Complete documentation regarding Python 3 requirement.

[ginac.git] / check / exam_paranoia.cpp

diff --git a/check/exam_paranoia.cpp b/check/exam_paranoia.cpp
index 7be66fdfd8a9ebdb13bbd37618670ecb9779524a..b5f1260816be3cd2c2249d919a56d56d8ebf5126 100644 (file)
--- a/check/exam_paranoia.cpp
+++ b/check/exam_paranoia.cpp
@@ -1,12 +1,12 @@
 /** @file exam_paranoia.cpp
  *
  *  This set of tests checks for some of GiNaC's oopses which showed up during
- *  development.  Things were evaluated wrongly and so.  Such a sick behaviour
+ *  development.  Things were evaluated wrongly and so.  Such a sick behavior
  *  shouldn't occur any more.  But we are paranoic and we want to exclude these
  *  these oopses for good, so we run those stupid tests... */
 
 /*
- *  GiNaC Copyright (C) 1999-2015 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -577,6 +577,65 @@ static unsigned exam_paranoia23()
        return result;
 }
 
+// Bug in sqrfree_yun (fixed 2016-02-02).
+static unsigned exam_paranoia24()
+{
+       unsigned result = 0;
+       symbol x("x");
+       ex e;
+
+       e = (x-1)*(x+1) - x*x + 1;  // an unexpanded 0...
+       try {
+               ex f = sqrfree(e);
+               if (!f.is_zero()) {
+                       clog << "sqrfree(" << e << ") returns " << f << " instead of 0\n";
+                       ++result;
+               }
+       } catch (const exception &err) {
+               clog << "sqrfree(" << e << ") throws " << err.what() << endl;
+               ++result;
+       }
+
+       e = pow(x-1,3) - expand(pow(x-1,3));  // ...still after differentiating...
+       try {
+               ex f = sqrfree(e);
+               if (!f.is_zero()) {
+                       clog << "sqrfree(" << e << ") returns " << f << " instead of 0\n";
+                       ++result;
+               }
+       } catch (const exception &err) {
+               clog << "sqrfree(" << e << ") throws " << err.what() << endl;
+               ++result;
+       }
+
+       e = pow(x-1,4) - expand(pow(x-1,4));  // ...and after differentiating twice.
+       try {
+               ex f = sqrfree(e);
+               if (!f.is_zero()) {
+                       clog << "sqrfree(" << e << ") returns " << f << " instead of 0\n";
+                       ++result;
+               }
+       } catch (const exception &err) {
+               clog << "sqrfree(" << e << ") throws " << err.what() << endl;
+               ++result;
+       }
+
+       return result;
+}
+
+// Bug in add ctor
+unsigned exam_paranoia25()
+{
+       symbol a("a"), b("b"), c("c");
+       ex e = -a + 2*b + c;
+
+       if (e.diff(c).nops() > 1) {
+               clog << "diff(" << e << ",c) was not fully evaluated.\n";
+               return 1;
+       }
+       return 0;
+}
+
 unsigned exam_paranoia()
 {
        unsigned result = 0;
@@ -607,6 +666,8 @@ unsigned exam_paranoia()
        result += exam_paranoia21();  cout << '.' << flush;
        result += exam_paranoia22();  cout << '.' << flush;
        result += exam_paranoia23();  cout << '.' << flush;
+       result += exam_paranoia24();  cout << '.' << flush;
+       result += exam_paranoia25();  cout << '.' << flush;
        
        return result;
 }