move expect.lua from internal/ to test_util/

ci/test.lua

@@ -1,7 +1,7 @@
 -- DFHack developer test harness
 --@ module = true
 
-local expect = require 'internal.expect'
+local expect = require 'test_util.expect'
 local json = require 'json'
 local script = require 'gui.script'
 local utils = require 'utils'

library/lua/test_util/expect.lua

@@ -5,7 +5,7 @@
 -- these functions directly will not work as expected.
 
 
-local expect = mkmodule('internal.expect')
+local expect = mkmodule('test_util.expect')
 
 function expect.true_(value, comment)
     return not not value, comment, 'expected true, got ' .. tostring(value)

test/library/test_util/expect_unit.lua

@@ -1,4 +1,4 @@
-local expect_raw = require('internal.expect')
+local expect_raw = require('test_util.expect')
 
 function test.table_eq()
     expect.true_(expect_raw.table_eq({}, {}))