mri_spec/cli_spec.rb in opal-0.4.4 vs mri_spec/cli_spec.rb in opal-0.5.0

@@ -1,18 +1,79 @@
 require File.expand_path('../spec_helper', __FILE__)
 require 'opal/cli'
 require 'stringio'
 
 describe Opal::CLI do
-  let(:output) { StringIO.new }
+  let(:fake_stdout) { StringIO.new }
+  let(:file)    { File.expand_path('../fixtures/opal_file.rb', __FILE__) }
+  let(:options) { nil }
+  subject(:cli) { described_class.new(options) }
 
   context 'with a file' do
-    let(:file) { File.expand_path('../fixtures/opal_file.rb', __FILE__) }
-    subject(:cli) { described_class.new(file, :output => output) }
+    let(:options) { {:filename => file} }
 
     it 'runs the file' do
-      cli.run
-      output.rewind
-      expect(output.read).to eq("hi from opal!\n")
+      expect_output_of{ subject.run }.to eq("hi from opal!\n")
     end
+  end
+
+  describe ':evals option' do
+    context 'without evals and paths' do
+      it 'raises ArgumentError' do
+        expect { subject.run }.to raise_error(ArgumentError)
+      end
+    end
+
+    context 'with one eval' do
+      let(:options) { {:evals => ['puts "hello"']} }
+
+      it 'executes the code' do
+        expect_output_of{ subject.run }.to eq("hello\n")
+      end
+    end
+
+    context 'with many evals' do
+      let(:options) { {:evals => ['puts "hello"', 'puts "ciao"']} }
+
+      it 'executes the code' do
+        expect_output_of{ subject.run }.to eq("hello\nciao\n")
+      end
+    end
+  end
+
+  describe ':requires options' do
+    context 'with an absolute path' do
+      let(:options) { {:requires => [file], :evals => ['']} }
+      it 'requires the file' do
+        expect_output_of{ subject.run }.to eq("hi from opal!\n")
+      end
+    end
+
+    context 'with a path relative to a load path' do
+      let(:dir)      { File.dirname(file) }
+      let(:filename) { File.basename(file) }
+      let(:options)  { {:load_paths => [dir], :requires => [filename], :evals => ['']} }
+      it 'requires the file' do
+        expect_output_of{ subject.run }.to eq("hi from opal!\n")
+      end
+    end
+  end
+
+  describe ':load_paths options' do
+    let(:dir)      { File.dirname(file) }
+    let(:filename) { File.basename(file) }
+    let(:options)  { {:load_paths => [dir], :requires => [filename], :evals => ['']} }
+    it 'requires files' do
+      expect_output_of{ subject.run }.to eq("hi from opal!\n")
+    end
+  end
+
+  def expect_output_of
+    stdout = described_class.stdout
+    described_class.stdout = fake_stdout
+    yield
+    @output = fake_stdout.tap(&:rewind).read
+    expect(@output)
+  ensure
+    described_class.stdout = stdout
   end
 end