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Diffstat (limited to 'spec/rubyspec/core/kernel/open_spec.rb')
-rw-r--r-- | spec/rubyspec/core/kernel/open_spec.rb | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/spec/rubyspec/core/kernel/open_spec.rb b/spec/rubyspec/core/kernel/open_spec.rb new file mode 100644 index 0000000000..4e99061219 --- /dev/null +++ b/spec/rubyspec/core/kernel/open_spec.rb @@ -0,0 +1,141 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Kernel#open" do + + before :each do + @name = tmp("kernel_open.txt") + @content = "This is a test" + touch(@name) { |f| f.write @content } + @file = nil + end + + after :each do + @file.close if @file + rm_r @name + end + + it "is a private method" do + Kernel.should have_private_instance_method(:open) + end + + it "opens a file when given a valid filename" do + @file = open(@name) + @file.should be_kind_of(File) + end + + it "opens a file when called with a block" do + open(@name, "r") { |f| f.gets }.should == @content + end + + platform_is_not :windows do + it "opens an io when path starts with a pipe" do + @io = open("|date") + begin + @io.should be_kind_of(IO) + ensure + @io.close + end + end + + it "opens an io when called with a block" do + @output = open("|date") { |f| f.gets } + @output.should_not == '' + end + + it "opens an io for writing" do + bytes = open("|cat", "w") { |io| io.write(".") } + bytes.should == 1 + end + end + + platform_is :windows do + it "opens an io when path starts with a pipe" do + @io = open("|date /t") + begin + @io.should be_kind_of(IO) + @io.read + ensure + @io.close + end + end + + it "opens an io when called with a block" do + @output = open("|date /t") { |f| f.gets } + @output.should_not == '' + end + end + + it "raises an ArgumentError if not passed one argument" do + lambda { open }.should raise_error(ArgumentError) + end + + describe "when given an object that responds to to_open" do + before :each do + ScratchPad.clear + end + + it "calls #to_path to covert the argument to a String before calling #to_str" do + obj = mock("open to_path") + obj.should_receive(:to_path).at_least(1).times.and_return(@name) + obj.should_not_receive(:to_str) + + open(obj, "r") { |f| f.gets }.should == @content + end + + it "calls #to_str to convert the argument to a String" do + obj = mock("open to_str") + obj.should_receive(:to_str).at_least(1).times.and_return(@name) + + open(obj, "r") { |f| f.gets }.should == @content + end + + it "calls #to_open on argument" do + obj = mock('fileish') + @file = File.open(@name) + obj.should_receive(:to_open).and_return(@file) + @file = open(obj) + @file.should be_kind_of(File) + end + + it "returns the value from #to_open" do + obj = mock('to_open') + obj.should_receive(:to_open).and_return(:value) + + open(obj).should == :value + end + + it "passes its arguments onto #to_open" do + obj = mock('to_open') + obj.should_receive(:to_open).with(1,2,3) + + open(obj, 1, 2, 3) + end + + it "passes the return value from #to_open to a block" do + obj = mock('to_open') + obj.should_receive(:to_open).and_return(:value) + + open(obj) do |mock| + ScratchPad.record(mock) + end + + ScratchPad.recorded.should == :value + end + end + + it "raises a TypeError if passed a non-String that does not respond to #to_open" do + obj = mock('non-fileish') + lambda { open(obj) }.should raise_error(TypeError) + lambda { open(nil) }.should raise_error(TypeError) + lambda { open(7) }.should raise_error(TypeError) + end + + it "accepts nil for mode and permission" do + open(@name, nil, nil) { |f| f.gets }.should == @content + end +end + +describe "Kernel.open" do + it "needs to be reviewed for spec completeness" +end |