From 68238bedcffbb29a219d23d8399c21dd06e1d6e3 Mon Sep 17 00:00:00 2001
From: Hans Nilsson <hans@erlang.org>
Date: Tue, 14 Mar 2017 18:39:02 +0100
Subject: inets/ftp: Testcase for repeating chunked fetch

---
 lib/inets/test/ftp_SUITE.erl | 54 +++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 48 insertions(+), 6 deletions(-)

diff --git a/lib/inets/test/ftp_SUITE.erl b/lib/inets/test/ftp_SUITE.erl
index e2dec0c42a..d37f2feb7e 100644
--- a/lib/inets/test/ftp_SUITE.erl
+++ b/lib/inets/test/ftp_SUITE.erl
@@ -93,8 +93,10 @@ ftp_tests()->
      append_chunk, 
      recv, 
      recv_3, 
-     recv_bin, 
+     recv_bin,
+     recv_bin_twice,
      recv_chunk, 
+     recv_chunk_twice,
      type, 
      quote, 
      error_elogin,
@@ -533,15 +535,19 @@ append_chunk(Config0) ->
 recv() -> 
     [{doc, "Receive a file using recv/2"}].
 recv(Config0) ->
-    File = "f_dst.txt",
+    File1 = "f_dst1.txt",
+    File2 = "f_dst2.txt",
     SrcDir = "a_dir",
-    Contents = <<"ftp_SUITE test ...">>,
-    Config = set_state([reset, {mkfile,[SrcDir,File],Contents}], Config0),
+    Contents1 = <<"1 ftp_SUITE test ...">>,
+    Contents2 = <<"2 ftp_SUITE test ...">>,
+    Config = set_state([reset, {mkfile,[SrcDir,File1],Contents1}, {mkfile,[SrcDir,File2],Contents2}], Config0),
     Pid = proplists:get_value(ftp, Config),
     ok = ftp:cd(Pid, id2ftp(SrcDir,Config)),
     ok = ftp:lcd(Pid, id2ftp("",Config)),
-    ok = ftp:recv(Pid, File),
-    chk_file(File, Contents, Config),
+    ok = ftp:recv(Pid, File1),
+    chk_file(File1, Contents1, Config),
+    ok = ftp:recv(Pid, File2),
+    chk_file(File2, Contents2, Config),
     {error,epath} = ftp:recv(Pid, "non_existing_file"),
     ok.
 
@@ -572,6 +578,25 @@ recv_bin(Config0) ->
     ok.
 
 %%-------------------------------------------------------------------------
+recv_bin_twice() -> 
+    [{doc, "Receive two files as a binaries."}].
+recv_bin_twice(Config0) ->
+    File1 = "f_dst1.txt",
+    File2 = "f_dst2.txt",
+    Contents1 = <<"1 ftp_SUITE test ...">>,
+    Contents2 = <<"2 ftp_SUITE test ...">>,
+    Config = set_state([reset, {mkfile,File1,Contents1}, {mkfile,File2,Contents2}], Config0),
+    ct:log("First transfer",[]),
+    Pid = proplists:get_value(ftp, Config),
+    {ok,Received1} = ftp:recv_bin(Pid, id2ftp(File1,Config)),
+    find_diff(Received1, Contents1),
+    ct:log("Second transfer",[]),
+    {ok,Received2} = ftp:recv_bin(Pid, id2ftp(File2,Config)),
+    find_diff(Received2, Contents2),
+    ct:log("Transfers ready!",[]),
+    {error,epath} = ftp:recv_bin(Pid, id2ftp("non_existing_file",Config)),
+    ok.
+%%-------------------------------------------------------------------------
 recv_chunk() -> 
     [{doc, "Receive a file using chunk-wise."}].
 recv_chunk(Config0) ->
@@ -584,6 +609,23 @@ recv_chunk(Config0) ->
     {ok, ReceivedContents, _Ncunks} = recv_chunk(Pid, <<>>),
     find_diff(ReceivedContents, Contents).
 
+recv_chunk_twice() ->
+    [{doc, "Receive two files using chunk-wise."}].
+recv_chunk_twice(Config0) ->
+    File1 = "big_file1.txt",
+    File2 = "big_file2.txt",
+    Contents1 = list_to_binary( lists:duplicate(1000, lists:seq(0,255)) ),
+    Contents2 = crypto:strong_rand_bytes(1200),
+    Config = set_state([reset, {mkfile,File1,Contents1}, {mkfile,File2,Contents2}], Config0),
+    Pid = proplists:get_value(ftp, Config),
+    {{error, "ftp:recv_chunk_start/2 not called"},_} = recv_chunk(Pid, <<>>),
+    ok = ftp:recv_chunk_start(Pid, id2ftp(File1,Config)),
+    {ok, ReceivedContents1, _Ncunks1} = recv_chunk(Pid, <<>>),
+    ok = ftp:recv_chunk_start(Pid, id2ftp(File2,Config)),
+    {ok, ReceivedContents2, _Ncunks2} = recv_chunk(Pid, <<>>),
+    find_diff(ReceivedContents1, Contents1),
+    find_diff(ReceivedContents2, Contents2).
+
 recv_chunk(Pid, Acc) -> 
     recv_chunk(Pid, Acc, 0).
 
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