handle exceptions in tests and reduce syntax features in assert code

test/t/_assert.rb

 $ok_test = 0
 $ko_test = 0
+$kill_test = 0
 $asserts  = []
+$exceptions = []
+
+##
+# Print the assertion in a readable way
+def print_assertion_string(str, iso)
+  print(str)
+  if(iso != '')
+    print(' [')
+    print(iso)
+    print(']')
+  end
+end
 
 ##
 # Verify a code block.
@@ -11,13 +24,18 @@ $asserts  = []
 #       which will be tested by this
 #       assertion
 def assert(str = 'Assertion failed', iso = '')
+  begin
     if(!yield)
       $asserts.push([str, iso])
       $ko_test += 1
-    print "F"
+      print('F')
     else
       $ok_test += 1
-    print "."
+      print('.')
+    end
+  rescue
+    $kill_test += 1
+    print('X')
   end
 end
 
@@ -27,18 +45,23 @@ end
 def report()
   print "\n"
   $asserts.each do |str, iso|
-    print("Test Failed: #{str} [#{iso}]\n");
+    print('Fail: ');
+    print_assertion_string(str, iso)
+    print("\n")
   end
 
-  $total_test = $ok_test + $ko_test
-  print 'Total tests:'
-  print $total_test
-  print "\n"
+  $total_test = $ok_test.+($ko_test)
+  print('Total: ')
+  print($total_test)
+  print("\n")
 
-  print '  OK: '
-  print $ok_test
-  print "\n"
-  print '  KO: '
-  print $ko_test
-  print "\n"
+  print('  OK: ')
+  print($ok_test)
+  print("\n")
+  print('  KO: ')
+  print($ko_test)
+  print("\n")
+  print('  Crash: ')
+  print($kill_test)
+  print("\n")
 end