Merge #4980 'Support legacy :ruby commands'.

test/functional/provider/ruby_spec.lua

@@ -0,0 +1,96 @@
+local helpers = require('test.functional.helpers')(after_each)
+
+local eq = helpers.eq
+local feed = helpers.feed
+local clear = helpers.clear
+local funcs = helpers.funcs
+local meths = helpers.meths
+local insert = helpers.insert
+local expect = helpers.expect
+local command = helpers.command
+local write_file = helpers.write_file
+local curbufmeths = helpers.curbufmeths
+
+do
+  clear()
+  command('let g:prog = provider#ruby#Detect()')
+  local prog = meths.get_var('prog')
+
+  if prog == '' then
+    pending(
+      "Cannot find the neovim RubyGem. Try :CheckHealth",
+      function() end)
+    return
+  end
+end
+
+before_each(function()
+  clear()
+end)
+
+describe('ruby feature test', function()
+  it('works', function()
+    eq(1, funcs.has('ruby'))
+  end)
+end)
+
+describe(':ruby command', function()
+  it('evaluates ruby', function()
+    command('ruby VIM.command("let g:set_by_ruby = [100, 0]")')
+    eq({100, 0}, meths.get_var('set_by_ruby'))
+  end)
+
+  it('supports nesting', function()
+    command([[ruby VIM.command('ruby VIM.command("let set_by_nested_ruby = 555")')]])
+    eq(555, meths.get_var('set_by_nested_ruby'))
+  end)
+end)
+
+describe(':rubyfile command', function()
+  it('evaluates a ruby file', function()
+    local fname = 'rubyfile.rb'
+    write_file(fname, 'VIM.command("let set_by_rubyfile = 123")')
+    command('rubyfile rubyfile.rb')
+    eq(123, meths.get_var('set_by_rubyfile'))
+    os.remove(fname)
+  end)
+end)
+
+describe(':rubydo command', function()
+  it('exposes the $_ variable for modifying lines', function()
+    insert('abc\ndef\nghi\njkl')
+    expect([[
+      abc
+      def
+      ghi
+      jkl]])
+
+    feed('ggjvj:rubydo $_.upcase!<CR>')
+    expect([[
+      abc
+      DEF
+      GHI
+      jkl]])
+  end)
+
+  it('operates on all lines when not given a range', function()
+    insert('abc\ndef\nghi\njkl')
+    expect([[
+      abc
+      def
+      ghi
+      jkl]])
+
+    feed(':rubydo $_.upcase!<CR>')
+    expect([[
+      ABC
+      DEF
+      GHI
+      JKL]])
+  end)
+
+  it('does not modify the buffer if no changes are made', function()
+    command('normal :rubydo 42')
+    eq(false, curbufmeths.get_option('modified'))
+  end)
+end)