From 95e8c48dd3348503a8c7db5d0498894a1b676395 Mon Sep 17 00:00:00 2001
From: eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 7 May 2017 12:04:49 +0000
Subject: Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 spec/rubyspec/core/io/eof_spec.rb | 107 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 spec/rubyspec/core/io/eof_spec.rb

(limited to 'spec/rubyspec/core/io/eof_spec.rb')

diff --git a/spec/rubyspec/core/io/eof_spec.rb b/spec/rubyspec/core/io/eof_spec.rb
new file mode 100644
index 0000000000..a2c5e563f0
--- /dev/null
+++ b/spec/rubyspec/core/io/eof_spec.rb
@@ -0,0 +1,107 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "IO#eof?" do
+  before :each do
+    @name = tmp("empty.txt")
+    touch @name
+  end
+
+  after :each do
+    rm_r @name
+  end
+
+  it "returns true on an empty stream that has just been opened" do
+    File.open(@name) { |empty| empty.eof?.should == true }
+  end
+
+  it "raises IOError on stream not opened for reading" do
+    lambda do
+      File.open(@name, "w") { |f| f.eof? }
+    end.should raise_error(IOError)
+  end
+end
+
+describe "IO#eof?" do
+  before :each do
+    @name = fixture __FILE__, "lines.txt"
+    @io = IOSpecs.io_fixture "lines.txt"
+  end
+
+  after :each do
+    @io.close if @io && !@io.closed?
+  end
+
+  it "returns false when not at end of file" do
+    @io.read 1
+    @io.eof?.should == false
+  end
+
+  it "returns true after reading with read with no parameters" do
+    @io.read()
+    @io.eof?.should == true
+  end
+
+  it "returns true after reading with read" do
+    @io.read(File.size(@name))
+    @io.eof?.should == true
+  end
+
+  it "returns true after reading with sysread" do
+    @io.sysread(File.size(@name))
+    @io.eof?.should == true
+  end
+
+  it "returns true after reading with readlines" do
+    @io.readlines
+    @io.eof?.should == true
+  end
+
+  it "returns false on just opened non-empty stream" do
+    @io.eof?.should == false
+  end
+
+  it "does not consume the data from the stream" do
+    @io.eof?.should == false
+    @io.getc.should == 'V'
+  end
+
+  it "raises IOError on closed stream" do
+    lambda { IOSpecs.closed_io.eof? }.should raise_error(IOError)
+  end
+
+  it "raises IOError on stream closed for reading by close_read" do
+    @io.close_read
+    lambda { @io.eof? }.should raise_error(IOError)
+  end
+
+  it "returns true on one-byte stream after single-byte read" do
+    File.open(File.dirname(__FILE__) + '/fixtures/one_byte.txt') { |one_byte|
+      one_byte.read(1)
+      one_byte.eof?.should == true
+    }
+  end
+end
+
+describe "IO#eof?" do
+  after :each do
+    @r.close if @r && !@r.closed?
+    @w.close if @w && !@w.closed?
+  end
+
+  it "returns true on receiving side of Pipe when writing side is closed" do
+    @r, @w = IO.pipe
+    @w.close
+    @r.eof?.should == true
+  end
+
+  it "returns false on receiving side of Pipe when writing side wrote some data" do
+    @r, @w = IO.pipe
+    @w.puts "hello"
+    @r.eof?.should == false
+    @w.close
+    @r.eof?.should == false
+    @r.read
+    @r.eof?.should == true
+  end
+end
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