Made region tests less susceptible to 'unordered_set' implementation details.

src/db/db/dbEdgePair.cc

@@ -43,16 +43,26 @@ template<> void extractor_impl (tl::Extractor &ex, db::DEdgePair &e)
 template<class C> bool _test_extractor_impl (tl::Extractor &ex, db::edge_pair<C> &e)
 {
   typedef db::edge<C> edge_type;
+  tl::Extractor ex_saved = ex;
 
   edge_type e1, e2;
 
   if (ex.try_read (e1)) {
 
-    ex.expect ("/");
-    ex.read (e2);
+    bool symmetric = false;
+    if (ex.test ("|")) {
+      symmetric = true;
+    } else if (! ex.test ("/")) {
+      ex = ex_saved;
+      return false;
+    }
 
-    e = db::edge_pair<C> (e1, e2);
+    if (! ex.try_read (e2)) {
+      ex = ex_saved;
+      return false;
+    }
 
+    e = db::edge_pair<C> (e1, e2, symmetric);
     return true;
 
   } else {

src/db/db/dbEdgePairs.cc

@@ -204,6 +204,9 @@ namespace tl
   {
     db::EdgePair ep;
 
+    if (ex.at_end ()) {
+      return true;
+    }
     if (! ex.try_read (ep)) {
       return false;
     }

src/db/db/dbEdges.cc

@@ -229,6 +229,9 @@ namespace tl
   {
     db::Edge p;
 
+    if (ex.at_end ()) {
+      return true;
+    }
     if (! ex.try_read (p)) {
       return false;
     }

src/db/db/dbPolygon.cc

@@ -514,6 +514,8 @@ template<class C> DB_PUBLIC bool _test_extractor_impl (tl::Extractor &ex, db::po
 
   if (ex.test ("(")) {
 
+    p.clear ();
+
     point_type pt;
     while (ex.try_read (pt)) {
       points.push_back (pt);

src/db/db/dbRegion.cc

@@ -607,6 +607,9 @@ namespace tl
   {
     db::Polygon p;
 
+    if (ex.at_end ()) {
+      return true;
+    }
     if (! ex.try_read (p)) {
       return false;
     }
@@ -623,7 +626,7 @@ namespace tl
   template<> DB_PUBLIC void extractor_impl (tl::Extractor &ex, db::Region &b)
   {
     if (! test_extractor_impl (ex, b)) {
-      ex.error (tl::to_string (tr ("Expected an region collection specification")));
+      ex.error (tl::to_string (tr ("Expected a region specification")));
     }
   }
 }

src/db/db/dbTestSupport.cc

@@ -30,6 +30,10 @@
 #include "dbLayoutDiff.h"
 #include "dbNetlist.h"
 #include "dbNetlistCompare.h"
+#include "dbRegion.h"
+#include "dbEdges.h"
+#include "dbEdgePairs.h"
+#include "dbTexts.h"
 
 #include "tlUnitTest.h"
 #include "tlFileUtils.h"
@@ -326,5 +330,87 @@ void DB_PUBLIC compare_netlist (tl::TestBase *_this, const db::Netlist &netlist,
   }
 }
 
+template <class Container, class Shape>
+static
+bool do_compare (const Container &cont, const std::string &string)
+{
+  std::set<Shape> a, b;
+
+  Container cs;
+  tl::Extractor ex (string.c_str ());
+  ex.read (cs);
+
+  for (typename Container::const_iterator i = cont.begin (); !i.at_end (); ++i) {
+    a.insert (*i);
+  }
+
+  for (typename Container::const_iterator i = cs.begin (); !i.at_end (); ++i) {
+    b.insert (*i);
+  }
+
+  if (a != b) {
+
+    tl::error << "Compare details:";
+    tl::error << "  a = '" << cont.to_string () << "'";
+    tl::error << "  b = '" << cs.to_string () << "'";
+    tl::error << "In list a, but not in b:";
+    for (typename std::set<Shape>::const_iterator i = a.begin (); i != a.end (); ++i) {
+      if (b.find (*i) == b.end ()) {
+        tl::error << "  " << i->to_string ();
+      }
+    }
+    tl::error << "In list b, but not in a:";
+    for (typename std::set<Shape>::const_iterator i = b.begin (); i != b.end (); ++i) {
+      if (a.find (*i) == a.end ()) {
+        tl::error << "  " << i->to_string ();
+      }
+    }
+
+    return false;
+
+  } else {
+    return true;
+  }
+}
+
+/**
+ *  @brief Convenient compare of region vs. string
+ */
+bool compare (const db::Region &region, const std::string &string)
+{
+  return do_compare<db::Region, db::Polygon> (region, string);
+}
+
+/**
+ *  @brief Convenient compare of edges vs. string
+ */
+bool compare (const db::Edges &edges, const std::string &string)
+{
+  return do_compare<db::Edges, db::Edge> (edges, string);
+}
+
+/**
+ *  @brief Convenient compare of edge pairs vs. string
+ */
+bool compare (const db::EdgePairs &edge_pairs, const std::string &string)
+{
+  return do_compare<db::EdgePairs, db::EdgePair> (edge_pairs, string);
+}
+
+/**
+ *  @brief Convenient compare of texts vs. string
+ */
+bool compare (const db::Texts &texts, const std::string &string)
+{
+  return do_compare<db::Texts, db::Text> (texts, string);
+}
+
+/**
+ *  @brief Convenient compare of box vs. string
+ */
+bool compare (const db::Box &box, const std::string &string)
+{
+  return box.to_string () == string;
+}
 
 }

src/db/db/dbTestSupport.h

@@ -25,6 +25,7 @@
 
 #include "dbCommon.h"
 #include "dbTypes.h"
+#include "dbBox.h"
 
 #include <string>
 
@@ -40,6 +41,10 @@ class Layout;
 class Cell;
 class LayerMap;
 class Netlist;
+class Region;
+class EdgePairs;
+class Edges;
+class Texts;
 
 /**
  *  @brief Specifies the normalization mode for compare_layouts
@@ -84,6 +89,31 @@ void DB_PUBLIC compare_netlist (tl::TestBase *_this, const db::Netlist &netlist,
  */
 void DB_PUBLIC compare_netlist (tl::TestBase *_this, const db::Netlist &netlist, const db::Netlist &netlist_au, bool exact_parameter_match = false);
 
+/**
+ *  @brief Convenient compare of region vs. string
+ */
+bool DB_PUBLIC compare (const db::Region &region, const std::string &string);
+
+/**
+ *  @brief Convenient compare of edges vs. string
+ */
+bool DB_PUBLIC compare (const db::Edges &edges, const std::string &string);
+
+/**
+ *  @brief Convenient compare of edge pairs vs. string
+ */
+bool DB_PUBLIC compare (const db::EdgePairs &edge_pairs, const std::string &string);
+
+/**
+ *  @brief Convenient compare of texts vs. string
+ */
+bool DB_PUBLIC compare (const db::Texts &texts, const std::string &string);
+
+/**
+ *  @brief Convenient compare of box vs. string
+ */
+bool DB_PUBLIC compare (const db::Box &box, const std::string &string);
+
 }
 
 #endif

src/db/db/dbTexts.cc

@@ -194,6 +194,9 @@ namespace tl
   {
     db::Text ep;
 
+    if (ex.at_end ()) {
+      return true;
+    }
     if (! ex.try_read (ep)) {
       return false;
     }