1 files changed, 73 insertions, 0 deletions
diff --git a/server/test/references/init.lua b/server/test/references/init.lua
new file mode 100644
index 00000000..2699fb70
--- /dev/null
+++ b/server/test/references/init.lua
@@ -0,0 +1,73 @@
+local core = require 'core'
+local parser  = require 'parser'
+local buildVM = require 'vm'
+
+local function catch_target(script)
+    local list = {}
+    local cur = 1
+    while true do
+        local start, finish  = script:find('<[!?].-[!?]>', cur)
+        if not start then
+            break
+        end
+        list[#list+1] = { start + 2, finish - 2 }
+        cur = finish + 1
+    end
+    return list
+end
+
+local function founded(targets, results)
+    if #targets ~= #results then
+        return false
+    end
+    for _, target in ipairs(targets) do
+        for _, result in ipairs(results) do
+            if target[1] == result[1] and target[2] == result[2] then
+                goto NEXT
+            end
+        end
+        do return false end
+        ::NEXT::
+    end
+    return true
+end
+
+function TEST(script)
+    local target = catch_target(script)
+    local start  = script:find('<?', 1, true)
+    local finish = script:find('?>', 1, true)
+    local pos = (start + finish) // 2 + 1
+    local new_script = script:gsub('<[!?]', '  '):gsub('[!?]>', '  ')
+    local ast = parser:ast(new_script)
+    assert(ast)
+    local vm = buildVM(ast)
+    assert(vm)
+
+    local positions = core.references(vm, pos, true)
+    if positions then
+        assert(founded(target, positions))
+    else
+        assert(#target == 0)
+    end
+end
+
+TEST [[
+local <!a!> = 1
+<?a?> = <?a?>
+]]
+
+TEST [[
+t.<!a!> = 1
+t.<?a?> = t.<?a?>
+]]
+
+TEST [[
+:: <!LABEL!> ::
+goto <?LABEL?>
+]]
+
+TEST [[
+local a = 1
+local <!a!> = 1
+<?a?> = <?a?>
+]]