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c3c/test/unit/stdlib/core/formatter.c3
2025-03-03 00:32:20 +01:00

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module std::core::formatter_test;
import std;
struct Foo (Printable) { int a; }
fn usz! Foo.to_format(&self, Formatter *f) @dynamic
{
return f.printf("Foo[%d]", self.a);
}
fn void test_ref() @test
{
Foo* f = &&(Foo){ 8 };
Foo* f0 = null;
int* a = (void*)(uptr)0x40;
int* b = null;
String s = string::format(mem, "%s %s %s %s %s", a, b, f0, f, *f);
defer free(s);
assert(s == "0x40 0x0 (null) Foo[8] Foo[8]");
}