test/mgmt: warn about slow mount points on test failure

Unfortunately, slow mount points still cause minor reliability
issues with the test suite.

1 files changed, 8 insertions, 4 deletions

diff --git a/test/mgmt.rb b/test/mgmt.rb
index 7c650b8..c3c6a66 100644
--- a/test/mgmt.rb
+++ b/test/mgmt.rb
@@ -328,7 +328,7 @@ class TestMgmt < Test::Unit::TestCase
       end until line == ".\n"
     end
 
-    assert lines.grep(/\b#{max}\b/)[0], lines.inspect
+    assert lines.grep(/\b#{max}\b/)[0], swarn(lines.inspect)
     assert_nil lines.grep(/\b#{max + 1}\b/)[0]
     assert File.exist?("#@tmpdir/dev#{max}/usage")
     assert ! File.exist?("#@tmpdir/dev#{max + 1}/usage")
@@ -346,7 +346,7 @@ class TestMgmt < Test::Unit::TestCase
       break if str =~ /^666\t/
     end
     util = RUBY_PLATFORM =~ /linux/ ? %r{\d+\.\d\d} : %r{\d+(?:\.\d+)?}
-    assert_match(/^666\t#{util}\n/, str)
+    assert_match(/^666\t#{util}\n/, str, swarn(str.inspect))
     assert_equal ".\n", @client.gets
   end if `which iostat 2>/dev/null`.chomp.size != 0 &&
          RUBY_PLATFORM !~ /kfreebsd-gnu/
@@ -362,14 +362,18 @@ class TestMgmt < Test::Unit::TestCase
     lines = []
     lines << @client.gets
     lines << @client.gets
-    assert_match(/^(666|999)\t#{util}\n/, lines[0])
-    assert_match(/^(666|999)\t#{util}\n/, lines[1])
+    assert_match(/^(666|999)\t#{util}\n/, lines[0], swarn(lines.inspect))
+    assert_match(/^(666|999)\t#{util}\n/, lines[1], swarn(lines.inspect))
     assert_not_equal(lines[0], lines[1])
 
     assert_equal ".\n", @client.gets
   end if `which iostat 2>/dev/null`.chomp.size != 0 &&
          RUBY_PLATFORM !~ /kfreebsd-gnu/
 
+  def swarn(str)
+    "#{str} slow mountpoints increases the chance of this test failing"
+  end
+
   def sparse_file_prepare(big = nil)
     Dir.mkdir("#@tmpdir/dev666")
     if nil == big