Make the SimpleExecutor rescue exceptions in the executing Checks

lib/system_check/simple_executor.rb

@@ -75,6 +75,8 @@ module SystemCheck
 
         check.show_error
       end
+    rescue StandardError => e
+      $stdout.puts "Exception: #{e.message}".color(:red)
     end
 
     private

spec/lib/system_check/simple_executor_spec.rb

@@ -75,6 +75,15 @@ describe SystemCheck::SimpleExecutor, lib: true do
     end
   end
 
+  class BugousCheck < SystemCheck::BaseCheck
+    CustomError = Class.new(StandardError)
+    set_name 'my bugous check'
+
+    def check?
+      raise CustomError, 'omg'
+    end
+  end
+
   describe '#component' do
     it 'returns stored component name' do
       expect(subject.component).to eq('Test')
@@ -138,14 +147,14 @@ describe SystemCheck::SimpleExecutor, lib: true do
     context 'when check pass' do
       it 'prints yes' do
         expect_any_instance_of(SimpleCheck).to receive(:check?).and_call_original
-        expect { subject.run_check(SimpleCheck) }.to output(/ \.\.\. yes/).to_stdout
+        expect { subject.run_check(SimpleCheck) }.to output(/ \.\.\. \e\[32myes/).to_stdout
       end
     end
 
     context 'when check fails' do
       it 'prints no' do
         expect_any_instance_of(OtherCheck).to receive(:check?).and_call_original
-        expect { subject.run_check(OtherCheck) }.to output(/ \.\.\. no/).to_stdout
+        expect { subject.run_check(OtherCheck) }.to output(/ \.\.\. \e\[31mno/).to_stdout
       end
 
       it 'displays error message from #show_error' do
@@ -219,5 +228,11 @@ describe SystemCheck::SimpleExecutor, lib: true do
         end
       end
     end
+
+    context 'when there is an exception' do
+      it 'rescues the exception' do
+        expect{ subject.run_check(BugousCheck) }.not_to raise_exception
+      end
+    end
   end
 end