Added test file for Erlang.

tests/syntax-tests/source/Erlang/bat_erlang.erl

@@ -0,0 +1,72 @@
+-module(bat_erlang).
+
+-export([main/0]).
+
+-record(test, {
+    name :: list(),
+    data :: binary()
+}).
+
+-define(TESTMACRO, "testmacro").
+
+-spec main() -> ok.
+main() ->
+    %% Handling Lists and Numbers
+    List = [1, 2, 3, 4, $6, 2#00111],
+    _Sum = lists:sum(List),
+    _ = [(N * N) + N / N - N || N <- List, N > 2],
+    [_Head, _SecondHead | _Tail] = List,
+    _ = [1, atom, [list], <<"binary">>, {tuple, tuple}, #{map => key}, #test{name = "record"}],
+
+    %% Handling Binaries 
+    BinHelloWorld = <<"Hello World">>,
+    <<X || <<X:1/binary>> <= BinHelloWorld >>,
+    <<0,0,0,0,0,0,0,151>> = <<151:64/signed-integer>>,
+
+    %% Handling Boolean and Atoms
+    true = true andalso true,
+    true = false orelse true,
+    _ = true =:= true,
+    _ = false =/= true,
+    _ = 'HELLO' /= hello,
+    _ = hello == world,
+
+    %% Handling Maps and Records
+    TestMap = #{a => 1, b => 2, c => 3},
+    #{a := _Value, c := _} = TestMap,
+    _ = TestMap#{d => 4},
+    Record = #test{name = ?TESTMACRO},
+    _ = Record#test.name,
+
+    %% Conditionals
+    case TestMap of
+        #{b := B} ->
+            B;
+        _ ->
+            ok
+    end,
+    if
+        erlang:is_map(TestMap) ->
+            map;
+        true ->
+            test_function(1)
+    end,
+
+    %% Messaging
+    Self = erlang:self(),
+    Self ! hello_world,
+    receive
+        hello_world ->
+            ok;
+        _ ->
+            io:format("unknown message")
+    after 1000 ->
+        timeout
+    end,
+    ok.
+
+test_function(N) when erlang:is_integer(N) -> integer;
+test_function([_|_]) -> list;
+test_function(<<_/binary>>) ->  binary;
+test_function(_) ->
+    undefined.