create rspec environment for build tests

.gitignore

@@ -15,3 +15,4 @@ spec/reports
 test/tmp
 test/version_tmp
 tmp
+build_tests_run

.rspec

@@ -0,0 +1,2 @@
+--color
+--require spec_helper

Rakefile

@@ -1,5 +1,15 @@
+require "bundler"
+begin
+  Bundler.setup(:default, :development)
+rescue Bundler::BundlerError => e
+  raise LoadError.new("Unable to setup Bundler; you might need to `bundle install`: #{e.message}")
+end
+
 require "bundler/gem_tasks"
 require "rspec/core/rake_task"
+require "rake/clean"
+
+CLEAN.include 'build_tests_run'
 
 RSpec::Core::RakeTask.new(:spec)
 

build_tests/simple/build.rb

@@ -0,0 +1,3 @@
+Rscons::Environment.new do |env|
+  env.Program('simple', Dir['*.c'])
+end

build_tests/simple/simple.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+    printf("This is a simple C program\n");
+}

rscons.gemspec

@@ -16,4 +16,13 @@ Gem::Specification.new do |gem|
   gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = ["lib"]
+
+  gem.add_development_dependency "rspec-core"
+  gem.add_development_dependency "rspec-mocks"
+  gem.add_development_dependency "rspec-expectations"
+  gem.add_development_dependency "rspec"
+  gem.add_development_dependency "rake"
+  gem.add_development_dependency "simplecov"
+  gem.add_development_dependency "json"
+  gem.add_development_dependency 'rdoc'
 end

spec/build_tests_spec.rb

@@ -0,0 +1,30 @@
+require 'fileutils'
+
+describe Rscons do
+  before(:all) do
+    FileUtils.rm_rf('build_tests_run')
+    FileUtils.cp_r('build_tests', 'build_tests_run')
+    @owd = Dir.pwd
+  end
+
+  after(:each) do
+    Dir.chdir(@owd)
+  end
+
+  def test_dir(build_test_directory)
+    Dir.chdir("build_tests_run/#{build_test_directory}")
+    if File.exists?('build.rb')
+      system('ruby build.rb')
+    end
+  end
+
+  ###########################################################################
+  # Tests
+  ###########################################################################
+
+  it 'builds a C program with one source file' do
+    test_dir('simple')
+    File.exists?('simple.o').should be_true
+    `./simple`.should == "This is a simple C program\n"
+  end
+end