package log_test;

import log;
import memio;

// The silent logger's callback discards args without touching fmt or
// any sink. Verified indirectly: we wire a memio.stream and never
// pass it to log.silent — but the @test fn calling log.new first
// triggers [[log.ensureinit]] so log.silent is non-nil here. Then
// lprintln(silent, ...) must not crash and the memio sink must stay
// empty (silent has no path to it anyway).
@test fn silentwritesnothing() void = {
	let buf: [16]u8;
	let mem = memio.fixed(buf[0:16]);
	let s = &mem.vt;

	let sl = log.new(s);	// triggers log.ensureinit; populates log.silent

	assert(!(log.silent == nil));

	log.lprintln(log.silent, "ignored", 1i64, true);

	assert(!(mem.pos != 0));
};

// Same pattern as [[silentwritesnothing]] for the bare-args path.
@test fn silentignoresprintfln() void = {
	let buf: [16]u8;
	let mem = memio.fixed(buf[0:16]);
	let s = &mem.vt;

	let sl = log.new(s);	// triggers log.ensureinit; populates log.silent

	assert(!(log.silent == nil));

	log.lprintfln(log.silent, "ignored={}", 1i64);

	assert(!(mem.pos != 0));
};