diff --git a/rubygem-i18n.spec b/rubygem-i18n.spec
index bc4bfb8..7890cd8 100644
--- a/rubygem-i18n.spec
+++ b/rubygem-i18n.spec
@@ -2,6 +2,8 @@
 %global gemname i18n
 %global geminstdir %{gemdir}/gems/%{gemname}-%{version}
 
+%global enable_check 0
+
 Summary: New wave Internationalization support for Ruby
 Name: rubygem-%{gemname}
 Version: 0.5.0
@@ -12,7 +14,13 @@ URL: http://github.com/svenfuchs/i18n
 Source0: http://rubygems.org/gems/%{gemname}-%{version}.gem
 Requires: rubygems
 Requires: ruby(abi) = 1.8
+BuildRequires: ruby(abi) = 1.8
 BuildRequires: rubygems
+%if %{enable_check} > 0
+BuildRequires: rubygem(mocha)
+# test_declarative is not available in Fedora yet.
+BuildRequires: rubygem(test_declarative)
+%endif
 BuildArch: noarch
 Provides: rubygem(%{gemname}) = %{version}
 
@@ -29,16 +37,31 @@ Requires:%{name} = %{version}-%{release}
 Documentation for %{name}
 
 %prep
+%setup -q -c -T
+mkdir -p .%{gemdir}
+gem install --local --install-dir .%{gemdir} \
+            --force --rdoc %{SOURCE0}
 
 %build
 
 %install
 mkdir -p %{buildroot}%{gemdir}
-gem install --local --install-dir %{buildroot}%{gemdir} \
-            --force --rdoc %{SOURCE0}
+cp -a .%{gemdir}/* \
+        %{buildroot}%{gemdir}/
 chmod -x %{buildroot}%{geminstdir}/MIT-LICENSE
 chmod -x %{buildroot}%{geminstdir}/lib/i18n.rb
 
+%if %{enable_check} > 0
+%check
+pushd .%{geminstdir}
+
+# Bundler just complicates everything in our case, remove it.
+sed -i -e "s|require 'bundler/setup'||" test/test_helper.rb
+
+RUBYOPT="rubygems I%{buildroot}%{geminstdir}/lib" testrb test/all.rb
+
+popd
+%endif
 
 %files
 %defattr(-, root, root, -)
@@ -62,6 +85,7 @@ chmod -x %{buildroot}%{geminstdir}/lib/i18n.rb
 - Update to i18n 0.5.0.
 - Documentation moved into subpackage.
 - Removed unnecessary cleanup.
+- Preparetion for test suite execution during build.
 
 * Wed Feb 09 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.4.2-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild