diff options
Diffstat (limited to 'test/-ext-/string')
| -rw-r--r-- | test/-ext-/string/test_capacity.rb | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/test/-ext-/string/test_capacity.rb b/test/-ext-/string/test_capacity.rb index 48d2deadee..6ef5a8c4da 100644 --- a/test/-ext-/string/test_capacity.rb +++ b/test/-ext-/string/test_capacity.rb @@ -29,4 +29,12 @@ class Test_StringCapacity < Test::Unit::TestCase assert_equal("", String.new(capacity: -1000)) assert_equal(capa(String.new(capacity: -10000)), capa(String.new(capacity: -1000))) end + + def test_io_read + s = String.new(capacity: 1000) + open(__FILE__) {|f|f.read(1024*1024, s)} + assert_equal(1024*1024, capa(s)) + open(__FILE__) {|f|s = f.read(1024*1024)} + assert_operator(capa(s), :<=, s.bytesize+4096) + end end |