3 files changed, 102 insertions, 3 deletions
diff --git a/stdlib/source/test/lux/tool.lux b/stdlib/source/test/lux/tool.lux
index 37e45bcee..ef83286b4 100644
--- a/stdlib/source/test/lux/tool.lux
+++ b/stdlib/source/test/lux/tool.lux
@@ -5,7 +5,7 @@
   ["[0]" / "_"
    [compiler
     ["[1][0]" arity]
-    ["[1][0]" reference/variable]
+    ["[1][0]" reference]
     ... [language
     ...  [lux
     ...   ["[1][0]" syntax]
@@ -18,7 +18,7 @@
   Test
   ($_ _.and
       /arity.test
-      /reference/variable.test
+      /reference.test
       ... /syntax.test
       ... /analysis.test
       ... /synthesis.test
diff --git a/stdlib/source/test/lux/tool/compiler/reference.lux b/stdlib/source/test/lux/tool/compiler/reference.lux
new file mode 100644
index 000000000..fd76a5146
--- /dev/null
+++ b/stdlib/source/test/lux/tool/compiler/reference.lux
@@ -0,0 +1,95 @@
+(.using
+ [library
+  [lux "*"
+   ["_" test {"+" Test}]
+   [abstract
+    [monad {"+" do}]
+    [\\specification
+     ["$[0]" equivalence]
+     ["$[0]" hash]]]
+   [data
+    ["[0]" text ("[1]#[0]" equivalence)
+     ["%" format]]]
+   [math
+    ["[0]" random {"+" Random}]
+    [number
+     ["n" nat]]]
+   [meta
+    ["[0]" symbol ("[1]#[0]" equivalence)]]]]
+ [\\library
+  ["[0]" /
+   ["[0]" variable {"+" Register}]]]
+ ["[0]" / "_"
+  ["[1][0]" variable]])
+
+(def: constant
+  (Random /.Constant)
+  ($_ random.and
+      (random.ascii/upper 5)
+      (random.ascii/lower 5)
+      ))
+
+(def: .public random
+  (Random /.Reference)
+  ($_ random.or
+      /variable.random
+      ..constant
+      ))
+
+(def: .public test
+  Test
+  (<| (_.covering /._)
+      (_.for [/.Reference /.Constant])
+      (do random.monad
+        [expected_register random.nat
+         expected_constant ..constant])
+      (`` ($_ _.and
+              (_.for [/.equivalence]
+                     ($equivalence.spec /.equivalence ..random))
+              (_.for [/.hash]
+                     ($hash.spec /.hash ..random))
+
+              (~~ (template [<tag>]
+                    [(_.cover [<tag>]
+                              (case (<tag> expected_register)
+                                (^ (<tag> actual_register))
+                                (n.= expected_register actual_register)
+
+                                _
+                                false))]
+
+                    [/.local]
+                    [/.foreign]
+                    ))
+
+              (_.cover [/.variable /.self]
+                       (and (# /.equivalence = (/.self) (/.variable (variable.self)))
+                            (case (/.self)
+                              (^ (/.self))
+                              true
+                              
+                              _
+                              false)
+                            (case (/.variable (variable.self))
+                              (^ (/.self))
+                              true
+                              
+                              _
+                              false)))
+              (_.cover [/.constant]
+                       (case (/.constant expected_constant)
+                         (^ (/.constant actual_constant))
+                         (symbol#= expected_constant actual_constant)
+
+                         _
+                         false))
+              (_.cover [/.format]
+                       (and (text#= (/.format (/.local expected_register))
+                                    (variable.format {variable.#Local expected_register}))
+                            (text#= (/.format (/.foreign expected_register))
+                                    (variable.format {variable.#Foreign expected_register}))
+                            (text#= (/.format (/.constant expected_constant))
+                                    (%.symbol expected_constant))))
+              
+              /variable.test
+              ))))
diff --git a/stdlib/source/test/lux/tool/compiler/reference/variable.lux b/stdlib/source/test/lux/tool/compiler/reference/variable.lux
index 980a280f0..15d0997e4 100644
--- a/stdlib/source/test/lux/tool/compiler/reference/variable.lux
+++ b/stdlib/source/test/lux/tool/compiler/reference/variable.lux
@@ -32,7 +32,11 @@
                    ($equivalence.spec /.equivalence ..random))
             (_.for [/.hash]
                    ($hash.spec /.hash ..random))
-            (_.cover [/.self /.self?]
+            (_.cover [/.self]
+                     (case (/.self)
+                       (^ (/.self)) true
+                       _ false))
+            (_.cover [/.self?]
                      (/.self? (/.self)))
             (_.for [/.Register]
                    (_.cover [/.format]