ucmpti2_test.zig (2821B) - Raw
1 const cmp = @import("cmp.zig"); 2 const testing = @import("std").testing; 3 4 fn test__ucmpti2(a: u128, b: u128, expected: i32) !void { 5 const result = cmp.__ucmpti2(a, b); 6 try testing.expectEqual(expected, result); 7 } 8 9 test "ucmpti2" { 10 // minInt == 0 11 // maxInt == 340282366920938463463374607431768211455 12 // minInt/2 == 0 13 // maxInt/2 == 170141183460469231731687303715884105727 14 // 1. equality minInt, minInt+1, maxInt/2, maxInt-1, maxInt 15 try test__ucmpti2(0, 0, 1); 16 try test__ucmpti2(1, 1, 1); 17 try test__ucmpti2(170141183460469231731687303715884105727, 170141183460469231731687303715884105727, 1); 18 try test__ucmpti2(340282366920938463463374607431768211454, 340282366920938463463374607431768211454, 1); 19 try test__ucmpti2(340282366920938463463374607431768211455, 340282366920938463463374607431768211455, 1); 20 // 2. cmp minInt, {minInt + 1, maxInt/2, maxInt-1, maxInt} 21 try test__ucmpti2(0, 1, 0); 22 try test__ucmpti2(0, 170141183460469231731687303715884105727, 0); 23 try test__ucmpti2(0, 340282366920938463463374607431768211454, 0); 24 try test__ucmpti2(0, 340282366920938463463374607431768211455, 0); 25 // 3. cmp minInt+1, {minInt, maxInt/2, maxInt-1, maxInt} 26 try test__ucmpti2(1, 0, 2); 27 try test__ucmpti2(1, 170141183460469231731687303715884105727, 0); 28 try test__ucmpti2(1, 340282366920938463463374607431768211454, 0); 29 try test__ucmpti2(1, 340282366920938463463374607431768211455, 0); 30 // 4. cmp minInt/2, {} 31 // 5. cmp -1, {} 32 // 6. cmp 0, {} 33 // 7. cmp 1, {} 34 // 8. cmp maxInt/2, {} 35 try test__ucmpti2(170141183460469231731687303715884105727, 0, 2); 36 try test__ucmpti2(170141183460469231731687303715884105727, 1, 2); 37 try test__ucmpti2(170141183460469231731687303715884105727, 340282366920938463463374607431768211454, 0); 38 try test__ucmpti2(170141183460469231731687303715884105727, 340282366920938463463374607431768211455, 0); 39 // 9. cmp maxInt-1, {minInt, minInt + 1, maxInt/2, maxInt} 40 try test__ucmpti2(340282366920938463463374607431768211454, 0, 2); 41 try test__ucmpti2(340282366920938463463374607431768211454, 1, 2); 42 try test__ucmpti2(340282366920938463463374607431768211454, 170141183460469231731687303715884105727, 2); 43 try test__ucmpti2(340282366920938463463374607431768211454, 340282366920938463463374607431768211455, 0); 44 // 10.cmp maxInt, {minInt, minInt + 1, minInt/2, -2,-1,0,1,2, maxInt/2, maxInt-1, } 45 try test__ucmpti2(340282366920938463463374607431768211455, 0, 2); 46 try test__ucmpti2(340282366920938463463374607431768211455, 1, 2); 47 try test__ucmpti2(340282366920938463463374607431768211455, 170141183460469231731687303715884105727, 2); 48 try test__ucmpti2(340282366920938463463374607431768211455, 340282366920938463463374607431768211454, 2); 49 }