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