Some tests

src/lib/ast.ml

···
       (a, None)
 
 and separator_op : CST.separator_op -> separator = function
-  | CST.SeparatorOp_Uppersand -> Uppersand
+  | CST.SeparatorOp_Uppersand -> Ampersand
   | CST.SeparatorOp_Semicolon -> Semicolon
 
 and clist : CST.clist -> clist =

src/lib/eval.ml

···
    then redirection is setup, and finally functions/built-ins/commands are
    executed. *)
 
-  let word_component_to_string : Ast.word_component -> string = function
+  let rec word_component_to_string : Ast.word_component -> string = function
     | WordName s -> s
     | WordLiteral s -> s
+    | WordDoubleQuoted s ->
+        String.concat " " (List.map word_component_to_string s)
     | v ->
         Fmt.failwith "Conversion of %a" Yojson.Safe.pp
           (Ast.word_component_to_yojson v)
···
                 | _ ->
                     let f, p = pipeline p in
                     f @@ execute_command p)
+            | Noand_or, Nlist.Singleton (p, _) ->
+                let f, p = pipeline p in
+                f @@ execute_command p
             | Noand_or, Nlist.Cons ((p, next_sep), rest) ->
                 let f, p = pipeline p in
                 fold (next_sep, f (execute_command p)) rest
···
                 | None | Some _ ->
                     let f, p = pipeline p in
                     fold (next_sep, f (execute_command p)) rest)
-            | _ -> assert false
           in
           fold (Noand_or, None) c
       | _ -> Fmt.failwith "TODO!!!"

src/lib/sast.ml

···
   | IoHere_DLessDash_HereEnd of here_end * word
 
 and here_end = HereEnd_Word of word
-and separator = Uppersand | Semicolon | Nosep
+and separator = Ampersand | Semicolon | Nosep
 and sequential_sep = Semicolon | Newline
 and word = word_cst
 and word_cst = word_component list

test.sh

···
-ls -jshjk || echo hello && ls =whkjed
+echo one; (sleep 1; echo two) & echo three

test/dune

···
+(cram
+ (package osh)
+ (deps %{bin:osh}))
+
 (test
  (name test_merry)
  (libraries eio morbig))

test/simple.t

···
+A series of simple shell scripting tests for osh.
+
+1. Variables and Parameters
+
+1.1 Variable Subtitution
+
+  $ cat >test.sh <<EOF
+  > P="hello world"
+  > echo \$P
+  > EOF
+
+  $ osh test.sh
+  hello world
+
+2. Pipelines with And|Or
+
+2.1 Simple Or 
+
+  $ cat >test.sh <<EOF
+  > sh -c "exit 1" || echo hello
+  > EOF
+
+  $ osh test.sh
+  hello
+
+2.2 Simple And
+
+  $ cat >test.sh <<EOF
+  > sh -c "exit 1" && echo hello
+  > EOF
+
+  $ osh test.sh
+  [1]
+
+2.3 Simple And and Or
+
+  $ cat >test.sh <<EOF
+  > echo first || sh -c "echo never && exit 1" && echo second
+  > EOF
+
+  $ osh test.sh
+  first
+  second
+
+
+