Add Options#to_s help string

2 files changed, 32 insertions, 0 deletions

diff --git a/test/option_test.rb b/test/option_test.rb
new file mode 100644
index 0000000..606264e
--- /dev/null
+++ b/test/option_test.rb
@@ -0,0 +1,14 @@
+require 'test_helper'
+
+describe Slop::Option do
+  def option(*args)
+    Slop::Option.new(*args)
+  end
+
+  describe "#flag" do
+    it "returns the flags joined by a comma" do
+      assert_equal "-f, --bar", option(%w(-f --bar), nil).flag
+      assert_equal "--bar", option(%w(--bar), nil).flag
+    end
+  end
+end
diff --git a/test/options_test.rb b/test/options_test.rb
index 97c45d9..3ce0863 100644
--- a/test/options_test.rb
+++ b/test/options_test.rb
@@ -53,4 +53,22 @@ describe Slop::Options do
       assert @options.respond_to?(:bar)
     end
   end
+
+  describe "#to_s" do
+    it "is prefixed with the banner" do
+      assert_match(/^usage/, @options.to_s)
+    end
+
+    it "aligns option strings" do
+      @options.add "-f", "--foo", "fooey"
+      @options.add "-s", "short"
+      assert_match(/^    -f, --foo  fooey/, @options.to_s)
+      assert_match(/^    -s         short/, @options.to_s)
+    end
+
+    it "can use a custom prefix" do
+      @options.add "-f", "--foo"
+      assert_match(/^ -f, --foo/, @options.to_s(prefix: " "))
+    end
+  end
 end