fix Rect and add tests

test/test_rect.rb

@@ -0,0 +1,86 @@
+#!/usr/bin/env ruby
+# -*- mode: ruby; coding: utf-8 -*-
+require 'test/unit'
+require 'opencv'
+require File.expand_path(File.dirname(__FILE__)) + '/helper'
+
+include OpenCV
+
+# Tests for OpenCV::Rect
+class TestRect < OpenCVTestCase
+  def test_x
+    rect = Rect.new
+    rect.x = 100
+    assert_equal(100, rect.x)
+    rect.x = 200
+    assert_equal(200, rect.x)
+  end
+
+  def test_y
+    rect = Rect.new
+    rect.y = 100
+    assert_equal(100, rect.y)
+    rect.y = 200
+    assert_equal(200, rect.y)
+  end
+
+  def test_width
+    rect = Rect.new
+    rect.width = 100
+    assert_equal(100, rect.width)
+    rect.width = 200
+    assert_equal(200, rect.width)
+  end
+
+  def test_height
+    rect = Rect.new
+    rect.height = 100
+    assert_equal(100, rect.height)
+    rect.height = 200
+    assert_equal(200, rect.height)
+  end
+
+  def test_initialize
+    rect = Rect.new
+    assert_equal(0, rect.x)
+    assert_equal(0, rect.y)
+    assert_equal(0, rect.width)
+    assert_equal(0, rect.height)
+
+    rect = Rect.new(10, 20, 30, 40)
+    assert_equal(10, rect.x)
+    assert_equal(20, rect.y)
+    assert_equal(30, rect.width)
+    assert_equal(40, rect.height)
+
+    assert_raise(TypeError) {
+      Rect.new(DUMMY_OBJ, 1, 1, 1)
+    }
+    assert_raise(TypeError) {
+      Rect.new(1, DUMMY_OBJ, 1, 1)
+    }
+    assert_raise(TypeError) {
+      Rect.new(1, 1, DUMMY_OBJ, 1)
+    }
+    assert_raise(TypeError) {
+      Rect.new(1, 1, 1, DUMMY_OBJ)
+    }
+    assert_raise(ArgumentError) {
+      Rect.new(1)
+    }
+    assert_raise(ArgumentError) {
+      Rect.new(1, 2)
+    }
+    assert_raise(ArgumentError) {
+      Rect.new(1, 2, 3)
+    }
+    assert_raise(ArgumentError) {
+      Rect.new(1, 2, 3, 4, 5)
+    }
+  end
+
+  def test_to_s
+    rect = Rect.new(1, 2, 3, 4)
+    assert_equal('#<OpenCV::Rect:[3 x 4 from (1, 2)]>', rect.to_s)
+  end
+end