[Tarantool-patches] [PATCH 02/15] test: don't use IBUF_SHARED in the tests

[Vladislav Shpilevoy]

In msgpack test it is used only to check that 'struct ibuf *' can
be passed to encode() functions. But soon IBUF_SHARED will be
deleted, and its alternative won't be yield-tolerant. This means
it can't be used in this test. There are yields between the buffer
usages.

In varbinary test it is used in a too complicated way to be able
to put it back normally. And otherwise its usage does not make
much sense - without put() it is going to be created from the
scratch on non-first usage until a yield.

In the module_api test it is used to check if some function works
with 'struct ibuf *'. Can be done without IBUF_SHARED.

Part of #5632

(cherry picked from commit d0f0fc4772bc05de8557094832d6df94740a0055)
---
 test/app-tap/module_api.test.lua | 3 ++-
 test/app/msgpack.result          | 7 +++++--
 test/app/msgpack.test.lua        | 5 +++--
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/test/app-tap/module_api.test.lua b/test/app-tap/module_api.test.lua
index 23b62f115..a181e7492 100755
--- a/test/app-tap/module_api.test.lua
+++ b/test/app-tap/module_api.test.lua
@@ -45,13 +45,14 @@ local function test_buffers(test, module)
 
     local ibuf = buffer.ibuf()
     local pbuf = ibuf:alloc(128)
+    local ibuf_ptr = ffi.cast('struct ibuf *', ibuf)
 
     test:ok(not module.toibuf(nil), 'toibuf of nil')
     test:ok(not module.toibuf({}), 'toibuf of {}')
     test:ok(not module.toibuf(1LL), 'toibuf of 1LL')
     test:ok(not module.toibuf(box.NULL), 'toibuf of box.NULL')
     test:ok(not module.toibuf(buffer.reg1), 'toibuf of reg1')
-    test:ok(module.toibuf(buffer.IBUF_SHARED), "toibuf of ibuf*")
+    test:ok(module.toibuf(ibuf_ptr), "toibuf of ibuf*")
     test:ok(module.toibuf(ibuf), 'toibuf of ibuf')
     test:ok(not module.toibuf(pbuf), 'toibuf of pointer to ibuf data')
 end
diff --git a/test/app/msgpack.result b/test/app/msgpack.result
index 54714a59d..e7031e281 100644
--- a/test/app/msgpack.result
+++ b/test/app/msgpack.result
@@ -214,10 +214,10 @@ msgpack.decode(ffi.cast('char *', '\x04\x05\x06'), -1)
 - error: 'msgpack.decode: size can''t be negative'
 ...
 -- Provide a buffer. Try both 'struct ibuf' and 'struct ibuf *'.
-buf = buffer.IBUF_SHARED
+buf_storage = buffer.ibuf()
 ---
 ...
-buf:reset()
+buf = ffi.cast('struct ibuf *', buf_storage)
 ---
 ...
 size = msgpack.encode({a = 1, b = 2}, buf)
@@ -227,6 +227,9 @@ size = msgpack.encode({a = 1, b = 2}, buf)
 ---
 - {'a': 1, 'b': 2}
 ...
+buf_storage = nil
+---
+...
 buf = buffer.ibuf()
 ---
 ...
diff --git a/test/app/msgpack.test.lua b/test/app/msgpack.test.lua
index f501b1bf1..4193e2312 100644
--- a/test/app/msgpack.test.lua
+++ b/test/app/msgpack.test.lua
@@ -71,10 +71,11 @@ msgpack.decode(buf.rpos, buf:size() - 1)
 msgpack.decode(ffi.cast('char *', '\x04\x05\x06'), -1)
 
 -- Provide a buffer. Try both 'struct ibuf' and 'struct ibuf *'.
-buf = buffer.IBUF_SHARED
-buf:reset()
+buf_storage = buffer.ibuf()
+buf = ffi.cast('struct ibuf *', buf_storage)
 size = msgpack.encode({a = 1, b = 2}, buf)
 (msgpack.decode(buf.rpos, size))
+buf_storage = nil
 buf = buffer.ibuf()
 size = msgpack.encode({c = 3, d = 4}, buf)
 (msgpack.decode(buf.rpos, size))
-- 
2.24.3 (Apple Git-128)