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c++: style: improve tests

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* tests/c++.at (C++ Variant-based Symbols Unit Tests): Provide better
assertions.
Use them.
Avoid useless Bison invocations.
This commit is contained in:
Akim Demaille
2018-12-23 19:45:07 +01:00
parent 9858165c52
commit 45cd7dfb7f
1 changed files with 20 additions and 13 deletions
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33
tests/c++.at
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@@ -103,7 +103,7 @@ AT_KEYWORDS([variant])
AT_BISON_OPTION_PUSHDEFS([%skeleton "lalr1.cc" %debug $1])
# Store strings and integers in a vector of strings.
AT_DATA_GRAMMAR([list.y],
AT_DATA_GRAMMAR([list.yy],
[[%skeleton "lalr1.cc"
%define api.value.type variant
%define parse.assert
@@ -142,24 +142,33 @@ exp: "int" { $$.push_back ($1); }
]AT_YYERROR_DEFINE[
]AT_YYLEX_DEFINE[
template <typename Exp, typename Eff>
void assert_eq (const Exp& exp, const Eff& eff)
{
if (getenv ("DEBUG"))
std::cerr << "Assert: " << exp << " == " << eff << '\n';
if (exp != eff)
std::cerr << "Assertion failed: " << exp << " != " << eff << '\n';
}
int main()
{
using yy::parser;
// symbol_type: construction, accessor.
{
parser::symbol_type s = parser::make_INT(12);
std::cerr << s.value.as<int>() << '\n';
parser::symbol_type s = parser::make_INT (12);
assert_eq (s.value.as<int> (), 12);
}
// stack_symbol_type: construction, accessor.
{
#if defined __cplusplus && 201103L <= __cplusplus
#if 201103L <= YY_CPLUSPLUS
auto ss = parser::stack_symbol_type(1, parser::make_INT(123));
#else
parser::symbol_type s = parser::make_INT(123);
parser::symbol_type s = parser::make_INT (123);
parser::stack_symbol_type ss(1, s);
#endif
std::cerr << ss.value.as<int>() << '\n';
assert_eq (ss.value.as<int> (), 123);
}
// Pushing on the stack.
@@ -171,7 +180,7 @@ int main()
const int int_reduction_state = 1; // Read list.output to find it.
for (int i = 0; i < mucho; ++i)
{
#if defined __cplusplus && 201103L <= __cplusplus
#if 201103L <= YY_CPLUSPLUS
st.push(parser::stack_symbol_type{int_reduction_state,
parser::make_INT (i)});
#else
@@ -182,19 +191,17 @@ int main()
}
for (int i = mucho - 1; 0 <= i; --i)
{
assert (st[0].value.as<int>() == i);
assert_eq (st[0].value.as<int>(), i);
st.pop ();
}
}
}
]])
AT_BISON_CHECK([[-o list.cc list.yy]])
AT_FOR_EACH_CXX([
AT_FULL_COMPILE([list])
AT_PARSER_CHECK([./list], 0, [],
[12
123
])
AT_COMPILE_CXX([list])
AT_PARSER_CHECK([./list])
])
AT_BISON_OPTION_POPDEFS