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#include "builder.h"
#include <library/cpp/testing/unittest/registar.h>
static void TestEquals(const TString& expected, const TString& actual) {
UNIT_ASSERT_VALUES_EQUAL(expected, actual);
}
struct TClassWithStreamOperator {
ui32 Id;
TString Name;
TClassWithStreamOperator(ui32 id, const TString& name)
: Id(id)
, Name(name)
{
}
};
IOutputStream& operator<<(IOutputStream& out, const TClassWithStreamOperator& value) {
return out << value.Id << " " << value.Name;
}
Y_UNIT_TEST_SUITE(TStringBuilderTest) {
Y_UNIT_TEST(TestStringBuilder) {
TestEquals("", TStringBuilder());
TestEquals("a", TStringBuilder() << "a");
TestEquals("a1", TStringBuilder() << "a" << 1);
TestEquals("value: 123 name", TStringBuilder() << "value: " << TClassWithStreamOperator(123, "name"));
}
Y_UNIT_TEST(TestStringBuilderOut) {
TString s;
TStringOutput out(s);
TStringBuilder sb;
sb << "a";
out << sb;
TestEquals("a", s);
}
Y_UNIT_TEST(TestStringBuilderRValue) {
struct TRValueAcceptTester {
static bool IsRValue(const TString&) {
return false;
}
static bool IsRValue(TString&&) {
return true;
}
};
UNIT_ASSERT(TRValueAcceptTester::IsRValue(TStringBuilder() << "a" << 1));
TStringBuilder b;
UNIT_ASSERT(!TRValueAcceptTester::IsRValue(b << "a" << 1));
TStringBuilder b2;
UNIT_ASSERT(!TRValueAcceptTester::IsRValue(b2 << "a" << 1 << TStringBuilder() << "a"));
UNIT_ASSERT_VALUES_EQUAL("a1a", b2);
UNIT_ASSERT(TRValueAcceptTester::IsRValue(TStringBuilder() << b2));
UNIT_ASSERT_VALUES_EQUAL("a1a", TStringBuilder() << b2);
}
}
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