62 lines
1.3 KiB
Ruby
62 lines
1.3 KiB
Ruby
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require "test_helper"
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class FileSysWriteTest < Test::Unit::TestCase
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def setup
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FakeFS.activate!
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FakeFS::FileSystem.clear
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end
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def teardown
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FakeFS.deactivate!
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end
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def test_returns_one_byte_when_written
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f = File.open "foo", "w"
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result = f.syswrite "a"
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assert_equal 1, result
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end
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def test_returns_two_bytes_when_two_written
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f = File.open "foo", "w"
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result = f.syswrite "ab"
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assert_equal 2, result
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end
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def test_syswrite_writes_file
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f = File.open "foo", "w"
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f.syswrite "abcdef"
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f.close
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assert_equal "abcdef", File.read("foo")
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end
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def test_writes_to_the_actual_position_when_called_after_buffered_io_read
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File.open("foo", "w") do |file|
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file.syswrite("012345678901234567890123456789")
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end
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file = File.open("foo", "r+")
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file.read(5)
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file.syswrite("abcde")
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File.open("foo") do |file|
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assert_equal "01234abcde", file.sysread(10)
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end
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end
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def test_writes_all_of_the_strings_bytes_but_does_not_buffer_them
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File.open("foo", "w") do |file|
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file.syswrite("012345678901234567890123456789")
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end
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file = File.open("foo", "r+")
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written = file.syswrite("abcde")
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File.open("foo") do |file|
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assert_equal "abcde56789", file.sysread(10)
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file.seek(0)
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file.fsync
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assert_equal "abcde56789", file.sysread(10)
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end
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end
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end
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