zig/test/cases/undefined.zig
Jimmi Holst Christensen 378d3e4403
Solve the return type ambiguity (#1628)
Changed container and initializer syntax
* <container> { ... } -> <container> . { ... }
* <exrp> { ... } -> <expr> . { ...}
2018-10-15 09:51:15 -04:00

69 lines
1.4 KiB
Zig

const assert = @import("std").debug.assert;
const mem = @import("std").mem;
fn initStaticArray() [10]i32 {
var array: [10]i32 = undefined;
array[0] = 1;
array[4] = 2;
array[7] = 3;
array[9] = 4;
return array;
}
const static_array = initStaticArray();
test "init static array to undefined" {
assert(static_array[0] == 1);
assert(static_array[4] == 2);
assert(static_array[7] == 3);
assert(static_array[9] == 4);
comptime {
assert(static_array[0] == 1);
assert(static_array[4] == 2);
assert(static_array[7] == 3);
assert(static_array[9] == 4);
}
}
const Foo = struct.{
x: i32,
fn setFooXMethod(foo: *Foo) void {
foo.x = 3;
}
};
fn setFooX(foo: *Foo) void {
foo.x = 2;
}
test "assign undefined to struct" {
comptime {
var foo: Foo = undefined;
setFooX(&foo);
assert(foo.x == 2);
}
{
var foo: Foo = undefined;
setFooX(&foo);
assert(foo.x == 2);
}
}
test "assign undefined to struct with method" {
comptime {
var foo: Foo = undefined;
foo.setFooXMethod();
assert(foo.x == 3);
}
{
var foo: Foo = undefined;
foo.setFooXMethod();
assert(foo.x == 3);
}
}
test "type name of undefined" {
const x = undefined;
assert(mem.eql(u8, @typeName(@typeOf(x)), "(undefined)"));
}