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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")
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
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_version_is ''..."3.2" do
it "yields each paragraph with two separation characters 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
ruby_version_is "3.2" do
it "yields each paragraph with all separation characters 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\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 = $/
suppress_warning {$/ = " "}
@io.send(@method) {|s| seen << s }
seen.should eql(["a ", "b ", "c ", "d ", "e\n1 ", "2 ", "3 ", "4 ", "5"])
ensure
suppress_warning {$/ = old_rs}
end
end
it "returns self" do
@io.send(@method) {|l| l }.should equal(@io)
end
it "returns an Enumerator when passed no block" do
enum = @io.send(@method)
enum.instance_of?(Enumerator).should be_true
seen = []
enum.each { |b| seen << b }
seen.should == ["a b c d e\n", "1 2 3 4 5"]
end
end
describe :stringio_each_not_readable, shared: true do
it "raises an IOError" do
io = StringIO.new("a b c d e", "w")
-> { io.send(@method) { |b| b } }.should raise_error(IOError)
io = StringIO.new("a b c d e")
io.close_read
-> { io.send(@method) { |b| b } }.should raise_error(IOError)
end
end
describe :stringio_each_chomp, shared: true do
it "yields each line with removed newline characters to the passed block" do
seen = []
io = StringIO.new("a b \rc d e\n1 2 3 4 5\r\nthe end")
io.send(@method, chomp: true) {|s| seen << s }
seen.should == ["a b \rc d e", "1 2 3 4 5", "the end"]
end
it "returns each line with removed newline characters when called without block" do
seen = []
io = StringIO.new("a b \rc d e\n1 2 3 4 5\r\nthe end")
enum = io.send(@method, chomp: true)
enum.each {|s| seen << s }
seen.should == ["a b \rc d e", "1 2 3 4 5", "the end"]
end
end
describe :stringio_each_separator_and_chomp, shared: true do
it "yields each line with removed separator to the passed block" do
seen = []
io = StringIO.new("a b \nc d e|1 2 3 4 5\n|the end")
io.send(@method, "|", chomp: true) {|s| seen << s }
seen.should == ["a b \nc d e", "1 2 3 4 5\n", "the end"]
end
it "returns each line with removed separator when called without block" do
seen = []
io = StringIO.new("a b \nc d e|1 2 3 4 5\n|the end")
enum = io.send(@method, "|", chomp: true)
enum.each {|s| seen << s }
seen.should == ["a b \nc d e", "1 2 3 4 5\n", "the end"]
end
end
describe :stringio_each_limit, shared: true do
before :each do
@io = StringIO.new("a b c d e\n1 2 3 4 5")
end
it "returns the data read until the limit is met" do
seen = []
@io.send(@method, 4) { |s| seen << s }
seen.should == ["a b ", "c d ", "e\n", "1 2 ", "3 4 ", "5"]
end
end
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