modified CvError to handle errors

test/test_cverror.rb

@@ -0,0 +1,50 @@
+#!/usr/bin/env ruby
+# -*- mode: ruby; coding: utf-8-unix -*- 
+require 'test/unit'
+require 'opencv'
+require File.expand_path(File.dirname(__FILE__)) + '/helper'
+
+include OpenCV
+
+# Tests for OpenCV::CvError
+class TestCvError < OpenCVTestCase
+  def test_cverror
+    assert_equal(StandardError, CvError.superclass)
+    begin
+      raise CvError
+    rescue
+      assert_equal(CvError, $!.class)
+    end
+  end
+  
+  def test_subclass
+    errors = [CvStsOk, CvStsBackTrace, CvStsError, CvStsInternal, CvStsNoMem, CvStsBadArg, CvStsBadFunc, CvStsNoConv, CvStsAutoTrace, CvHeaderIsNull, CvBadImageSize, CvBadOffset, CvBadDataPtr, CvBadStep, CvBadModelOrChSeq, CvBadNumChannels, CvBadNumChannel1U, CvBadDepth, CvBadAlphaChannel, CvBadOrder, CvBadOrigin, CvBadAlign, CvBadCallBack, CvBadTileSize, CvBadCOI, CvBadROISize, CvMaskIsTiled, CvStsNullPtr, CvStsVecLengthErr, CvStsFilterStructContentErr, CvStsKernelStructContentErr, CvStsFilterOffsetErr, CvStsBadSize, CvStsDivByZero, CvStsInplaceNotSupported, CvStsObjectNotFound, CvStsUnmatchedFormats, CvStsBadFlag, CvStsBadPoint, CvStsBadMask, CvStsUnmatchedSizes, CvStsUnsupportedFormat, CvStsOutOfRange, CvStsParseError, CvStsNotImplemented, CvStsBadMemBlock, CvStsAssert, CvGpuNotSupported, CvGpuApiCallError, CvGpuNppCallError, CvGpuCufftCallError]
+
+    errors.each { |err|
+      assert_equal(CvError, err.superclass)
+
+      begin
+        raise err
+      rescue err
+        assert_equal(err, $!.class)
+      rescue
+        flunk("Failed to catch #{err}")
+      end
+
+      begin
+        raise err
+      rescue CvError
+        assert_equal(err, $!.class)
+      rescue
+        flunk("Failed to catch #{err}")
+      end
+
+      begin
+        raise err
+      rescue
+        assert_equal(err, $!.class)
+      end
+    }
+  end
+end
+