use Google C++ Testing Framework for libapt tests

My commit 45df0ad2 from 26. Nov 2009 had a little remark:
"The commit also includes a very very simple testapp."
This was never intended to be permanent, but as usually…

The commit adds the needed make magic to compile gtest statically
as it is required and links it against a small runner. All previous
testcase binaries are reimplemented in gtest and combined in this
runner. While most code is a 1:1 translation some had to be rewritten
like compareversion_test.cc, but the coverage remains the same.

1 files changed, 120 insertions, 65 deletions

diff --git a/test/libapt/compareversion_test.cc b/test/libapt/compareversion_test.cc
index 43b98f240..3b2c0c209 100644
--- a/test/libapt/compareversion_test.cc
+++ b/test/libapt/compareversion_test.cc
@@ -28,9 +28,11 @@
 #include <unistd.h>
 #include <sys/wait.h>
 
+#include <gtest/gtest.h>
+
 using namespace std;
 
-static bool callDPkg(const char *val, const char *ref, const char &op) {
+static bool callDPKG(const char *val, const char *ref, const char &op) {
    pid_t Process = ExecFork();
    if (Process == 0)
    {
@@ -49,77 +51,130 @@ static bool callDPkg(const char *val, const char *ref, const char &op) {
    return WIFEXITED(Ret) == true && WEXITSTATUS(Ret) == 0;
 }
 
-static 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());
+#define EXPECT_VERSION_PART(A, compare, B) \
+{ \
+   int Res = debVS.CmpVersion(A, B); \
+   Res = (Res < 0) ? -1 : ( (Res > 0) ? 1 : Res); \
+   EXPECT_EQ(compare, Res) << "APT: A: »" << A << "« B: »" << B << "«"; \
+   EXPECT_PRED3(callDPKG, A, B, compare); \
 }
+#define EXPECT_VERSION(A, compare, B) \
+   EXPECT_VERSION_PART(A, compare, B); \
+   EXPECT_VERSION_PART(B, compare * -1, A)
+
+// History-Remark: The versions used to be specified in a versions.lst file
+
+enum CompareVersionType { LESS = -1, GREATER = 1, EQUAL = 0 };
 
-static bool RunTest(const char *File)
+TEST(CompareVersionTest,Basic)
 {
-   if (FileExists(File) == false)
-      return _error->Error("Versiontestfile %s doesn't exist!", File);
+   EXPECT_VERSION("7.6p2-4", GREATER, "7.6-0");
+   EXPECT_VERSION("1.0.3-3", GREATER, "1.0-1");
+   EXPECT_VERSION("1.3", GREATER, "1.2.2-2");
+   EXPECT_VERSION("1.3", GREATER, "1.2.2");
 
-   ifstream F(File,ios::in);
-   if (!F != 0)
-      return false;
+   /* disabled as dpkg doesn't like them… (versions have to start with a number)
+   EXPECT_VERSION("-", LESS, ".");
+   EXPECT_VERSION("p", LESS, "-");
+   EXPECT_VERSION("a", LESS, "-");
+   EXPECT_VERSION("z", LESS, "-");
+   EXPECT_VERSION("a", LESS, ".");
+   EXPECT_VERSION("z", LESS, ".");
+   // */
 
-   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);
-   }
+   /* disabled as dpkg doesn't like them… (versions have to start with a number)
+   EXPECT_VERSION("III-alpha9.8", LESS, "III-alpha9.8-1.5");
+   // */
+
+   // Test some properties of text strings
+   EXPECT_VERSION("0-pre", EQUAL, "0-pre");
+   EXPECT_VERSION("0-pre", LESS, "0-pree");
+
+   EXPECT_VERSION("1.1.6r2-2", GREATER, "1.1.6r-1");
+   EXPECT_VERSION("2.6b2-1", GREATER, "2.6b-2");
+
+   EXPECT_VERSION("98.1p5-1", LESS, "98.1-pre2-b6-2");
+   EXPECT_VERSION("0.4a6-2", GREATER, "0.4-1");
+
+   EXPECT_VERSION("1:3.0.5-2", LESS, "1:3.0.5.1");
 }
+TEST(CompareVersionTest,Epochs)
+{
+   EXPECT_VERSION("1:0.4", GREATER, "10.3");
+   EXPECT_VERSION("1:1.25-4", LESS, "1:1.25-8");
+   EXPECT_VERSION("0:1.18.36", EQUAL, "1.18.36");
+
+   EXPECT_VERSION("1.18.36", GREATER, "1.18.35");
+   EXPECT_VERSION("0:1.18.36", GREATER, "1.18.35");
+}
+TEST(CompareVersionTest,Strangeness)
+{
+   // Funky, but allowed, characters in upstream version
+   EXPECT_VERSION("9:1.18.36:5.4-20", LESS, "10:0.5.1-22");
+   EXPECT_VERSION("9:1.18.36:5.4-20", LESS, "9:1.18.36:5.5-1");
+   EXPECT_VERSION("9:1.18.36:5.4-20", LESS, " 9:1.18.37:4.3-22");
+   EXPECT_VERSION("1.18.36-0.17.35-18", GREATER, "1.18.36-19");
+
+   // Junk
+   EXPECT_VERSION("1:1.2.13-3", LESS, "1:1.2.13-3.1");
+   EXPECT_VERSION("2.0.7pre1-4", LESS, "2.0.7r-1");
 
-int main(int argc, char *argv[])
+   // if a version includes a dash, it should be the debrev dash - policy says so…
+   EXPECT_VERSION("0:0-0-0", GREATER, "0-0");
+
+   // do we like strange versions? Yes we like strange versions…
+   EXPECT_VERSION("0", EQUAL, "0");
+   EXPECT_VERSION("0", EQUAL, "00");
+}
+TEST(CompareVersionTest,DebianBug)
+{
+   // #205960
+   EXPECT_VERSION("3.0~rc1-1", LESS, "3.0-1");
+   // #573592 - debian policy 5.6.12
+   EXPECT_VERSION("1.0", EQUAL, "1.0-0");
+   EXPECT_VERSION("0.2", LESS, "1.0-0");
+   EXPECT_VERSION("1.0", LESS, "1.0-0+b1");
+   EXPECT_VERSION("1.0", GREATER, "1.0-0~");
+}
+TEST(CompareVersionTest,CuptTests)
 {
-   if (argc != 2)
-      return 1;
-   else
-      RunTest(argv[1]);
-
-   // Print any errors or warnings found
-   _error->DumpErrors();
-   return 0;
+   // "steal" the testcases from (old perl) cupt
+   EXPECT_VERSION("1.2.3", EQUAL, "1.2.3"); // identical
+   EXPECT_VERSION("4.4.3-2", EQUAL, "4.4.3-2"); // identical
+   EXPECT_VERSION("1:2ab:5", EQUAL, "1:2ab:5"); // this is correct...
+   EXPECT_VERSION("7:1-a:b-5", EQUAL, "7:1-a:b-5"); // and this
+   EXPECT_VERSION("57:1.2.3abYZ+~-4-5", EQUAL, "57:1.2.3abYZ+~-4-5"); // and those too
+   EXPECT_VERSION("1.2.3", EQUAL, "0:1.2.3"); // zero epoch
+   EXPECT_VERSION("1.2.3", EQUAL, "1.2.3-0"); // zero revision
+   EXPECT_VERSION("009", EQUAL, "9"); // zeroes…
+   EXPECT_VERSION("009ab5", EQUAL, "9ab5"); // there as well
+   EXPECT_VERSION("1.2.3", LESS, "1.2.3-1"); // added non-zero revision
+   EXPECT_VERSION("1.2.3", LESS, "1.2.4"); // just bigger
+   EXPECT_VERSION("1.2.4", GREATER, "1.2.3"); // order doesn't matter
+   EXPECT_VERSION("1.2.24", GREATER, "1.2.3"); // bigger, eh?
+   EXPECT_VERSION("0.10.0", GREATER, "0.8.7"); // bigger, eh?
+   EXPECT_VERSION("3.2", GREATER, "2.3"); // major number rocks
+   EXPECT_VERSION("1.3.2a", GREATER, "1.3.2"); // letters rock
+   EXPECT_VERSION("0.5.0~git", LESS, "0.5.0~git2"); // numbers rock
+   EXPECT_VERSION("2a", LESS, "21"); // but not in all places
+   EXPECT_VERSION("1.3.2a", LESS, "1.3.2b"); // but there is another letter
+   EXPECT_VERSION("1:1.2.3", GREATER, "1.2.4"); // epoch rocks
+   EXPECT_VERSION("1:1.2.3", LESS, "1:1.2.4"); // bigger anyway
+   EXPECT_VERSION("1.2a+~bCd3", LESS, "1.2a++"); // tilde doesn't rock
+   EXPECT_VERSION("1.2a+~bCd3", GREATER, "1.2a+~"); // but first is longer!
+   EXPECT_VERSION("5:2", GREATER, "304-2"); // epoch rocks
+   EXPECT_VERSION("5:2", LESS, "304:2"); // so big epoch?
+   EXPECT_VERSION("25:2", GREATER, "3:2"); // 25 > 3, obviously
+   EXPECT_VERSION("1:2:123", LESS, "1:12:3"); // 12 > 2
+   EXPECT_VERSION("1.2-5", LESS, "1.2-3-5"); // 1.2 < 1.2-3
+   EXPECT_VERSION("5.10.0", GREATER, "5.005"); // preceding zeroes don't matters
+   EXPECT_VERSION("3a9.8", LESS, "3.10.2"); // letters are before all letter symbols
+   EXPECT_VERSION("3a9.8", GREATER, "3~10"); // but after the tilde
+   EXPECT_VERSION("1.4+OOo3.0.0~", LESS, "1.4+OOo3.0.0-4"); // another tilde check
+   EXPECT_VERSION("2.4.7-1", LESS, "2.4.7-z"); // revision comparing
+   EXPECT_VERSION("1.002-1+b2", GREATER, "1.00"); // whatever...
+   /* disabled as dpkg doesn't like them… (versions with illegal char)
+   EXPECT_VERSION("2.2.4-47978_Debian_lenny", EQUAL, "2.2.4-47978_Debian_lenny"); // and underscore...
+   // */
 }