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std.testing: allow print() at comptime

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This allows functions like expectEqual to be performed at comptime. If
an error is detected, the result is logged via a compile error.
This commit is contained in:
Robin Voetter
2023-10-08 17:02:59 +02:00
parent 839a93a101
commit dc44baf763
1 changed files with 7 additions and 3 deletions
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10
lib/std/testing.zig
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@@ -22,10 +22,14 @@ pub var base_allocator_instance = std.heap.FixedBufferAllocator.init("");
pub var log_level = std.log.Level.warn;
fn print(comptime fmt: []const u8, args: anytype) void {
// Disable printing in tests for simple backends.
if (builtin.zig_backend == .stage2_spirv64) return;
if (@inComptime()) {
@compileError(std.fmt.comptimePrint(fmt, args));
} else {
// Disable printing in tests for simple backends.
if (builtin.zig_backend == .stage2_spirv64) return;
std.debug.print(fmt, args);
std.debug.print(fmt, args);
}
}
/// This function is intended to be used only in tests. It prints diagnostics to stderr