So, I'm trying to run some tests and I had code that looks
similar to this:
unittest
{
auto range =
readStream(File("test_data/multiple.xml").byLine);
int count = 0;
while (!range.empty)
{
count++;
range.popFront();
}
assert(count == 3);
}
However, if I have a second block above/below it doing the same
thing, the last assert will fail because in the second block it
appears the ranges have been joined together. E.g.:
unittest
{
auto range =
readStream(File("test_data/multiple.xml").byLine);
int count = 0;
while (!range.empty)
{
count++;
range.popFront();
}
assert(count == 3); // Passes
}
unittest
{
auto range =
readStream(File("test_data/another.xml").byLine);
int count = 0;
while (!range.empty)
{
count++;
range.popFront();
}
assert(count == 2); // Fails
}
To me, it looks like range is not being overwritten. The code
for readStream looks similar to this:
auto readStream(Range)(auto ref Range r) if
(isInputRange!(Unqual!Range))
{
struct StreamRange(Range)
{
alias R = Unqual!Range;
R _input;
this(R input)
{
this._input = input;
}
bool empty()
{
return this._input.empty;
}
string front()
{
// Do stuff...
}
void popFront()
{
}
}
return StreamRange!(Range)(r);
}
I feel like I'm missing something obscure and it's driving me a
bit batty. Any clue as to why this is happening? I'd like to
not have to worry about creating new variable names between
tests. To me, it seems like each unittest block is independent
of each other and I haven't come across anything that contradicts
that. However, I didn't find anything that confirms it either.
Thanks.
