1const negv = @import("negv.zig");
 2const testing = @import("std").testing;
 3
 4fn test__negvsi2(a: i32, expected: i32) !void {
 5    const result = negv.__negvsi2(a);
 6    try testing.expectEqual(expected, result);
 7}
 8
 9test "negvsi2" {
10    // -2^31 <= i32 <= 2^31-1
11    // 2^31 = 2147483648
12    // 2^31-1 = 2147483647
13    // TODO write panic handler for testing panics
14    //try test__negvsi2(-2147483648, -5); // tested with return -5; and panic
15    try test__negvsi2(-2147483647, 2147483647);
16    try test__negvsi2(-2147483646, 2147483646);
17    try test__negvsi2(-2147483645, 2147483645);
18    try test__negvsi2(-2147483644, 2147483644);
19    try test__negvsi2(-42, 42);
20    try test__negvsi2(-7, 7);
21    try test__negvsi2(-1, 1);
22    try test__negvsi2(0, 0);
23    try test__negvsi2(1, -1);
24    try test__negvsi2(7, -7);
25    try test__negvsi2(42, -42);
26    try test__negvsi2(2147483644, -2147483644);
27    try test__negvsi2(2147483645, -2147483645);
28    try test__negvsi2(2147483646, -2147483646);
29    try test__negvsi2(2147483647, -2147483647);
30}