Source
pub fn expectStringStartsWith(actual: []const u8, expected_starts_with: []const u8) !void {
if (std.mem.startsWith(u8, actual, expected_starts_with))
return;
const shortened_actual = if (actual.len >= expected_starts_with.len)
actual[0..expected_starts_with.len]
else
actual;
print("\n====== expected to start with: =========\n", .{});
printWithVisibleNewlines(expected_starts_with);
print("\n====== instead started with: ===========\n", .{});
printWithVisibleNewlines(shortened_actual);
print("\n========= full output: ==============\n", .{});
printWithVisibleNewlines(actual);
print("\n======================================\n", .{});
return error.TestExpectedStartsWith;
}