lix/tests/unit/libexpr/expr-print.cc
Qyriad 59bf6825ef add an impl of Expr::show for ExprInheritFrom that doesn't crash
ExprVar::show() assumes it has a name. dynamic inherits do not
necessarily (ever?) have a name.

Change-Id: If10893188e307431da17f0c1bd0787adc74f7141
2024-07-04 15:55:38 -06:00

34 lines
770 B
C++

#include <sstream>
#include <string_view>
#include <gtest/gtest.h>
#include "tests/libexpr.hh"
#include "nixexpr.hh"
#include "ref.hh"
namespace nix
{
using namespace testing;
struct ExprPrintingTests : LibExprTest
{
void test(Expr const & expr, std::string_view expected)
{
std::stringstream out;
expr.show(state.symbols, out);
ASSERT_EQ(out.str(), expected);
}
};
TEST_F(ExprPrintingTests, ExprInheritFrom)
{
// ExprInheritFrom has its own show() impl.
// If it uses its parent class's impl it will crash.
auto inheritSource = make_ref<ExprVar>(state.symbols.create("stdenv"));
ExprInheritFrom const eInheritFrom(noPos, 0, inheritSource);
test(eInheritFrom, "(/* expanded inherit (expr) */ stdenv)");
}
}