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complete the tests for Variable class #6

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Merged
merged 1 commit into from
Apr 28, 2020
Merged

complete the tests for Variable class #6

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38 changes: 32 additions & 6 deletions tests/variable_test.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3,21 +3,47 @@

using namespace datalog;

bool freeVariableTest() {
bool freeVariableTest()
{
Variable<int> intVar;
return !intVar.isBound();
}

bool boundVariableTest() {
bool boundVariableTest()
{
Variable<int> intVar;
intVar.bind(0);
return intVar.isBound();
}

TEST_CASE( "An new variable is unbound", "[variable]" ) {
REQUIRE( freeVariableTest() == true );
bool bindUnbindTest()
{
Variable<int> intVar;
intVar.bind(0);
intVar.unbind();
return !intVar.isBound();
}

bool storesValueTest()
{
Variable<int> intVar;
const int value = 100;
intVar.bind(value);
return intVar.isBound() and intVar.value() == value;
}

bool absentValueTest()
{
Variable<int> intVar;
const auto &val = intVar.value();
return true;
}

TEST_CASE( "A variable with a value is bound", "[variable]" ) {
REQUIRE( boundVariableTest() == true );
TEST_CASE("variable binding", "[variable]")
{
REQUIRE(freeVariableTest());
REQUIRE(boundVariableTest());
REQUIRE(bindUnbindTest());
REQUIRE(bindUnbindTest());
REQUIRE_THROWS_AS(absentValueTest(), std::bad_optional_access);
}