16.9;
16.; 0.7; 0.]);
("float_bound max_float pi", max_float, Float.pi, [3.; 1.; 0.]);
("float_bound max_float 1.", max_float, 1. , [0.]);
("float_bound max_float 0.", max_float, 0., []);
("float_bound 1e6 1e6", 1e6, 1e6, [999.001; 99.0001; 9.00001; 1e-06]);
("float_bound 1e6 10.00001", 1e6, 10.00001, [0.100001; 0.]);
("float_bound 1e6 9.00001", 1e6, 9.00001, [1e-06]);
("float_bound 1e6 3.00003", 1e6, 3.00003, [1.; 0.]);
("float_bound 1e6 1.00001", 1e6, 1.00001, [0.]);
("float_bound 10. 10.", 10., 10., [0.1; 0.]);
("float_bound 1. 1.", 1., 1., [0.]);
("float_bound 1. 0.5", 1., 0.5, [0.]);
("float_bound 1. 1e-3", 1., 1e-3, [0.]);
("float_bound 1. 1e-6", 1., 1e-6, []);
("float_bound 1. min_float", 1., min_float, []);
("float_bound 0. 0.", 0., 0., []);
("float_bound 1. -.min_float", 1., -.min_float, []);
("float_bound -1. -1e-6", -1., -1e-6, []);
("float_bound -1. -1e-3", -1., -1e-3, [0.]);
("float_bound -1. -0.5", -1., -0.5, [0.]);
("float_bound -1. -1.", -1., -1., [0.]);
("float_bound -10. -10.", -10., -10., [-0.1; 0.]);
("float_bound -1e6 -1.00001", -1e6, -1.00001, [0.]);
("float_bound -1e6 -3.00003", -1e6, -3.00003, [-1.; 0.]);
("float_bound -1e6 -9.00001", -1e6, -9.00001, [-1e-06]);
("float_bound -1e6 -10.00001", -1e6, -10.00001, [-0.100001; 0.]);
("float_bound -1e6 -1e6", -1e6, -1e6, [-999.001; -99.0001; -9.00001; -1e-06]);
("float_bound -.max_float -1.", -.max_float, -1., [0.]);
("float_bound -.max_float -.pi", -.max_float, -.Float.pi, [-3.; -1.; 0.]);
("float_bound -.max_float -.max_float", -.max_float, -.max_float, [-1.79769e+154; -1.79769e+77; -1.79769e+39; -1.79769e+20;
-1.79769e+10; -179768.; -1796.69; -1796.; -178.7; -178.;
-16.9; -16.; -0.7; 0.]);
]
let test_float_range () =
List.iter
(fun (name,low,high,arg,res) -> alco_check alcotest_float (trace_false (Shrink.float_range low high)) "on repeated failure" (name,arg,res))
[ (* positive ranges *)
("float_range 0. max_float max_float", 0., max_float, max_float, [1.79769e+154; 1.79769e+231; 1.79769e+270; 1.79769e+289;
1.79769e+299; 1.79769e+304; 1.79769e+306; 1.79769e+307;
9e+307; 1.3e+308; 1.5e+308; 1.6e+308; 8.99e+307; 1.348e+308;
1.573e+308; 1.685e+308; 1.741e+308; 1.769e+308; 1.783e+308;
1.79e+308; 1.794e+308; 1.796e+308; 8.9885e+307; 1.34827e+308;
1.57298e+308; 1.68534e+308; 1.74152e+308; 1.76961e+308;
1.78365e+308; 1.79067e+308; 1.79418e+308; 1.79594e+308;
1.79682e+308; 1.79726e+308; 1.79748e+308]);
("float_range 0. max_float 1e6", 0., max_float, 1e6, [999.001; 99999.1; 499999.; 799999.; 899999.]);
("float_range 0. max_float 10.", 0., max_float, 10., [0.1; 5.; 8.; 9.]);
("float_range 0. max_float 9.000001", 0., max_float, 9.000001, [0.]);
("float_range 0. max_float 1.", 0., max_float, 1., [0.]);
("float_range 0. max_float min_float", 0., max_float, min_float, []);
("float_range 0. max_float 0.", 0., max_float, 0., []);
("float_range 10. 100. 100.", 10., 100., 100., [18.1; 55.; 78.; 89.; 95.; 98.; 99.; 60.; 80.; 90.]);
("float_range 10. 100. 50.", 10., 100., 50., [13.1; 30.; 40.; 45.; 48.; 49.; 30.; 40.]);
("float_range 10. 100. 11.000001", 10., 100., 11.000001, [10.; 10.5; 10.8; 10.9; 10.]);
("float_range 10. 100. 10.", 10., 100., 10., []);
(* ranges crossing 0. *)
("float_range -10. 10. 10.", -10., 10., 10., [0.1; 5.; 8.; 9.]);
("float_range -10. 10. 1.", -10., 10., 1., [0.]);
("float_range -10. 10. 0.", -10., 10., 0., []);
("float_range -10. 10. -10.", -10., 10., -10., [8.; -6.; -8.; -9.]);
("float_range -10. 10. -1.", -10., 10., -1., []); (*triggers [float 0.] above*)
(* negative ranges *)
("float_range -100. -10. -10.", -100., -10., -10., []);
("float_range -100. -10. -50.", -100., -10., -50., [-13.1; -30.; -40.; -45.; -48.; -49.; -30.; -40.]);
("float_range -100. -10. -100.", -100., -10., -100., [-18.1; -55.; -78.; -89.; -95.; -98.; -99.; -60.; -80.; -90.]);
("float_range -.max_float 0. -1.", -.max_float, 0., -1., [0.]);
("float_range -.max_float 0. -10.", -.max_float, 0., -10., [-0.1; -5.; -8.; -9.]);
("float_range -.max_float 0. -1e6", -.max_float, 0., -1e6, [-999.001; -99999.1; -499999.; -799999.; -899999.]);
("float_range -.max_float 0. -.max_float", -.max_float, 0., -.max_float, [-1.79769e+154; -1.79769e+231; -1.79769e+270; -1.79769e+289;
-1.79769e+299; -1.79769e+304; -1.79769e+306; -1.79769e+307;
-9e+307; -1.3e+308; -1.5e+308; -1.6e+308; -8.99e+307;
-1.348e+308; -1.573e+308; -1.685e+308; -1.741e+308;
-1.769e+308; -1.783e+308; -1.79e+308; -1.794e+308;
-1.796e+308; -8.9885e+307; -1.34827e+308; -1.57298e+308;
-1.68534e+308; -1.74152e+308; -1.76961e+308; -1.78365e+308;
-1.79067e+308; -1.79418e+308; -1.79594e+308; -1.79682e+308;
-1.79726e+308; -1.79748e+308]);
];
List.iter
(fun (name,low,high,arg,res) -> alco_check alcotest_float (trace_true (Shrink.float_range low high)) "on repeated success" (name,arg,res))
[ (* positive ranges *)
("float_range 0. max_float max_float", 0., max_float, max_float, [1.79769e+154; 1.79769e+77; 1.79769e+39; 1.79769e+20;
1.79769e+10; 179768.; 1796.69; 1796.; 178.7; 178.; 16.9;
16.; 0.7; 0.]);
("float_range 0. max_float 1e6", 0., max_float, 1e6, [999.001; 99.0001; 9.00001; 1e-06]);
("float_range 0. max_float 10.", 0., max_float, 10., [0.1; 0.]);
("float_range 0. max_float 9.000001", 0., max_float, 9.000001, [0.]);
("float_range 0. max_float 1.", 0., max_float, 1., [0.]);
("float_range 0. max_float min_float", 0., max_float, min_float, []);
("float_range 0. max_float 0.", 0., max_float, 0., []);
("float_range 10. 100. 100.", 10., 100., 100., [18.1; 18.; 14.; 12.; 11.; 10.]);
("float_range 10. 100. 50.", 10., 100., 50., [13.1; 13.; 11.; 10.]);
("float_range 10. 100. 11.000001", 10., 100., 11.000001, [10.]);
("float_range 10. 100. 10.", 10., 100., 10., []);
(* ranges crossing 0. *)
("float_range -10. 10. 10.", -10., 10., 10., [0.1; 0.]);
("float_range -10. 10. 1.", -10., 10., 1., [0.]);
("float_range -10. 10. 0.", -10., 10., 0., []);
("float_range -10. 10. -10.", -10., 10., -10., [8.; 4.; 2.; 1.; 0.]);
("float_range -10. 10. -1.", -10., 10., -1., []); (*triggers [float 0.] above*)
(* negative ranges *)
("float_range -100. -10. -10.", -100., -10., -10., []);
("float_range -100. -10. -50.", -100., -10., -50., [-13.1; -13.; -11.; -10.]);
("float_range -100. -10. -100.", -100., -10., -100., [-18.1; -18.; -14.; -12.; -11.; -10.]);
("float_range -.max_float 0. -1.", -.max_float, 0., -1., [0.]);
("float_range -.max_float 0. -10.", -.max_float, 0., -10., [-0.1; 0.]);
("float_range -.max_float 0. -1e6", -.max_float, 0., -1e6, [-999.001; -99.0001; -9.00001; -1e-06]);
("float_range -.max_float 0. -.max_float", -.max_float, 0., -.max_float, [-1.79769e+154; -1.79769e+77; -1.79769e+39; -1.79769e+20;
-1.79769e+10; -179768.; -1796.69; -1796.; -178.7; -178.;
-16.9; -16.; -0.7; 0.]);
]
let test_char () =
List.iter (alco_check Alcotest.char (trace_false Shrink.char) "on repeated failure")
[ ("char 'a'", 'a', []);
("char 'z'", 'z', ['n'; 't'; 'w'; 'y']);
("char 'A'", 'A', ['Q'; 'I'; 'E'; 'C'; 'B']);
("char '~'", '~', ['p'; 'w'; '{'; '}']) ];
List.iter (alco_check Alcotest.char (trace_true Shrink.char) "on repeated success")
[ ("char 'a'", 'a', []);
("char 'z'", 'z', ['n'; 'h'; 'e'; 'c'; 'b'; 'a']);
("char 'A'", 'A', ['Q'; 'Y'; ']'; '_'; '`'; 'a']);
("char '~'", '~', ['p'; 'i'; 'e'; 'c'; 'b'; 'a']); ]
let test_char_numeral () =
List.iter (alco_check Alcotest.char (trace_false Shrink.char_numeral) "on repeated failure")
[ ("char '0'", '0', []);
("char '9'", '9', ['5'; '7'; '8']) ];
List.iter (alco_check Alcotest.char (trace_true Shrink.char_numeral) "on repeated success")
[ ("char '0'", '0', []);
("char '9'", '9', ['5'; '3'; '2'; '1'; '0']); ]
let test_char_printable () =
List.iter (alco_check Alcotest.char (trace_false Shrink.char_printable) "on repeated failure")
[ ("char 'A'", 'A', ['Q'; 'I'; 'E'; 'C'; 'B']);
("char 'a'", 'a', []);
("char ' '", ' ', ['@'; '0'; '('; '$'; '"'; '!']);
("char '~'", '~', ['p'; 'w'; '{'; '}']);
("char '\\n'", '\n', ['p'; 'w'; '{'; '}']); ];
List.iter (alco_check Alcotest.char (trace_true Shrink.char_printable) "on repeated success")
[ ("char 'A'", 'A', ['Q'; 'Y'; ']'; '_'; '`'; 'a']);
("char 'a'", 'a', []);
("char ' '", ' ', ['@'; 'P'; 'X'; '\\'; '^'; '_'; '`'; 'a']);
("char '~'", '~', ['p'; 'i'; 'e'; 'c'; 'b'; 'a']);
("char '\\n'", '\n', ['p'; 'i'; 'e'; 'c'; 'b'; 'a']); ]
let test_string () =
List.iter (alco_check Alcotest.string (trace_false Shrink.string) "on repeated failure")
[ ("string \"\"", "", []);
("string \"a\"", "a", [""]);
("string \"aa\"", "aa", [""; "a"]);
("string \"aaaa\"", "aaaa", ["aa"; "aa"; "aaa"]);
("string \"abcd\"", "abcd", ["ab"; "cd"; "acd"; "bcd"; "aacd"; "abbd"; "abcc"]);
("string \"E'*\"", "E'*", ["E'"; "*"; "E*"; "'*"; "S'*"; "L'*"; "H'*"; "F'*"; "ED*";
"E5*"; "E.*"; "E**"; "E(*"; "E'E"; "E'7"; "E'0"; "E'-"; "E'+"]);
("string \"vi5x92xgG\"", "vi5x92xgG", (* A less exhaustive string shrinker would be preferable *)
["vi5x9"; "vi52xgG"; "vix92xgG"; "5x92xgG";
"v5x92xgG"; "i5x92xgG"; "li5x92xgG"; "qi5x92xgG"; "ti5x92xgG"; "ui5x92xgG";
"ve5x92xgG"; "vg5x92xgG"; "vh5x92xgG";
"viKx92xgG"; "vi@x92xgG"; "vi:x92xgG"; "vi7x92xgG"; "vi6x92xgG";
"vi5m92xgG"; "vi5s92xgG"; "vi5v92xgG"; "vi5w92xgG";
"vi5xM2xgG"; "vi5xC2xgG"; "vi5x>2xgG"; "vi5x;2xgG"; "vi5x:2xgG";
"vi5x9IxgG"; "vi5x9=xgG"; "vi5x97xgG"; "vi5x94xgG"; "vi5x93xgG";
"vi5x92mgG"; "vi5x92sgG"; "vi5x92vgG"; "vi5x92wgG";
"vi5x92xdG"; "vi5x92xfG";
"vi5x92xgT"; "vi5x92xgM"; "vi5x92xgJ"; "vi5x92xgH"]);
("string \"~~~~\"", "~~~~", ["~~"; "~~"; "~~~"; "p~~~"; "w~~~"; "{~~~"; "}~~~"; "~p~~";
"~w~~"; "~{~~"; "~}~~"; "~~p~"; "~~w~"; "~~{~"; "~~}~";
"~~~p"; "~~~w"; "~~~{"; "~~~}"]); ];
List.iter (alco_check Alcotest.string (trace_true Shrink.string) "on repeated success")
[ ("string \"\"", "", []);
("string \"a\"", "a", [""]);
("string \"aa\"", "aa", [""]);
("string \"aaaa\"", "aaaa", ["aa"; ""]);
("string \"abcd\"", "abcd", ["ab"; ""]);
("string \"E'*\"", "E'*", ["E'"; ""]);
("string \"vi5x92xgG\"", "vi5x92xgG", ["vi5x9"; "vi5"; "vi"; ""]); ]
let test_int_list () =
List.iter (alco_check Alcotest.(list int) (trace_false (Shrink.list_spine)) "on repeated failure")
[ ("list int [0]", [0], [[]]);
("list int [0;1]", [0;1], [[]; [0]; [1]]);
("list int [0;1;2]", [0;1;2], [[0; 1]; [2]; [0; 2]; [1; 2]]);
("list int [0;1;2;3]", [0;1;2;3], [[0; 1]; [2; 3]; [0; 2; 3]; [1; 2; 3]]);
("list int [0;0]", [0;0], [[]; [0]]);
("list int [0;0;0]", [0;0;0], [[0; 0]; [0]; [0; 0]]);
("list int [0;0;0;0]", [0;0;0;0], [[0; 0]; [0; 0]; [0; 0; 0]]); ];
List.iter (alco_check Alcotest.(list int) (trace_true (Shrink.list_spine)) "on repeated success")
[ ("list int [0]", [0], [[]]);
("list int [0;1]", [0;1], [[]]);
("list int [0;1;2]", [0;1;2], [[0; 1]; []]);
("list int [0;1;2;3]", [0;1;2;3], [[0; 1]; []]);
("list int [0;0]", [0;0], [[]]);
("list int [0;0;0]", [0;0;0], [[0; 0]; []]);
("list int [0;0;0;0]", [0;0;0;0], [[0; 0]; []]); ]
let test_int32_list () = (* use int32 as a boxed type and List.map to force run-time allocations *)
List.iter (alco_check Alcotest.(list int32) (trace_false (Shrink.list_spine)) "on repeated failure")
[ ("list int32 [0l]", List.map Int32.of_int [0], [[]]);
("list int32 [0l;1l]", List.map Int32.of_int [0;1], [[]; [0l]; [1l]]);
("list int32 [0l;1l;2l]", List.map Int32.of_int [0;1;2], [[0l; 1l]; [2l]; [0l; 2l]; [1l; 2l]]);
("list int32 [0l;1l;2l;3l]", List.map Int32.of_int [0;1;2;3], [[0l; 1l]; [2l; 3l]; [0l; 2l; 3l]; [1l; 2l; 3l]]);
("list int32 [0l;0l]", List.map Int32.of_int [0;0], [[]; [0l]]);
("list int32 [0l;0l;0l]", List.map Int32.of_int [0;0;0], [[0l; 0l]; [0l]; [0l; 0l]]);
("list int32 [0l;0l;0l;0l]", List.map Int32.of_int [0;0;0;0], [[0l; 0l]; [0l; 0l]; [0l; 0l; 0l]]); ];
List.iter (alco_check Alcotest.(list int32) (trace_true (Shrink.list_spine)) "on repeated success")
[ ("list int [0l]", List.map Int32.of_int [0], [[]]);
("list int [0l;1l]", List.map Int32.of_int [0;1], [[]]);
("list int [0l;1l;2l]", List.map Int32.of_int [0;1;2], [[0l; 1l]; []]);
("list int [0l;1l;2l;3l]", List.map Int32.of_int [0;1;2;3], [[0l; 1l]; []]);
("list int [0l;0l]", List.map Int32.of_int [0;0], [[]]);
("list int [0l;0l;0l]", List.map Int32.of_int [0;0;0], [[0l; 0l]; []]);
("list int [0l;0l;0l;0l]", List.map Int32.of_int [0;0;0;0], [[0l; 0l]; []]); ]
let test_list_spine_compare () =
let run_test () = QCheck.Shrink.list_spine [pred;succ] ignore in
Alcotest.(check unit) "doesn't compare elements" () @@ run_test ()
let test_int_option () =
List.iter (alco_check Alcotest.(option int) (trace_false Shrink.(option int)) "on repeated failure")
[ ("option int Some 42", Some 42, [None; Some 21; Some 32; Some 37; Some 40; Some 41]);
("option int None", None, []) ];
List.iter (alco_check Alcotest.(option int) (trace_true Shrink.(option int)) "on repeated success")
[ ("option int Some 42", Some 42, [None]);
("option int None", None, []) ]
let test_int_string_result () =
List.iter (alco_check Alcotest.(result int string) (trace_false Shrink.(result int string)) "on repeated failure")
[ ("result int string Ok 55", Ok 55, [Ok 28; Ok 42; Ok 49; Ok 52; Ok 54]);
("result int string Error \"oops\"", Error "oops", [Error "oo"; Error "ps"; Error "ops"; Error "hops";
Error "lops"; Error "nops"; Error "ohps"; Error "olps";
Error "onps"; Error "oois"; Error "ooms"; Error "ooos";
Error "oopj"; Error "oopo"; Error "oopq"; Error "oopr"]) ];
List.iter (alco_check Alcotest.(result int string) (trace_true Shrink.(result int string)) "on repeated success")
[ ("result int string Ok 55", Ok 55, [Ok 28; Ok 14; Ok 7; Ok 4; Ok 2; Ok 1; Ok 0]);
("result int string Error \"oops\"", Error "oops", [Error "oo"; Error ""]) ]
let tests = ("Shrink", Alcotest.[
test_case "bool" `Quick test_bool;
test_case "int" `Quick test_int;
test_case "int32" `Quick test_int32;
test_case "int64" `Quick test_int64;
test_case "float" `Quick test_float;
test_case "float_bound" `Quick test_float_bound;
test_case "float_range" `Quick test_float_range;
test_case "char" `Quick test_char;
test_case "char_numeral" `Quick test_char_numeral;
test_case "char_printable" `Quick test_char_printable;
test_case "string" `Quick test_string;
test_case "int list" `Quick test_int_list;
test_case "int32 list" `Quick test_int32_list;
test_case "list_spine" `Quick test_list_spine_compare;
test_case "int option" `Quick test_int_option;
test_case "(int,string) result" `Quick test_int_string_result;
])
end
module Check_exn = struct
(* String.starts_with was introduced in 4.13.
Include the below to support pre-4.13 OCaml. *)
let string_starts_with ~prefix s =
let prefix_len = String.length prefix in
prefix_len <= String.length s
&& prefix = String.sub s 0 prefix_len
let check_exn = Test.check_exn
let test_pass_trivial () =
let run_test () = check_exn QCheck.(Test.make int (fun _ -> true)) in
Alcotest.(check unit) "Success-trivial" () @@ run_test ()
let test_pass_random () =
let run_test () =
check_exn QCheck.(Test.make (list int) (fun l -> List.rev (List.rev l) = l)) in
Alcotest.(check unit) "Success-random" () @@ run_test ()
let test_fail_always () =
let name = "will-always-fail" in
try
check_exn QCheck.(Test.make ~name int (fun _ -> false));
Alcotest.failf "%s: Unexpected success" name
with
(Test.Test_fail (n,[c_ex_str])) ->
Alcotest.(check string) (Printf.sprintf "%s: name" name) n name;
if not (string_starts_with ~prefix:"0" c_ex_str)
then
Alcotest.failf "%s: counter-example prefix. Received \"%s\"" name c_ex_str
let test_fail_random () =
let name = "list is own reverse" in
try
check_exn QCheck.(Test.make ~name (list int) (fun l -> List.rev l = l));
Alcotest.failf "%s: Unexpected success" name
with
(Test.Test_fail (n,[c_ex_str])) ->
Alcotest.(check string) (Printf.sprintf "%s: name" name) n name;
if not (string_starts_with ~prefix:"[0; 1]" c_ex_str
|| string_starts_with ~prefix:"[0; -1]" c_ex_str)
then
Alcotest.failf "%s: counter-example prefix. Received \"%s\"" name c_ex_str
exception MyError
let test_error () =
let name = "will-always-error" in
try
Printexc.record_backtrace false; (* for easier pattern-matching below *)
check_exn QCheck.(Test.make ~name int (fun _ -> raise MyError));
Alcotest.failf "%s: Unexpected success" name
with
(Test.Test_error (n,c_ex_str,MyError,"")) ->
Alcotest.(check string) (Printf.sprintf "%s: name" name) n name;
if not (string_starts_with ~prefix:"0" c_ex_str)
then
Alcotest.failf "%s: counter-example prefix. Received \"%s\"" name c_ex_str
let test_negative_trivial () =
let run_test () = check_exn QCheck2.(Test.make_neg Gen.int (fun _ -> false)) in
Alcotest.(check unit) "Success-negative-trivial" () @@ run_test ()
let test_negative_test_unexpected_success () =
let name = "negative-trivial-test" in
let run_test () = check_exn QCheck2.(Test.make_neg ~name Gen.int (fun _ -> true)) in
try
run_test ();
Alcotest.failf "Negative test didn't raise expected exception."
with
Test.Test_unexpected_success n ->
Alcotest.(check string) (Printf.sprintf "%s: name" name) n name
let tests =
("Test.check_exn", Alcotest.[
test_case "check_exn pass trivial" `Quick test_pass_trivial;
test_case "check_exn pass random" `Quick test_pass_random;
test_case "check_exn fail always" `Quick test_fail_always;
test_case "check_exn fail random" `Quick test_fail_random;
test_case "check_exn Error" `Quick test_error;
test_case "check_exn negative pass trivial" `Quick test_negative_trivial;
test_case "check_exn Unexpected success" `Quick test_negative_test_unexpected_success;
])
end
module TestCount = struct
let test_count_n ?count expected =
let (Test cell) = QCheck.(Test.make ?count int (fun _ -> true)) in
let msg = Printf.sprintf "QCheck.Test.make ~count:%s |> get_count = %d"
(Option.fold ~none:"None" ~some:string_of_int count) expected
in
Alcotest.(check int) msg expected (QCheck.Test.get_count cell)
let test_count_10 () = test_count_n ~count:10 10
let test_count_default () = test_count_n 100
let test_count_env () =
let () = Unix.putenv "QCHECK_COUNT" "5" in
let (Test cell) = QCheck.(Test.make int (fun _ -> true)) in
let actual = QCheck.Test.get_count cell in
Alcotest.(check int) "default count is from QCHECK_COUNT" 5 actual
let test_count_0 () = test_count_n ~count:0 0
let test_count_negative_fail () =
try
let _ = test_count_n ~count:(-1) (-1) in
Alcotest.fail "A negative count in a test should fail"
with
| _ -> ()
let tests =
("Test.make ~count", Alcotest.[
test_case "make with custom count" `Quick test_count_10;
test_case "make with default count" `Quick test_count_default;
test_case "make with env count" `Quick test_count_env;
test_case "make with 0 count" `Quick test_count_0;
test_case "make with negative count should fail"
`Quick test_count_negative_fail;
])
end
module TestLongFactor = struct
let test_long_factor_n ?long_factor expected =
let (Test cell) = QCheck.(Test.make ?long_factor int (fun _ -> true)) in
let msg = Printf.sprintf "QCheck.Test.make ~long_factor:%s |> long_factor = %d"
(Option.fold ~none:"None" ~some:string_of_int long_factor) expected
in
Alcotest.(check int) msg expected (QCheck.Test.get_long_factor cell)
let test_long_factor_10 () = test_long_factor_n ~long_factor:10 10
let test_long_factor_default () = test_long_factor_n 1
let test_long_factor_env () =
let () = Unix.putenv "QCHECK_LONG_FACTOR" "5" in
let (Test cell) = QCheck.(Test.make int (fun _ -> true)) in
let actual = QCheck.Test.get_long_factor cell in
Alcotest.(check int) "default long factor is from QCHECK_LONG_FACTOR" 5 actual
let test_long_factor_0 () = test_long_factor_n ~long_factor:0 0
let test_long_factor_negative_fail () =
try
let _ = test_long_factor_n ~long_factor:(-1) (-1) in
Alcotest.fail "A negative long factor in a test should fail"
with
| _ -> ()
let tests =
("Test.make ~long_factor", Alcotest.[
test_case "make with custom long_factor" `Quick test_long_factor_10;
test_case "make with default long_factor" `Quick test_long_factor_default;
test_case "make with env long_factor" `Quick test_long_factor_env;
test_case "make with 0 long_factor" `Quick test_long_factor_0;
test_case "make with negative long_factor should fail"
`Quick test_long_factor_negative_fail;
])
end
let () =
Alcotest.run "QCheck"
[
Shrink.tests;
Check_exn.tests;
TestCount.tests;
TestLongFactor.tests;
]
|
