Fix exception classes in estdlib

Replace all erroneous uses of throw with calls to `error/1`.
Also update etest to properly test for exception classes, thus asserting the
compatibility with Erlang/OTP
Also remove duplicate etest.hrl header

Signed-off-by: Paul Guyot <pguyot@kallisys.net>

Author: pguyot

libs/estdlib/src/erlang.erl

@@ -319,7 +319,7 @@ apply(Module, Function, Args) ->
         [Arg1, Arg2, Arg3, Arg4, Arg5, Arg6] ->
             Module:Function(Arg1, Arg2, Arg3, Arg4, Arg5, Arg6);
         _ ->
-            throw(badarg)
+            error(badarg)
     end.
 
 %%-----------------------------------------------------------------------------
@@ -337,10 +337,9 @@ is_map(_Map) ->
 %%-----------------------------------------------------------------------------
 %% @param   Map the map
 %% @returns the size of the map
-%% @throws {badmap, Map}
 %% @doc Returns the size of (i.e., the number of entries in) the map
 %%
-%% This function throws a `{badmap, Map}' exception if `Map' is not a map.
+%% This function raises a `{badmap, Map}' error if `Map' is not a map.
 %%
 %% This function may be used in a guard expression.
 %% @end
@@ -353,11 +352,10 @@ map_size(_Map) ->
 %% @param   Key     the key to get
 %% @param   Map     the map from which to get the value
 %% @returns the value in `Map' associated with `Key', if it exists.
-%% @throws  {badkey, Key} | {badmap, Map}
 %% @doc     Get the value in `Map' associated with `Key', if it exists.
 %%
-%% This function throws a `{badkey, Key}' exception if 'Key' does not occur in `Map' or
-%% a `{badmap, Map}' if `Map' is not a map.
+%% This function raises a `{badkey, Key}' error if 'Key' does not occur in
+%% `Map' or a `{badmap, Map}' if `Map' is not a map.
 %%
 %% This function may be used in a guard expression.
 %% @end
@@ -370,10 +368,9 @@ map_get(_Key, _Map) ->
 %% @param   Key     the key
 %% @param   Map     the map
 %% @returns `true' if `Key' is associated with a value in `Map'; `false', otherwise.
-%% @throws  {badmap, Map}
 %% @doc     Return `true' if `Key' is associated with a value in `Map'; `false', otherwise.
 %%
-%% This function throws a `{badmap, Map}' exception if `Map' is not a map.
+%% This function raises a `{badmap, Map}' error if `Map' is not a map.
 %%
 %% This function may be used in a guard expression.
 %% @end

libs/estdlib/src/io_lib.erl

@@ -47,7 +47,7 @@ format(Format, Args) ->
         true ->
             interleave(FormatTokens, Instr, Args, []);
         false ->
-            throw(badarg)
+            error(badarg)
     end.
 
 %%
@@ -145,7 +145,7 @@ parse_format_control([$+ | Rest], Format) -> {Format#format{control = '+'}, Rest
 parse_format_control([$e | Rest], Format) -> {Format#format{control = e}, Rest};
 parse_format_control([$f | Rest], Format) -> {Format#format{control = f}, Rest};
 parse_format_control([$g | Rest], Format) -> {Format#format{control = g}, Rest};
-parse_format_control(_String, _Format) -> throw({badarg, _String}).
+parse_format_control(_String, _Format) -> error({badarg, _String}).
 
 %% @private
 parse_integer([$- | Tail]) ->
@@ -251,8 +251,8 @@ format_spw(#format{control = Control, mod = undefined}, T) when is_binary(T) ->
 format_spw(#format{control = s, mod = Mod}, L) when is_list(L) ->
     Flatten = lists:flatten(L),
     case {Mod, test_string_class(Flatten)} of
-        {_, not_a_string} -> throw(badarg);
-        {undefined, unicode} -> throw(badarg);
+        {_, not_a_string} -> error(badarg);
+        {undefined, unicode} -> error(badarg);
         {_, _} -> Flatten
     end;
 format_spw(#format{control = p} = Format, L) when is_list(L) ->
@@ -263,7 +263,7 @@ format_spw(#format{control = p} = Format, L) when is_list(L) ->
 format_spw(#format{control = w} = Format, L) when is_list(L) ->
     [$[, lists:join($,, [format_spw(Format, E) || E <- L]), $]];
 format_spw(#format{control = s}, _) ->
-    throw(badarg);
+    error(badarg);
 format_spw(_Format, T) when is_integer(T) ->
     erlang:integer_to_list(T);
 format_spw(_Format, T) when is_float(T) ->
@@ -317,7 +317,7 @@ format_integer(#format{control = 'B', precision = Base}, T) when is_integer(T) -
 format_integer(#format{control = b, precision = Base}, T) when is_integer(T) ->
     string:to_lower(integer_to_list(T, Base));
 format_integer(_Format, _) ->
-    throw(badarg).
+    error(badarg).
 
 %% @private
 format_float(#format{control = f, precision = undefined}, T) when is_float(T) ->
@@ -341,7 +341,7 @@ format_float(#format{control = C, precision = Precision}, T) when
 ->
     format_scientific(T, Precision, 0);
 format_float(_Format, _) ->
-    throw(badarg).
+    error(badarg).
 
 %% @private
 format_scientific(T, Precision, E) when (T < 1 andalso T > 0) orelse (T > -1 andalso T < 0) ->
@@ -366,7 +366,7 @@ format_char(#format{precision = Precision} = Format, T) when Precision =/= undef
     [Ch] = format_char(Format#format{field_width = undefined, precision = undefined}, T),
     lists:duplicate(Precision, Ch);
 format_char(_, _) ->
-    throw(badarg).
+    error(badarg).
 
 %% @private
 %% String classes:

libs/estdlib/src/lists.erl

@@ -461,7 +461,7 @@ seq(From, To, Incr) when
         (To > (From - Incr) andalso Incr < 0) orelse
         (Incr =:= 0 andalso From =/= To)
 ->
-    throw(badarg);
+    error(badarg);
 seq(To, To, 0) ->
     [To];
 seq(From, To, Incr) ->

libs/estdlib/src/logger.erl

@@ -544,9 +544,7 @@ validate_level(Level) when
         Level == info orelse
         Level == debug
 ->
-    Level;
-validate_level(Level) ->
-    throw({unsupported_level, Level}).
+    Level.
 
 %% @private
 to_int_level(emergency) ->