1 files changed, 123 insertions, 0 deletions
diff --git a/test/libapt/compareversion_test.cc b/test/libapt/compareversion_test.cc
new file mode 100644
index 000000000..b6213e84c
--- /dev/null
+++ b/test/libapt/compareversion_test.cc
@@ -0,0 +1,123 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/* ######################################################################
+
+   Version Test - Simple program to run through a file and comare versions.
+   
+   Each version is compared and the result is checked against an expected
+   result in the file. The format of the file is
+       a b Res
+   Where Res is -1, 1, 0. dpkg -D=1 --compare-versions a "<" b can be
+   used to determine what Res should be. # at the start of the line
+   is a comment and blank lines are skipped
+
+   The runner will also call dpkg --compare-versions to check if APT and
+   dpkg have (still) the same idea.
+   
+   ##################################################################### */
+									/*}}}*/
+#include <apt-pkg/macros.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/version.h>
+#include <apt-pkg/debversion.h>
+#include <apt-pkg/fileutl.h>
+#include <iostream>
+#include <fstream>
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+using namespace std;
+
+bool callDPkg(const char *val, const char *ref, const char &op) {
+   pid_t Process = ExecFork();
+   if (Process == 0)
+   {
+      const char * args[6];
+      args[0] = "/usr/bin/dpkg";
+      args[1] = "--compare-versions";
+      args[2] = val;
+      args[3] = (op == 1) ? ">>" : ( (op == 0) ? "=" : "<<");
+      args[4] = ref;
+      args[5] = 0;
+      execv(args[0], (char**) args);
+      exit(1);
+   }
+   int Ret;
+   waitpid(Process, &Ret, 0);
+   return WIFEXITED(Ret) == true && WEXITSTATUS(Ret) == 0;
+}
+
+void assertVersion(int const &CurLine, string const &A, string const &B, int const &Expected) {
+   int Res = debVS.CmpVersion(A.c_str(), B.c_str());
+   bool const dpkg = callDPkg(A.c_str(),B.c_str(), Expected);
+   Res = (Res < 0) ? -1 : ( (Res > 0) ? 1 : Res);
+
+   if (Res != Expected)
+      _error->Error("Comparison failed on line %u. '%s' '%s' '%s' %i != %i",CurLine,A.c_str(),((Expected == 1) ? "<<" : ( (Expected == 0) ? "=" : ">>")) ,B.c_str(),Res,Expected);
+   if (dpkg == false)
+      _error->Error("DPkg differ with line: %u. '%s' '%s' '%s' == false",CurLine,A.c_str(),((Expected == 1) ? "<<" : ( (Expected == 0) ? "=" : ">>")),B.c_str());
+}
+
+bool RunTest(const char *File)
+{
+   ifstream F(File,ios::in);
+   if (!F != 0)
+      return false;
+
+   char Buffer[300];
+   int CurLine = 0;
+   
+   while (1)
+   {
+      F.getline(Buffer,sizeof(Buffer));
+      CurLine++;
+      if (F.eof() != 0)
+	 return true;
+      if (!F != 0)
+	 return _error->Error("Line %u in %s is too long",CurLine,File);
+
+      // Comment
+      if (Buffer[0] == '#' || Buffer[0] == 0)
+	 continue;
+      
+      // First version
+      char *I;
+      char *Start = Buffer;
+      for (I = Buffer; *I != 0 && *I != ' '; I++);
+      string A(Start, I - Start);
+
+      if (*I == 0)
+	 return _error->Error("Invalid line %u",CurLine);
+      
+      // Second version
+      I++;
+      Start = I;
+      for (I = Start; *I != 0 && *I != ' '; I++);
+      string B(Start,I - Start);
+      
+      if (*I == 0 || I[1] == 0)
+	 return _error->Error("Invalid line %u",CurLine);
+      
+      // Result
+      I++;
+      int const Expected = atoi(I);
+      assertVersion(CurLine, A, B, Expected);
+      // Check the reverse as well
+      assertVersion(CurLine, B, A, Expected*-1);
+   }
+}
+
+int main(int argc, char *argv[])
+{
+   if (argc <= 1)
+      RunTest("../versions.lst");
+   else
+      RunTest(argv[1]);
+
+   // Print any errors or warnings found
+   _error->DumpErrors();
+   return 0;
+}