2018-03-04 10:09:32 -05:00
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require_relative '../../spec_helper'
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2017-05-07 08:04:49 -04:00
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require "stringio"
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describe "StringIO#gets when passed [separator]" do
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before :each do
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@io = StringIO.new("this>is>an>example")
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end
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2017-10-28 11:15:48 -04:00
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it "returns the data read till the next occurrence of the passed separator" do
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2017-05-07 08:04:49 -04:00
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@io.gets(">").should == "this>"
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@io.gets(">").should == "is>"
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@io.gets(">").should == "an>"
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@io.gets(">").should == "example"
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end
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it "sets $_ to the read content" do
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@io.gets(">")
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$_.should == "this>"
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@io.gets(">")
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$_.should == "is>"
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@io.gets(">")
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$_.should == "an>"
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@io.gets(">")
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$_.should == "example"
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@io.gets(">")
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$_.should be_nil
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end
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it "accepts string as separator" do
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@io.gets("is>")
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$_.should == "this>"
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@io.gets("an>")
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$_.should == "is>an>"
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@io.gets("example")
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$_.should == "example"
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@io.gets("ple")
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$_.should be_nil
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end
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it "updates self's lineno by one" do
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@io.gets(">")
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@io.lineno.should eql(1)
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@io.gets(">")
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@io.lineno.should eql(2)
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@io.gets(">")
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@io.lineno.should eql(3)
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end
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it "returns the next paragraph when the passed separator is an empty String" do
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io = StringIO.new("this is\n\nan example")
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io.gets("").should == "this is\n\n"
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io.gets("").should == "an example"
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end
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it "returns the remaining content starting at the current position when passed nil" do
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io = StringIO.new("this is\n\nan example")
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io.pos = 5
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io.gets(nil).should == "is\n\nan example"
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end
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it "tries to convert the passed separator to a String using #to_str" do
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obj = mock('to_str')
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obj.should_receive(:to_str).and_return(">")
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@io.gets(obj).should == "this>"
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end
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end
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describe "StringIO#gets when passed no argument" do
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before :each do
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@io = StringIO.new("this is\nan example\nfor StringIO#gets")
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end
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2017-10-28 11:15:48 -04:00
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it "returns the data read till the next occurrence of $/ or till eof" do
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@io.gets.should == "this is\n"
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begin
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2020-01-20 18:37:44 -05:00
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old_sep = $/
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suppress_warning {$/ = " "}
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2017-05-07 08:04:49 -04:00
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@io.gets.should == "an "
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@io.gets.should == "example\nfor "
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@io.gets.should == "StringIO#gets"
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ensure
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2020-01-20 18:37:44 -05:00
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suppress_warning {$/ = old_sep}
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end
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end
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it "sets $_ to the read content" do
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@io.gets
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$_.should == "this is\n"
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@io.gets
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$_.should == "an example\n"
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@io.gets
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$_.should == "for StringIO#gets"
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@io.gets
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$_.should be_nil
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end
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it "updates self's position" do
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@io.gets
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@io.pos.should eql(8)
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@io.gets
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@io.pos.should eql(19)
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@io.gets
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@io.pos.should eql(36)
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end
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it "updates self's lineno" do
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@io.gets
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@io.lineno.should eql(1)
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@io.gets
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@io.lineno.should eql(2)
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@io.gets
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@io.lineno.should eql(3)
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end
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it "returns nil if self is at the end" do
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@io.pos = 36
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@io.gets.should be_nil
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@io.gets.should be_nil
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end
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end
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describe "StringIO#gets when passed [limit]" do
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before :each do
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@io = StringIO.new("this>is>an>example")
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end
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it "returns the data read until the limit is met" do
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@io.gets(4).should == "this"
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@io.gets(3).should == ">is"
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@io.gets(5).should == ">an>e"
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@io.gets(6).should == "xample"
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end
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it "sets $_ to the read content" do
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@io.gets(4)
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$_.should == "this"
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@io.gets(3)
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$_.should == ">is"
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@io.gets(5)
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$_.should == ">an>e"
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@io.gets(6)
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$_.should == "xample"
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@io.gets(3)
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$_.should be_nil
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end
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it "updates self's lineno by one" do
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@io.gets(3)
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@io.lineno.should eql(1)
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@io.gets(3)
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@io.lineno.should eql(2)
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@io.gets(3)
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@io.lineno.should eql(3)
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end
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it "tries to convert the passed limit to an Integer using #to_int" do
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obj = mock('to_int')
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obj.should_receive(:to_int).and_return(4)
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@io.gets(obj).should == "this"
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end
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it "returns a blank string when passed a limit of 0" do
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@io.gets(0).should == ""
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end
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end
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describe "StringIO#gets when passed [separator] and [limit]" do
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before :each do
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@io = StringIO.new("this>is>an>example")
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end
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it "returns the data read until the limit is consumed or the separator is met" do
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@io.gets('>', 8).should == "this>"
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@io.gets('>', 2).should == "is"
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@io.gets('>', 10).should == ">"
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@io.gets('>', 6).should == "an>"
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@io.gets('>', 5).should == "examp"
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end
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it "sets $_ to the read content" do
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@io.gets('>', 8)
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$_.should == "this>"
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@io.gets('>', 2)
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$_.should == "is"
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@io.gets('>', 10)
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$_.should == ">"
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@io.gets('>', 6)
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$_.should == "an>"
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@io.gets('>', 5)
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$_.should == "examp"
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end
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it "updates self's lineno by one" do
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@io.gets('>', 3)
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@io.lineno.should eql(1)
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@io.gets('>', 3)
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@io.lineno.should eql(2)
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@io.gets('>', 3)
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@io.lineno.should eql(3)
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end
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it "tries to convert the passed separator to a String using #to_str" do
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obj = mock('to_str')
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obj.should_receive(:to_str).and_return('>')
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@io.gets(obj, 5).should == "this>"
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end
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it "does not raise TypeError if passed separator is nil" do
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@io.gets(nil, 5).should == "this>"
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end
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it "tries to convert the passed limit to an Integer using #to_int" do
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obj = mock('to_int')
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obj.should_receive(:to_int).and_return(5)
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@io.gets('>', obj).should == "this>"
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end
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end
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describe "StringIO#gets when in write-only mode" do
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it "raises an IOError" do
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io = StringIO.new("xyz", "w")
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2019-07-27 06:40:09 -04:00
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-> { io.gets }.should raise_error(IOError)
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io = StringIO.new("xyz")
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io.close_read
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-> { io.gets }.should raise_error(IOError)
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end
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end
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2017-10-28 11:15:48 -04:00
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2019-04-27 12:53:23 -04:00
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describe "StringIO#gets when passed [chomp]" do
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it "returns the data read without a trailing newline character" do
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io = StringIO.new("this>is>an>example\n")
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io.gets(chomp: true).should == "this>is>an>example"
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2017-10-28 11:15:48 -04:00
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end
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2017-10-28 11:15:52 -04:00
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end
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