1 files changed, 64 insertions, 0 deletions
diff --git a/spec/ruby/library/getoptlong/shared/get.rb b/spec/ruby/library/getoptlong/shared/get.rb
new file mode 100644
index 0000000000..91a0fbaacc
--- /dev/null
+++ b/spec/ruby/library/getoptlong/shared/get.rb
@@ -0,0 +1,64 @@
+describe :getoptlong_get, shared: true do
+  before :each do
+    @opts = GetoptLong.new(
+      [ '--size', '-s',             GetoptLong::REQUIRED_ARGUMENT ],
+      [ '--verbose', '-v',          GetoptLong::NO_ARGUMENT ],
+      [ '--query', '-q',            GetoptLong::NO_ARGUMENT ],
+      [ '--check', '--valid', '-c', GetoptLong::NO_ARGUMENT ]
+    )
+    @opts.quiet = true # silence using $deferr
+  end
+
+  it "returns the next option name and its argument as an Array" do
+    argv [ "--size", "10k", "-v", "-q", "a.txt", "b.txt" ] do
+      @opts.send(@method).should == [ "--size", "10k" ]
+      @opts.send(@method).should == [ "--verbose", "" ]
+      @opts.send(@method).should == [ "--query", ""]
+      @opts.send(@method).should == nil
+    end
+  end
+
+  it "shifts ARGV on each call" do
+    argv [ "--size", "10k", "-v", "-q", "a.txt", "b.txt" ] do
+      @opts.send(@method)
+      ARGV.should == [ "-v", "-q", "a.txt", "b.txt" ]
+
+      @opts.send(@method)
+      ARGV.should == [ "-q", "a.txt", "b.txt" ]
+
+      @opts.send(@method)
+      ARGV.should == [ "a.txt", "b.txt" ]
+
+      @opts.send(@method)
+      ARGV.should == [ "a.txt", "b.txt" ]
+    end
+  end
+
+  it "terminates processing when encountering '--'" do
+    argv [ "--size", "10k", "--", "-v", "-q", "a.txt", "b.txt" ] do
+      @opts.send(@method)
+      ARGV.should == ["--", "-v", "-q", "a.txt", "b.txt"]
+
+      @opts.send(@method)
+      ARGV.should ==  ["-v", "-q", "a.txt", "b.txt"]
+
+      @opts.send(@method)
+      ARGV.should ==  ["-v", "-q", "a.txt", "b.txt"]
+    end
+  end
+
+  it "raises a if an argument was required, but none given" do
+    argv [ "--size" ] do
+      lambda { @opts.send(@method) }.should raise_error(GetoptLong::MissingArgument)
+    end
+  end
+
+  ruby_version_is "2.5" do
+    # https://bugs.ruby-lang.org/issues/13858
+    it "returns multiline argument" do
+      argv [ "--size=\n10k\n" ] do
+        @opts.send(@method).should == [ "--size", "\n10k\n" ]
+      end
+    end
+  end
+end