zig/test/behavior/this.zig
2024-01-06 16:49:41 -08:00

58 lines
1.4 KiB
Zig

const expect = @import("std").testing.expect;
const builtin = @import("builtin");
const module = @This();
fn Point(comptime T: type) type {
return struct {
const Self = @This();
x: T,
y: T,
fn addOne(self: *Self) void {
self.x += 1;
self.y += 1;
}
};
}
fn add(x: i32, y: i32) i32 {
return x + y;
}
test "this refer to module call private fn" {
try expect(module.add(1, 2) == 3);
}
test "this refer to container" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
var pt: Point(i32) = undefined;
pt.x = 12;
pt.y = 34;
Point(i32).addOne(&pt);
try expect(pt.x == 13);
try expect(pt.y == 35);
}
const State = struct {
const Self = @This();
enter: *const fn (previous: ?Self) void,
};
fn prev(p: ?State) void {
expect(p == null) catch @panic("test failure");
}
test "this used as optional function parameter" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
var global: State = undefined;
global.enter = prev;
global.enter(null);
}