test/lib_read_write.rb in kgio-2.10.0 vs test/lib_read_write.rb in kgio-2.11.0

@@ -5,11 +5,16 @@
 require 'fileutils'
 $-w = true
 require 'kgio'
 
 module LibReadWriteTest
-  RANDOM_BLOB = File.open("/dev/urandom") { |fp| fp.read(10 * 1024 * 1024) }
+  RANDOM_BLOB = File.open("/dev/urandom") do |fp|
+    nr = 31
+    buf = fp.read(nr)
+    # get roughly a 20MB block of random data
+    (buf * (20 * 1024 * 1024 / nr)) + (buf * rand(123))
+  end
 
   def teardown
     @rd.close if defined?(@rd) && ! @rd.closed?
     @wr.close if defined?(@wr) && ! @wr.closed?
     FileUtils.remove_entry_secure(@tmpdir) if defined?(@tmpdir)
@@ -367,11 +372,11 @@
     @wr.instance_variable_set :@nr, 0
     def @wr.kgio_wait_writable
       @nr += 1
       IO.select(nil, [self])
     end
-    buf = "." * 1024 * 1024 * 10
+    buf = RANDOM_BLOB
     thr = Thread.new { @wr.kgio_write(buf) }
     Thread.pass until thr.stop?
     readed = @rd.read(buf.size)
     thr.join
     assert_nil thr.value
@@ -383,10 +388,10 @@
     @wr.instance_variable_set :@nr, 0
     def @wr.kgio_wait_writable
       @nr += 1
       IO.select(nil, [self])
     end
-    buf = ["." * 1024] * 1024 * 10
+    buf = [ RANDOM_BLOB, RANDOM_BLOB ]
     buf_size = buf.inject(0){|c, s| c + s.size}
     thr = Thread.new { @wr.kgio_writev(buf) }
     Thread.pass until thr.stop?
     readed = @rd.read(buf_size)
     thr.join