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describe :stringio_each_separator, :shared => true do
before(:each) do
@io = StringIO.new("a b c d e\n1 2 3 4 5")
ScratchPad.record []
end
it "uses the passed argument as the line separator" do
seen = []
@io.send(@method, " ") {|s| seen << s}
seen.should == ["a ", "b ", "c ", "d ", "e\n1 ", "2 ", "3 ", "4 ", "5"]
end
it "does not change $_" do
$_ = "test"
@io.send(@method, " ") { |s| s}
$_.should == "test"
end
it "returns self" do
@io.send(@method) {|l| l }.should equal(@io)
end
ruby_version_is "1.9" do
it "returns at most limit characters when limit is positive" do
@io.send(@method, $/, 5) { |x| ScratchPad << x }
ScratchPad.recorded.should == ["a b c", " d e\n", "1 2 3", " 4 5"]
end
it "calls #to_str to convert a single argument to a String" do
sep = mock("stringio each sep")
sep.should_receive(:to_str).at_least(1).times.and_return($/)
sep.should_not_receive(:to_int)
@io.send(@method, sep) { |x| }
end
it "calls #to_int to convert a single argument if #to_str does not return a String" do
limit = mock("stringio each limit")
limit.should_receive(:to_str).at_least(1).times.and_return(nil)
limit.should_receive(:to_int).at_least(1).times.and_return(5)
@io.send(@method, limit) { |x| }
end
it "calls #to_int to convert the limit" do
limit = mock("stringio each limit")
limit.should_receive(:to_int).at_least(1).times.and_return(5)
@io.send(@method, limit) { |x| }
end
it "calls #to_int to convert the limit when passed separator and limit" do
limit = mock("stringio each limit")
limit.should_receive(:to_int).at_least(1).times.and_return(6)
@io.send(@method, $/, limit) { |x| }
end
it "raises an ArgumentError if length is 0 and #each is called on the Enumerator" do
enum = @io.send(@method, 0)
lambda { enum.each { } }.should raise_error(ArgumentError)
end
it "raises an ArgumentError if length is 0" do
lambda { @io.send(@method, 0) { } }.should raise_error(ArgumentError)
end
end
it "tries to convert the passed separator to a String using #to_str" do
obj = mock("to_str")
obj.stub!(:to_str).and_return(" ")
seen = []
@io.send(@method, obj) { |l| seen << l }
seen.should == ["a ", "b ", "c ", "d ", "e\n1 ", "2 ", "3 ", "4 ", "5"]
end
it "yields self's content starting from the current position when the passed separator is nil" do
seen = []
io = StringIO.new("1 2 1 2 1 2")
io.pos = 2
io.send(@method, nil) {|s| seen << s}
seen.should == ["2 1 2 1 2"]
end
ruby_bug "", "1.8.8" do
it "yields each paragraph when passed an empty String as separator" do
seen = []
io = StringIO.new("para1\n\npara2\n\n\npara3")
io.send(@method, "") {|s| seen << s}
seen.should == ["para1\n\n", "para2\n\n", "para3"]
end
end
end
describe :stringio_each_no_arguments, :shared => true do
before(:each) do
@io = StringIO.new("a b c d e\n1 2 3 4 5")
end
it "yields each line to the passed block" do
seen = []
@io.send(@method) {|s| seen << s }
seen.should == ["a b c d e\n", "1 2 3 4 5"]
end
it "yields each line starting from the current position" do
seen = []
@io.pos = 4
@io.send(@method) {|s| seen << s }
seen.should == ["c d e\n", "1 2 3 4 5"]
end
it "does not change $_" do
$_ = "test"
@io.send(@method) { |s| s}
$_.should == "test"
end
it "uses $/ as the default line separator" do
seen = []
begin
old_rs, $/ = $/, " "
@io.send(@method) {|s| seen << s }
seen.should eql(["a ", "b ", "c ", "d ", "e\n1 ", "2 ", "3 ", "4 ", "5"])
ensure
$/ = old_rs
end
end
it "returns self" do
@io.send(@method) {|l| l }.should equal(@io)
end
ruby_version_is "" ... "1.8.7" do
it "yields a LocalJumpError when passed no block" do
lambda { @io.send(@method) }.should raise_error(LocalJumpError)
end
end
ruby_version_is "1.8.7" do
it "returns an Enumerator when passed no block" do
enum = @io.send(@method)
enum.instance_of?(enumerator_class).should be_true
seen = []
enum.each { |b| seen << b }
seen.should == ["a b c d e\n", "1 2 3 4 5"]
end
end
end
describe :stringio_each_not_readable, :shared => true do
it "raises an IOError" do
io = StringIO.new("a b c d e", "w")
lambda { io.send(@method) { |b| b } }.should raise_error(IOError)
io = StringIO.new("a b c d e")
io.close_read
lambda { io.send(@method) { |b| b } }.should raise_error(IOError)
end
end
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