old_contents: from conans import ConanFile, CMake
  import os
  
  class MyTestConan(ConanFile):
      settings = "os", "compiler", "build_type", "arch"
      requires = "OpenCV/3.3.0-4@ohhi/stable"
      generators = "cmake", "txt"
  
      def imports(self):
            self.copy("*.dll", dst="bin", src="bin")
  
      def build(self):
          cmake = CMake(self)
          cmake.configure()
          cmake.build(build_dir=".")
      def test(self):
          self.run(os.path.join(".","bin", "mytest"))
  
new_contents: from conans import ConanFile, CMake
  import os
  
  class MyTestConan(ConanFile):
      settings = "os", "compiler", "build_type", "arch"
      requires = "OpenCV/3.4.0-0@ohhi/stable"
      generators = "cmake", "txt"
  
      def imports(self):
            self.copy("*.dll", dst="bin", src="bin")
  
      def build(self):
          cmake = CMake(self)
          cmake.configure()
          cmake.build(build_dir=".")
      def test(self):
          self.run(os.path.join(".","bin", "mytest"))
  
subject: Fix test_package version number