test: add dsl tests

test/resource/dsl_test.rb

@@ -0,0 +1,45 @@
+# encoding: utf-8
+# author: Dominik Richter
+# author: Christoph Hartmann
+
+describe command('echo hello') do
+  its(:stdout) { should eq "hello\n" }
+end
+
+describe 'describe + it + expect' do
+  it 'should echo something' do
+	  out = rand.to_s
+		expect(command("echo -n #{out}").stdout).to eq(out)
+  end
+end
+
+describe 'describe and expect without it' do
+  it 'will raise an error' do
+    expect(proc{
+      describe rand.to_s do
+  	    expect(true).to eq(true)
+      end
+    }).to raise_error StandardError
+  end
+end
+
+rule 'rule + describe' do
+  out = rand.to_s
+  describe command("echo -n #{out}") do
+    its('stdout') { should eq out }
+  end
+end
+
+rule 'rule + describe + it + expect' do
+  out = rand.to_s
+  describe 'a rule' do
+    it 'must echo something' do
+      expect(command("echo -n #{out}").stdout).to eq(out)
+    end
+  end
+end
+
+rule 'rule + expect only' do
+  out = rand.to_s
+  expect(command("echo -n #{out}").stdout).to eq(out)
+end