Fix new tests for earlier OTP versions

Author: josefs

test/should_fail/map_comprehension_fail.erl

@@ -1,5 +1,8 @@
 -module(map_comprehension_fail).
 
+-ifdef(OTP_RELEASE).
+-if(?OTP_RELEASE >= 27).
+
 %% Each exported function should produce exactly one type error.
 
 -export([mc_wrong_return_type/0, map_gen_not_map/1]).
@@ -13,3 +16,6 @@ mc_wrong_return_type() ->
 -spec map_gen_not_map(integer()) -> [integer()].
 map_gen_not_map(N) ->
     [V || _K := V <- N].
+
+-endif. %% OTP >= 27
+-endif. %% OTP_RELEASE

test/should_fail/sigils_fail.erl

@@ -1,5 +1,8 @@
 -module(sigils_fail).
 
+-ifdef(OTP_RELEASE).
+-if(?OTP_RELEASE >= 27).
+
 %% Each exported function should produce exactly one type error.
 
 -export([sigil_wrong_type/0]).
@@ -8,3 +11,6 @@
 -spec sigil_wrong_type() -> integer().
 sigil_wrong_type() ->
     ~"hello".
+
+-endif. %% OTP >= 27
+-endif. %% OTP_RELEASE

test/should_pass/map_comprehension_pass.erl

@@ -1,5 +1,8 @@
 -module(map_comprehension_pass).
 
+-ifdef(OTP_RELEASE).
+-if(?OTP_RELEASE >= 27).
+
 -compile([export_all, nowarn_export_all]).
 
 %% Basic map comprehension with list generator
@@ -61,3 +64,6 @@ mc_any_map() ->
 -spec mixed_generators(#{atom() => integer()}) -> [{integer(), atom()}].
 mixed_generators(M) ->
     [{V, K} || K := V <- M].
+
+-endif. %% OTP >= 27
+-endif. %% OTP_RELEASE

test/should_pass/sigils_and_doc_pass.erl

@@ -1,5 +1,8 @@
 -module(sigils_and_doc_pass).
 
+-ifdef(OTP_RELEASE).
+-if(?OTP_RELEASE >= 27).
+
 -compile([export_all, nowarn_export_all]).
 
 %% -doc attribute (OTP 27+)
@@ -33,3 +36,6 @@ sigil_concat() ->
 -spec sigil_arg() -> non_neg_integer().
 sigil_arg() ->
     byte_size(~"hello").
+
+-endif. %% OTP >= 27
+-endif. %% OTP_RELEASE