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-rw-r--r--spec/ruby/library/stringio/each_line_spec.rb201
1 files changed, 195 insertions, 6 deletions
diff --git a/spec/ruby/library/stringio/each_line_spec.rb b/spec/ruby/library/stringio/each_line_spec.rb
index c68f7dae82..4abecbf026 100644
--- a/spec/ruby/library/stringio/each_line_spec.rb
+++ b/spec/ruby/library/stringio/each_line_spec.rb
@@ -1,23 +1,212 @@
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
-require_relative 'shared/each'
describe "StringIO#each_line when passed a separator" do
- it_behaves_like :stringio_each_separator, :each_line
+ 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.each_line(" ") {|s| seen << s}
+ seen.should == ["a ", "b ", "c ", "d ", "e\n1 ", "2 ", "3 ", "4 ", "5"]
+ end
+
+ it "does not change $_" do
+ $_ = "test"
+ @io.each_line(" ") { |s| s}
+ $_.should == "test"
+ end
+
+ it "returns self" do
+ @io.each_line {|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.each_line(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.each_line(nil) {|s| seen << s}
+ seen.should == ["2 1 2 1 2"]
+ end
+
+ 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.each_line("") {|s| seen << s}
+ seen.should == ["para1\n\n", "para2\n\n\n", "para3"]
+ end
end
describe "StringIO#each_line when passed no arguments" do
- it_behaves_like :stringio_each_no_arguments, :each_line
+ 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.each_line {|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.each_line {|s| seen << s }
+ seen.should == ["c d e\n", "1 2 3 4 5"]
+ end
+
+ it "does not change $_" do
+ $_ = "test"
+ @io.each_line { |s| s}
+ $_.should == "test"
+ end
+
+ it "uses $/ as the default line separator" do
+ seen = []
+ begin
+ old_rs = $/
+ suppress_warning {$/ = " "}
+ @io.each_line {|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.each_line {|l| l }.should.equal?(@io)
+ end
+
+ it "returns an Enumerator when passed no block" do
+ enum = @io.each_line
+ enum.instance_of?(Enumerator).should == 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_line when self is not readable" do
- it_behaves_like :stringio_each_not_readable, :each_line
+ it "raises an IOError" do
+ io = StringIO.new(+"a b c d e", "w")
+ -> { io.each_line { |b| b } }.should.raise(IOError)
+
+ io = StringIO.new("a b c d e")
+ io.close_read
+ -> { io.each_line { |b| b } }.should.raise(IOError)
+ end
+end
+
+describe "StringIO#each_line when passed chomp" 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.each_line(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.each_line(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_line when passed chomp" do
- it_behaves_like :stringio_each_chomp, :each_line
+ 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.each_line("|", 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.each_line("|", 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_line when passed limit" do
- it_behaves_like :stringio_each_limit, :each_line
+ 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.each_line(4) { |s| seen << s }
+ seen.should == ["a b ", "c d ", "e\n", "1 2 ", "3 4 ", "5"]
+ end
+end
+
+describe "StringIO#each when passed separator and limit" do
+ before :each do
+ @io = StringIO.new("this>is>an>example")
+ end
+
+ it "returns the data read until the limit is consumed or the separator is met" do
+ @io.each_line('>', 8) { |s| break s }.should == "this>"
+ @io.each_line('>', 2) { |s| break s }.should == "is"
+ @io.each_line('>', 10) { |s| break s }.should == ">"
+ @io.each_line('>', 6) { |s| break s }.should == "an>"
+ @io.each_line('>', 5) { |s| break s }.should == "examp"
+ end
+
+ it "truncates the multi-character separator at the end to meet the limit" do
+ @io.each_line("is>an", 7) { |s| break s }.should == "this>is"
+ end
+
+ it "does not change $_" do
+ $_ = "test"
+ @io.each_line('>', 8) { |s| s }
+ $_.should == "test"
+ end
+
+ it "updates self's lineno by one" do
+ @io.each_line('>', 3) { |s| break s }
+ @io.lineno.should.eql?(1)
+
+ @io.each_line('>', 3) { |s| break s }
+ @io.lineno.should.eql?(2)
+
+ @io.each_line('>', 3) { |s| break s }
+ @io.lineno.should.eql?(3)
+ end
+
+ it "tries to convert the passed separator to a String using #to_str" do # TODO
+ obj = mock('to_str')
+ obj.should_receive(:to_str).and_return('>')
+
+ seen = []
+ @io.each_line(obj, 5) { |s| seen << s }
+ seen.should == ["this>", "is>", "an>", "examp", "le"]
+ end
+
+ it "does not raise TypeError if passed separator is nil" do
+ @io.each_line(nil, 5) { |s| break s }.should == "this>"
+ end
+
+ it "tries to convert the passed limit to an Integer using #to_int" do # TODO
+ obj = mock('to_int')
+ obj.should_receive(:to_int).and_return(5)
+
+ seen = []
+ @io.each_line('>', obj) { |s| seen << s }
+ seen.should == ["this>", "is>", "an>", "examp", "le"]
+ end
end
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