File 6174-Test-empty-hostname-behaviour-only-for-Uni... of Package erlang

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File 6174-Test-empty-hostname-behaviour-only-for-Unix.patch of Package erlang (Revision 08963e5b214430ddd1a5b61ca2dabc24)

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From b4c7f5b030f09564d7ed2b3ebb5610f7ed34b4e2 Mon Sep 17 00:00:00 2001
From: Raimo Niskanen <raimo@erlang.org>
Date: Tue, 18 Apr 2023 09:40:52 +0200
Subject: [PATCH 4/4] Test empty hostname behaviour only for Unix

On Windows, when looking up the empty hostname, one gets
the address of localhost.  On Unix one gets a failed attempt
to find an address of the top domain (".").

Change the test cases to verify the Unix behaviour on Unix.
---
 lib/kernel/test/gen_sctp_SUITE.erl    | 7 +++++--
 lib/kernel/test/gen_tcp_api_SUITE.erl | 7 +++++--
 lib/kernel/test/gen_udp_SUITE.erl     | 7 +++++--
 lib/kernel/test/inet_SUITE.erl        | 7 +++++--
 4 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/lib/kernel/test/gen_sctp_SUITE.erl b/lib/kernel/test/gen_sctp_SUITE.erl
index c1556f69d7..7b0dbb0d2e 100644
--- a/lib/kernel/test/gen_sctp_SUITE.erl
+++ b/lib/kernel/test/gen_sctp_SUITE.erl
@@ -771,8 +771,11 @@ api_listen(Config) when is_list(Config) ->
     {ok,Sb} = gen_sctp:open(Pb),
     {ok,Sa} = gen_sctp:open(),
 
-    {error, nxdomain} = gen_sctp:connect(Sa, "", 65535, []),
-    {error, nxdomain} = gen_sctp:connect(Sa, '', 65535, []),
+    element(1, os:type()) =:= unix andalso
+        begin
+            {error, nxdomain} = gen_sctp:connect(Sa, "", 65535, []),
+            {error, nxdomain} = gen_sctp:connect(Sa, '', 65535, [])
+        end,
     {error, nxdomain} = gen_sctp:connect(Sa, ".", 65535, []),
     {error, nxdomain} = gen_sctp:connect(Sa, '.', 65535, []),
 
diff --git a/lib/kernel/test/gen_tcp_api_SUITE.erl b/lib/kernel/test/gen_tcp_api_SUITE.erl
index 41dd745250..adaf38226a 100644
--- a/lib/kernel/test/gen_tcp_api_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_api_SUITE.erl
@@ -355,8 +355,11 @@ t_connect_bad(Config) when is_list(Config) ->
     NonExistingPort = 45638,		% Not in use, I hope.
     t_connect_bad(Config, localhost, NonExistingPort, "port not in use"),
     t_connect_bad(Config, "non-existing-host-xxx", 7, "non-existing host"),
-    t_connect_bad(Config, "",                      7, "empty host string"),
-    t_connect_bad(Config, '',                      7, "empty host atom"),
+    element(1, os:type()) =:= unix andalso
+        begin
+            t_connect_bad(Config, "",              7, "empty host string"),
+            t_connect_bad(Config, '',              7, "empty host atom")
+        end,
     t_connect_bad(Config, ".",                     7, "root domain string"),
     t_connect_bad(Config, '.',                     7, "root domain atom").
 
diff --git a/lib/kernel/test/gen_udp_SUITE.erl b/lib/kernel/test/gen_udp_SUITE.erl
index 44c3c7708b..66f0bf3373 100644
--- a/lib/kernel/test/gen_udp_SUITE.erl
+++ b/lib/kernel/test/gen_udp_SUITE.erl
@@ -348,8 +348,11 @@ send_to_empty(Config) when is_list(Config) ->
 
 do_send_to_empty(Config) ->
     {ok, Sock} = ?OPEN(Config, 0),
-    {error, nxdomain} = gen_udp:send(Sock, "", ?CLOSED_PORT, "xXx"),
-    {error, nxdomain} = gen_udp:send(Sock, '', ?CLOSED_PORT, "xXx"),
+    element(1, os:type()) =:= unix andalso
+        begin
+            {error, nxdomain} = gen_udp:send(Sock, "", ?CLOSED_PORT, "xXx"),
+            {error, nxdomain} = gen_udp:send(Sock, '', ?CLOSED_PORT, "xXx")
+        end,
     {error, nxdomain} = gen_udp:send(Sock, ".", ?CLOSED_PORT, "xXx"),
     {error, nxdomain} = gen_udp:send(Sock, '.', ?CLOSED_PORT, "xXx"),
     ok.
diff --git a/lib/kernel/test/inet_SUITE.erl b/lib/kernel/test/inet_SUITE.erl
index 2a59edaaf2..9061b67be1 100644
--- a/lib/kernel/test/inet_SUITE.erl
+++ b/lib/kernel/test/inet_SUITE.erl
@@ -369,8 +369,11 @@ do_gethostbyname(Config) when is_list(Config) ->
 
 
 t_gethostbyname_empty(Config) when is_list(Config) ->
-    {error,nxdomain} = inet:gethostbyname(""),
-    {error,nxdomain} = inet:gethostbyname(''),
+    element(1, os:type()) =:= unix andalso
+        begin
+            {error,nxdomain} = inet:gethostbyname(""),
+            {error,nxdomain} = inet:gethostbyname('')
+        end,
     {error,nxdomain} = inet:gethostbyname("."),
     {error,nxdomain} = inet:gethostbyname('.'),
     ok.
-- 
2.35.3

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File 6174-Test-empty-hostname-behaviour-only-for-Unix.patch of Package erlang (Revision 08963e5b214430ddd1a5b61ca2dabc24)

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