add a cool lua repl

lib/lua-repl/t/plugin-repl-tests.lua

@@ -0,0 +1,75 @@
+-- vim:foldmethod=marker
+local r = require 'repl' -- we don't call it 'repl' so we don't shadow
+                         -- repl in the plugin environment
+pcall(require, 'luarocks.loader')
+require 'Test.More'
+local utils = require 'test-utils'
+
+plan(5)
+
+local clone = r:clone()
+
+do -- basic tests {{{
+  local with_plugin = clone:clone()
+
+  function with_plugin:foo()
+  end
+
+  local line_no
+
+  local _, err = pcall(function()
+    with_plugin:loadplugin(function()
+      line_no = utils.next_line_number()
+      function repl:foo()
+      end
+    end)
+  end)
+
+  like(err, string.format("%d: The 'foo' method already exists", line_no))
+
+  with_plugin:loadplugin(function()
+    function repl:bar()
+      return 17
+    end
+  end)
+
+  is(with_plugin:bar(), 17)
+
+  with_plugin:loadplugin(function()
+    repl.baz = 18
+  end)
+
+  is(with_plugin.baz, 18)
+end -- }}}
+
+do -- conflict tests {{{
+  local clone = r:clone()
+  local line_no
+
+  clone:loadplugin(function()
+    function repl:foo()
+    end
+  end)
+
+  local _, err = pcall(function()
+    clone:loadplugin(function()
+      line_no = utils.next_line_number()
+      function repl:foo()
+      end
+    end)
+  end)
+
+  like(err, tostring(line_no) .. ": The 'foo' method already exists")
+end -- }}}
+
+do -- proxy tests {{{
+  local clone = r:clone()
+
+  clone:loadplugin(function()
+    features = 'foo'
+  end)
+
+  clone:loadplugin(function()
+    ok(repl:hasfeature 'foo')
+  end)
+end -- }}}