test_process.rb: reduce command string size

* test/ruby/test_process.rb (test_spawn_too_long_path),
  (test_aspawn_too_long_path): reduce command string size until
  intended exception occurs.  [ruby-core:51592] [Bug #7721]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38934 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 18 insertions, 8 deletions

diff --git a/test/ruby/test_process.rb b/test/ruby/test_process.rb
index 682b32f5c4..9746cf008b 100644
--- a/test/ruby/test_process.rb
+++ b/test/ruby/test_process.rb
@@ -1377,20 +1377,30 @@ class TestProcess < Test::Unit::TestCase
     end
   end if File.executable?("/bin/sh")
 
-  def test_too_long_path
+  def test_spawn_too_long_path
     bug4314 = '[ruby-core:34842]'
-    exs = [Errno::ENOENT]
-    exs << Errno::E2BIG if defined?(Errno::E2BIG)
-    EnvUtil.suppress_warning do
-      assert_raise(*exs, bug4314) {Process.spawn("a" * 10_000_000)}
-    end
+    assert_fail_too_long_path(bug4314)
   end
 
-  def test_too_long_path2
+  def test_aspawn_too_long_path
     bug4315 = '[ruby-core:34833]'
+    assert_fail_too_long_path(bug4315)
+  end
+
+  def assert_fail_too_long_path(cmd, mesg = nil)
+    size = 1_000_000 / cmd.size
     exs = [Errno::ENOENT]
     exs << Errno::E2BIG if defined?(Errno::E2BIG)
-    assert_raise(*exs, bug4315) {Process.spawn('"a"|'*10_000_000)}
+    EnvUtil.suppress_warning do
+      assert_raise(*exs, mesg) do
+        begin
+          Process.spawn(cmd * size)
+        rescue NoMemoryError
+          raise if (size /= 2) < 250
+          retry
+        end
+      end
+    end
   end
 
   def test_system_sigpipe