unittests: Run all unit tests in their own processes

Used

    sed -r -i -e '/ helpers =/ s/$/\nlocal itp = helpers.gen_itp(it)/; s/^(\s*)it\(/\1itp(/' test/unit/**/*_spec.lua

to alter all tests. Locally they all run fine now.

Reasoning:

1. General: state from one test should not affect other tests.
2. Local: travis build is failing with something which may be an output of
   garbage collector. This should prevent state of the garbage collector from
   interferring as well.

1 files changed, 7 insertions, 6 deletions

diff --git a/test/unit/eval/decode_spec.lua b/test/unit/eval/decode_spec.lua
index 742b754d8a..03fe556001 100644
--- a/test/unit/eval/decode_spec.lua
+++ b/test/unit/eval/decode_spec.lua
@@ -1,4 +1,5 @@
 local helpers = require('test.unit.helpers')
+local itp = helpers.gen_itp(it)
 
 local cimport = helpers.cimport
 local to_cstr = helpers.to_cstr
@@ -29,7 +30,7 @@ describe('json_decode_string()', function()
     return ffi.gc(decode.xmemdup(c, 1), decode.xfree)
   end
 
-  it('does not overflow when running with `n…`, `t…`, `f…`', function()
+  itp('does not overflow when running with `n…`, `t…`, `f…`', function()
     local rettv = ffi.new('typval_T', {v_type=decode.VAR_UNKNOWN})
     decode.emsg_silent = 1
     -- This will not crash, but if `len` argument will be ignored it will parse
@@ -56,7 +57,7 @@ describe('json_decode_string()', function()
     eq(decode.VAR_UNKNOWN, rettv.v_type)
   end)
 
-  it('does not overflow and crash when running with `n`, `t`, `f`', function()
+  itp('does not overflow and crash when running with `n`, `t`, `f`', function()
     local rettv = ffi.new('typval_T', {v_type=decode.VAR_UNKNOWN})
     decode.emsg_silent = 1
     eq(0, decode.json_decode_string(char('n'), 1, rettv))
@@ -67,7 +68,7 @@ describe('json_decode_string()', function()
     eq(decode.VAR_UNKNOWN, rettv.v_type)
   end)
 
-  it('does not overflow when running with `"…`', function()
+  itp('does not overflow when running with `"…`', function()
     local rettv = ffi.new('typval_T', {v_type=decode.VAR_UNKNOWN})
     decode.emsg_silent = 1
     eq(0, decode.json_decode_string('"t"', 2, rettv))
@@ -84,7 +85,7 @@ describe('json_decode_string()', function()
     eq(msg, ffi.string(decode.last_msg_hist.msg))
   end
 
-  it('does not overflow in error messages', function()
+  itp('does not overflow in error messages', function()
     check_failure(']test', 1, 'E474: No container to close: ]')
     check_failure('[}test', 2, 'E474: Closing list with curly bracket: }')
     check_failure('{]test', 2,
@@ -129,11 +130,11 @@ describe('json_decode_string()', function()
     check_failure('[1test', 2, 'E474: Unexpected end of input: [1')
   end)
 
-  it('does not overflow with `-`', function()
+  itp('does not overflow with `-`', function()
     check_failure('-0', 1, 'E474: Missing number after minus sign: -')
   end)
 
-  it('does not overflow and crash when running with `"`', function()
+  itp('does not overflow and crash when running with `"`', function()
     local rettv = ffi.new('typval_T', {v_type=decode.VAR_UNKNOWN})
     decode.emsg_silent = 1
     eq(0, decode.json_decode_string(char('"'), 1, rettv))