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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-12-29 23:44:01 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-12-29 23:44:01 +0000
commit3586aef4b8a18fca685f883c80367a80182b943e (patch)
treeeb632c25c42e6736212612f74fca8e766c65c58c /test
parent7e85d487fe237874477983447e1c590d4d9527aa (diff)
test_stringio.rb: test_initialize
* test/stringio/test_stringio.rb (test_initialize): add test for StringIO#initialize. [ruby-core:72585] [Feature #11920] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53378 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test')
-rw-r--r--test/stringio/test_stringio.rb21
1 files changed, 21 insertions, 0 deletions
diff --git a/test/stringio/test_stringio.rb b/test/stringio/test_stringio.rb
index 9a041c2..77a9872 100644
--- a/test/stringio/test_stringio.rb
+++ b/test/stringio/test_stringio.rb
@@ -13,6 +13,27 @@ class TestStringIO < Test::Unit::TestCase
include TestEOF::Seek
+ def test_initialize
+ assert_kind_of StringIO, StringIO.new
+ assert_kind_of StringIO, StringIO.new('str')
+ assert_kind_of StringIO, StringIO.new('str', 'r+')
+ assert_raise(ArgumentError) { StringIO.new('', 'x') }
+ assert_raise(ArgumentError) { StringIO.new('', 'rx') }
+ assert_raise(ArgumentError) { StringIO.new('', 'rbt') }
+ assert_raise(TypeError) { StringIO.new(nil) }
+ assert_raise(TypeError) { StringIO.new('str', nil) }
+
+ o = Object.new
+ def o.to_str
+ nil
+ end
+ assert_raise(TypeError) { StringIO.new(o) }
+ def o.to_str
+ 'str'
+ end
+ assert_kind_of StringIO, StringIO.new(o)
+ end
+
def test_truncate
io = StringIO.new("")
io.puts "abc"