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-rw-r--r--spec/rubyspec/core/argf/skip_spec.rb42
1 files changed, 42 insertions, 0 deletions
diff --git a/spec/rubyspec/core/argf/skip_spec.rb b/spec/rubyspec/core/argf/skip_spec.rb
new file mode 100644
index 0000000000..5f5e9eb79a
--- /dev/null
+++ b/spec/rubyspec/core/argf/skip_spec.rb
@@ -0,0 +1,42 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "ARGF.skip" do
+ before :each do
+ @file1_name = fixture __FILE__, "file1.txt"
+ @file2_name = fixture __FILE__, "file2.txt"
+
+ @file2 = File.readlines @file2_name
+ end
+
+ it "skips the current file" do
+ argf [@file1_name, @file2_name] do
+ @argf.read(1)
+ @argf.skip
+ @argf.gets.should == @file2.first
+ end
+ end
+
+ it "has no effect when called twice in a row" do
+ argf [@file1_name, @file2_name] do
+ @argf.read(1)
+ @argf.skip
+ @argf.skip
+ @argf.gets.should == @file2.first
+ end
+ end
+
+ it "has no effect at end of stream" do
+ argf [@file1_name, @file2_name] do
+ @argf.read
+ @argf.skip
+ @argf.gets.should == nil
+ end
+ end
+
+ # This bypasses argf helper because the helper will call argf.file
+ # which as a side-effect calls argf.file which will initialize
+ # internals of ARGF enough for this to work.
+ it "has no effect when nothing has been processed yet" do
+ lambda { ARGF.class.new(@file1_name).skip }.should_not raise_error
+ end
+end