// file : tests/depdb/driver.cxx -*- C++ -*- // copyright : Copyright (c) 2014-2018 Code Synthesis Ltd // license : MIT; see accompanying LICENSE file #include <iostream> #include <libbutl/filesystem.mxx> #include <build2/types.hxx> #include <build2/utility.hxx> #include <build2/depdb.hxx> using namespace std; using namespace build2; int main (int argc, char* argv[]) { if (argc != 2) { cerr << "usage: " << argv[0] << " <db-file>" << endl; return 1; } path p (argv[1]); auto rm = [&p] () {try_rmfile (p);}; // Create empty database. // { rm (); { depdb d (p); assert (d.writing ()); d.close (); } { depdb d (p); assert (d.reading ()); assert (!d.more ()); assert (d.read () == nullptr); d.close (); } } // No close/end marker. // { rm (); { depdb d (p); assert (d.writing ()); // No close. } { depdb d (p); assert (d.writing ()); d.close (); } { depdb d (p); assert (d.reading ()); } } // Overwrite/append/truncate. // { rm (); { depdb d (p); d.write ("foo"); d.close (); } { depdb d (p); assert (*d.read () == "foo"); assert (!d.more ()); d.close (); } { depdb d (p); assert (*d.read () == "foo"); assert (!d.more ()); d.write ("FOO"); d.close (); } { depdb d (p); assert (*d.read () == "FOO"); assert (!d.more ()); assert (d.read () == nullptr); assert (d.read () == nullptr); d.write ("BAR"); d.close (); } { depdb d (p); assert (*d.read () == "FOO"); assert (d.more ()); d.write ("foo"); d.close (); // Truncate. } { depdb d (p); assert (*d.read () == "foo"); assert (!d.more ()); } // Stray end marker. // { depdb d (p); assert (*d.read () == "foo"); d.write ("fox"); // No close. } { depdb d (p); assert (d.more ()); assert (*d.read () == "fox"); assert (!d.more ()); } } // Read/truncate. // { rm (); { depdb d (p); d.write ("foo"); d.write ("bar"); d.close (); } { depdb d (p); assert (*d.read () == "foo"); assert (d.more ()); d.close (); // Truncate bar. } { depdb d (p); assert (*d.read () == "foo"); assert (!d.more ()); } } rm (); }