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devise a pipeline based variant of stringify()

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This commit is contained in:
Fischlurch 2016-02-04 23:05:41 +01:00
parent 0208451906
commit 2cb1ea6920
1 changed files with 32 additions and 0 deletions
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32
tests/library/format-helper-test.cpp
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@ -33,6 +33,7 @@
using lib::transformIterator;
using lib::iter_stl::eachElm;
using lib::eachNum;
using util::_Fmt;
using std::vector;
@ -41,6 +42,14 @@ using std::to_string;
namespace util {
template<class IT>
inline lib::TransformIter<IT, string>
stringify (IT const& src)
{
using Val = typename IT::value_type;
return transformIterator(src, util::toString<Val>);
}
namespace test {
namespace { // test fixture...
@ -95,6 +104,7 @@ namespace test {
run (Arg)
{
check2String();
checkStringify();
checkStringJoin();
checkPrefixSuffix();
}
@ -124,6 +134,28 @@ namespace test {
}
/** @test inline to-string converter function
* - can be used as transforming iterator
* - alternatively accept arbitrary arguments
*/
void
checkStringify()
{
auto ss = stringify (eachNum (1.11, 10.2));
CHECK (ss);
CHECK ("1.11" == *ss);
++ss;
CHECK ("2.11" == *ss);
string res{".."};
for (auto s : ss)
res += s;
CHECK (res == "..2.113.114.115.116.117.118.119.1110.11");
}
/** @test verify delimiter separated joining of arbitrary collections.
* - the first test uses a STL container, which means we need to wrap
* into a lib::RangeIter. Moreover, lexical_cast is used to convert