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6395c3b38d
beyond EOF to IO. [ruby-dev:22205] * test/ruby/ut_eof.rb (TestEOF::Seek): test behaviors at reading beyond EOF. * test/ruby/test_file.rb, * test/stringio/test_stringio.rb: include TestEOF::Seek test case. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5158 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
83 lines
1.8 KiB
Ruby
83 lines
1.8 KiB
Ruby
require 'test/unit'
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module TestEOF
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def test_eof_0
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open_file("") {|f|
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assert_equal("", f.read(0))
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assert_equal("", f.read(0))
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assert_equal("", f.read)
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assert_equal(nil, f.read(0))
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assert_equal(nil, f.read(0))
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}
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open_file("") {|f|
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assert_equal(nil, f.read(1))
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assert_equal(nil, f.read)
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assert_equal(nil, f.read(1))
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}
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end
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def test_eof_0_rw
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return unless respond_to? :open_file_rw
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open_file_rw("") {|f|
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assert_equal("", f.read)
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assert_equal(nil, f.read)
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assert_equal(0, f.syswrite(""))
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assert_equal(nil, f.read)
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}
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end
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def test_eof_1
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open_file("a") {|f|
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assert_equal("", f.read(0))
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assert_equal("a", f.read(1))
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assert_equal("" , f.read(0))
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assert_equal("" , f.read(0))
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assert_equal("", f.read)
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assert_equal(nil, f.read(0))
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assert_equal(nil, f.read(0))
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}
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open_file("a") {|f|
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assert_equal("a", f.read(1))
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assert_equal(nil, f.read(1))
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}
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open_file("a") {|f|
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assert_equal("a", f.read(2))
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assert_equal(nil, f.read(1))
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assert_equal(nil, f.read)
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assert_equal(nil, f.read(1))
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}
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open_file("a") {|f|
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assert_equal("a", f.read)
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assert_equal(nil, f.read(1))
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assert_equal(nil, f.read)
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assert_equal(nil, f.read(1))
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}
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end
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module Seek
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def open_file_seek(content, pos)
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open_file(content) do |f|
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f.seek(pos)
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yield f
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end
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end
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def test_eof_0_seek
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open_file_seek("", 10) {|f|
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assert_equal("", f.read)
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assert_equal(nil, f.read)
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}
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end
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def test_eof_1_seek
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open_file_seek("a", 10) {|f|
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assert_equal("", f.read)
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assert_equal(nil, f.read)
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}
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open_file_seek("a", 1) {|f|
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assert_equal("", f.read)
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assert_equal(nil, f.read)
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}
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end
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end
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end
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