Rename subject tests and remove old tests

Author: engboris

test/README.md

@@ -4,7 +4,7 @@ This directory contains Cram tests for Stellogen.
 
 ## Test Files
 
-- `subjects.t` - Tests for basic syntax subjects in `test/subjects/`
+- `syntax.t` - Tests for basic syntax in `test/syntax/`
 - `examples.t` - Tests for all examples in `examples/`
 
 ## Running Tests

test/dune

@@ -1,7 +1,7 @@
-; Cram tests for Stellogen examples and subjects
+; Cram tests for Stellogen examples and syntax
 (cram
  (deps
-  (glob_files ./subjects/*.sg)
+  (glob_files ./syntax/*.sg)
   (glob_files ../examples/*.sg)
   (glob_files ../exercises/solutions/*.sg)
   (package stellogen)))

test/subjects.t

@@ -0,0 +1,11 @@
+Test syntax - basic syntax tests
+==================================
+
+Linear execution test:
+  $ sgen run syntax/linear.sg
+
+Prolog-style test:
+  $ sgen run syntax/prolog.sg
+
+Records test:
+  $ sgen run syntax/records.sg