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-rw-r--r--spec/ruby/library/stringio/shared/codepoints.rb45
-rw-r--r--spec/ruby/library/stringio/shared/each.rb163
-rw-r--r--spec/ruby/library/stringio/shared/each_byte.rb48
-rw-r--r--spec/ruby/library/stringio/shared/each_char.rb36
-rw-r--r--spec/ruby/library/stringio/shared/eof.rb24
-rw-r--r--spec/ruby/library/stringio/shared/getc.rb43
-rw-r--r--spec/ruby/library/stringio/shared/isatty.rb5
-rw-r--r--spec/ruby/library/stringio/shared/length.rb5
-rw-r--r--spec/ruby/library/stringio/shared/read.rb145
-rw-r--r--spec/ruby/library/stringio/shared/readchar.rb29
-rw-r--r--spec/ruby/library/stringio/shared/sysread.rb15
-rw-r--r--spec/ruby/library/stringio/shared/tell.rb12
-rw-r--r--spec/ruby/library/stringio/shared/write.rb135
13 files changed, 705 insertions, 0 deletions
diff --git a/spec/ruby/library/stringio/shared/codepoints.rb b/spec/ruby/library/stringio/shared/codepoints.rb
new file mode 100644
index 0000000000..25333bb0fd
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/codepoints.rb
@@ -0,0 +1,45 @@
+# -*- encoding: utf-8 -*-
+describe :stringio_codepoints, shared: true do
+ before :each do
+ @io = StringIO.new("∂φ/∂x = gaîté")
+ @enum = @io.send(@method)
+ end
+
+ it "returns an Enumerator" do
+ @enum.should be_an_instance_of(Enumerator)
+ end
+
+ it "yields each codepoint code in turn" do
+ @enum.to_a.should == [8706, 966, 47, 8706, 120, 32, 61, 32, 103, 97, 238, 116, 233]
+ end
+
+ it "yields each codepoint starting from the current position" do
+ @io.pos = 15
+ @enum.to_a.should == [238, 116, 233]
+ end
+
+ it "raises an error if reading invalid sequence" do
+ @io.pos = 1 # inside of a multibyte sequence
+ -> { @enum.first }.should raise_error(ArgumentError)
+ end
+
+ it "raises an IOError if not readable" do
+ @io.close_read
+ -> { @enum.to_a }.should raise_error(IOError)
+
+ io = StringIO.new(+"xyz", "w")
+ -> { io.send(@method).to_a }.should raise_error(IOError)
+ end
+
+
+ it "calls the given block" do
+ r = []
+ @io.send(@method){|c| r << c }
+ r.should == [8706, 966, 47, 8706, 120, 32, 61, 32, 103, 97, 238, 116, 233]
+ end
+
+ it "returns self" do
+ @io.send(@method) {|l| l }.should equal(@io)
+ end
+
+end
diff --git a/spec/ruby/library/stringio/shared/each.rb b/spec/ruby/library/stringio/shared/each.rb
new file mode 100644
index 0000000000..e0dd3f9b8f
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/each.rb
@@ -0,0 +1,163 @@
+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
+
+ version_is StringIO::VERSION, ""..."3.0.4" do #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
+
+ version_is StringIO::VERSION, "3.0.4" do #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
diff --git a/spec/ruby/library/stringio/shared/each_byte.rb b/spec/ruby/library/stringio/shared/each_byte.rb
new file mode 100644
index 0000000000..b51fa38f2f
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/each_byte.rb
@@ -0,0 +1,48 @@
+describe :stringio_each_byte, shared: true do
+ before :each do
+ @io = StringIO.new("xyz")
+ end
+
+ it "yields each character code in turn" do
+ seen = []
+ @io.send(@method) { |b| seen << b }
+ seen.should == [120, 121, 122]
+ end
+
+ it "updates the position before each yield" do
+ seen = []
+ @io.send(@method) { |b| seen << @io.pos }
+ seen.should == [1, 2, 3]
+ end
+
+ it "does not yield if the current position is out of bounds" do
+ @io.pos = 1000
+ seen = nil
+ @io.send(@method) { |b| seen = b }
+ seen.should be_nil
+ end
+
+ it "returns self" do
+ @io.send(@method) {}.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 == [120, 121, 122]
+ end
+end
+
+describe :stringio_each_byte_not_readable, shared: true do
+ it "raises an IOError" do
+ io = StringIO.new(+"xyz", "w")
+ -> { io.send(@method) { |b| b } }.should raise_error(IOError)
+
+ io = StringIO.new("xyz")
+ io.close_read
+ -> { io.send(@method) { |b| b } }.should raise_error(IOError)
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/each_char.rb b/spec/ruby/library/stringio/shared/each_char.rb
new file mode 100644
index 0000000000..197237c1c8
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/each_char.rb
@@ -0,0 +1,36 @@
+# -*- encoding: utf-8 -*-
+describe :stringio_each_char, shared: true do
+ before :each do
+ @io = StringIO.new("xyz äöü")
+ end
+
+ it "yields each character code in turn" do
+ seen = []
+ @io.send(@method) { |c| seen << c }
+ seen.should == ["x", "y", "z", " ", "ä", "ö", "ü"]
+ end
+
+ it "returns self" do
+ @io.send(@method) {}.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 { |c| seen << c }
+ seen.should == ["x", "y", "z", " ", "ä", "ö", "ü"]
+ end
+end
+
+describe :stringio_each_char_not_readable, shared: true do
+ it "raises an IOError" do
+ io = StringIO.new(+"xyz", "w")
+ -> { io.send(@method) { |b| b } }.should raise_error(IOError)
+
+ io = StringIO.new("xyz")
+ io.close_read
+ -> { io.send(@method) { |b| b } }.should raise_error(IOError)
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/eof.rb b/spec/ruby/library/stringio/shared/eof.rb
new file mode 100644
index 0000000000..e0368a2892
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/eof.rb
@@ -0,0 +1,24 @@
+describe :stringio_eof, shared: true do
+ before :each do
+ @io = StringIO.new("eof")
+ end
+
+ it "returns true when self's position is greater than or equal to self's size" do
+ @io.pos = 3
+ @io.send(@method).should be_true
+
+ @io.pos = 6
+ @io.send(@method).should be_true
+ end
+
+ it "returns false when self's position is less than self's size" do
+ @io.pos = 0
+ @io.send(@method).should be_false
+
+ @io.pos = 1
+ @io.send(@method).should be_false
+
+ @io.pos = 2
+ @io.send(@method).should be_false
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/getc.rb b/spec/ruby/library/stringio/shared/getc.rb
new file mode 100644
index 0000000000..ba65040bce
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/getc.rb
@@ -0,0 +1,43 @@
+describe :stringio_getc, shared: true do
+ before :each do
+ @io = StringIO.new("example")
+ end
+
+ it "increases self's position by one" do
+ @io.send(@method)
+ @io.pos.should eql(1)
+
+ @io.send(@method)
+ @io.pos.should eql(2)
+
+ @io.send(@method)
+ @io.pos.should eql(3)
+ end
+
+ it "returns nil when called at the end of self" do
+ @io.pos = 7
+ @io.send(@method).should be_nil
+ @io.send(@method).should be_nil
+ @io.send(@method).should be_nil
+ end
+
+ it "does not increase self's position when called at the end of file" do
+ @io.pos = 7
+ @io.send(@method)
+ @io.pos.should eql(7)
+
+ @io.send(@method)
+ @io.pos.should eql(7)
+ end
+end
+
+describe :stringio_getc_not_readable, shared: true do
+ it "raises an IOError" do
+ io = StringIO.new(+"xyz", "w")
+ -> { io.send(@method) }.should raise_error(IOError)
+
+ io = StringIO.new("xyz")
+ io.close_read
+ -> { io.send(@method) }.should raise_error(IOError)
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/isatty.rb b/spec/ruby/library/stringio/shared/isatty.rb
new file mode 100644
index 0000000000..c9e7ee7321
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/isatty.rb
@@ -0,0 +1,5 @@
+describe :stringio_isatty, shared: true do
+ it "returns false" do
+ StringIO.new("tty").send(@method).should be_false
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/length.rb b/spec/ruby/library/stringio/shared/length.rb
new file mode 100644
index 0000000000..60a4eb1bdd
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/length.rb
@@ -0,0 +1,5 @@
+describe :stringio_length, shared: true do
+ it "returns the length of the wrapped string" do
+ StringIO.new("example").send(@method).should == 7
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/read.rb b/spec/ruby/library/stringio/shared/read.rb
new file mode 100644
index 0000000000..8ef6ec2734
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/read.rb
@@ -0,0 +1,145 @@
+describe :stringio_read, shared: true do
+ before :each do
+ @io = StringIO.new("example")
+ end
+
+ it "returns the passed buffer String" do
+ # Note: Rubinius bug:
+ # @io.send(@method, 7, buffer = +"").should equal(buffer)
+ ret = @io.send(@method, 7, buffer = +"")
+ ret.should equal(buffer)
+ end
+
+ it "reads length bytes and writes them to the buffer String" do
+ @io.send(@method, 7, buffer = +"").should.equal?(buffer)
+ buffer.should == "example"
+ end
+
+ ruby_version_is ""..."3.4" do
+ it "does not preserve the encoding of the given buffer" do
+ buffer = ''.encode(Encoding::ISO_8859_1)
+ @io.send(@method, 7, buffer)
+
+ buffer.encoding.should_not == Encoding::ISO_8859_1
+ end
+ end
+
+ ruby_version_is "3.4" do
+ it "preserves the encoding of the given buffer" do
+ buffer = ''.encode(Encoding::ISO_8859_1)
+ @io.send(@method, 7, buffer)
+
+ buffer.encoding.should == Encoding::ISO_8859_1
+ end
+ end
+
+ it "tries to convert the passed buffer Object to a String using #to_str" do
+ obj = mock("to_str")
+ obj.should_receive(:to_str).and_return(buffer = +"")
+
+ @io.send(@method, 7, obj)
+ buffer.should == "example"
+ end
+
+ it "raises a TypeError when the passed buffer Object can't be converted to a String" do
+ -> { @io.send(@method, 7, Object.new) }.should raise_error(TypeError)
+ end
+
+ it "raises a FrozenError error when passed a frozen String as buffer" do
+ -> { @io.send(@method, 7, "".freeze) }.should raise_error(FrozenError)
+ end
+end
+
+describe :stringio_read_length, shared: true do
+ before :each do
+ @io = StringIO.new("example")
+ end
+
+ it "reads length bytes from the current position and returns them" do
+ @io.pos = 3
+ @io.send(@method, 4).should == "mple"
+ end
+
+ it "reads at most the whole content" do
+ @io.send(@method, 999).should == "example"
+ end
+
+ it "correctly updates the position" do
+ @io.send(@method, 3)
+ @io.pos.should eql(3)
+
+ @io.send(@method, 999)
+ @io.pos.should eql(7)
+ end
+
+ it "tries to convert the passed length to an Integer using #to_int" do
+ obj = mock("to_int")
+ obj.should_receive(:to_int).and_return(7)
+ @io.send(@method, obj).should == "example"
+ end
+
+ it "raises a TypeError when the passed length can't be converted to an Integer" do
+ -> { @io.send(@method, Object.new) }.should raise_error(TypeError)
+ end
+
+ it "raises a TypeError when the passed length is negative" do
+ -> { @io.send(@method, -2) }.should raise_error(ArgumentError)
+ end
+
+ it "returns a binary String" do
+ @io.send(@method, 4).encoding.should == Encoding::BINARY
+ end
+end
+
+describe :stringio_read_no_arguments, shared: true do
+ before :each do
+ @io = StringIO.new(+"example")
+ end
+
+ it "reads the whole content starting from the current position" do
+ @io.send(@method).should == "example"
+
+ @io.pos = 3
+ @io.send(@method).should == "mple"
+ end
+
+ it "correctly updates the current position" do
+ @io.send(@method)
+ @io.pos.should eql(7)
+ end
+
+ it "correctly update the current position in bytes when multi-byte characters are used" do
+ @io.print("example\u03A3") # Overwrite the original string with 8 characters containing 9 bytes.
+ @io.send(@method)
+ @io.pos.should eql(9)
+ end
+end
+
+describe :stringio_read_nil, shared: true do
+ before :each do
+ @io = StringIO.new("example")
+ end
+
+ it "returns the remaining content from the current position" do
+ @io.send(@method, nil).should == "example"
+
+ @io.pos = 4
+ @io.send(@method, nil).should == "ple"
+ end
+
+ it "updates the current position" do
+ @io.send(@method, nil)
+ @io.pos.should eql(7)
+ end
+end
+
+describe :stringio_read_not_readable, shared: true do
+ it "raises an IOError" do
+ io = StringIO.new(+"test", "w")
+ -> { io.send(@method) }.should raise_error(IOError)
+
+ io = StringIO.new("test")
+ io.close_read
+ -> { io.send(@method) }.should raise_error(IOError)
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/readchar.rb b/spec/ruby/library/stringio/shared/readchar.rb
new file mode 100644
index 0000000000..72d7446c36
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/readchar.rb
@@ -0,0 +1,29 @@
+describe :stringio_readchar, shared: true do
+ before :each do
+ @io = StringIO.new("example")
+ end
+
+ it "correctly updates the current position" do
+ @io.send(@method)
+ @io.pos.should == 1
+
+ @io.send(@method)
+ @io.pos.should == 2
+ end
+
+ it "raises an EOFError when self is at the end" do
+ @io.pos = 7
+ -> { @io.send(@method) }.should raise_error(EOFError)
+ end
+end
+
+describe :stringio_readchar_not_readable, shared: true do
+ it "raises an IOError" do
+ io = StringIO.new(+"a b c d e", "w")
+ -> { io.send(@method) }.should raise_error(IOError)
+
+ io = StringIO.new("a b c d e")
+ io.close_read
+ -> { io.send(@method) }.should raise_error(IOError)
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/sysread.rb b/spec/ruby/library/stringio/shared/sysread.rb
new file mode 100644
index 0000000000..3e23fbc233
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/sysread.rb
@@ -0,0 +1,15 @@
+describe :stringio_sysread_length, shared: true do
+ before :each do
+ @io = StringIO.new("example")
+ end
+
+ it "returns an empty String when passed 0 and no data remains" do
+ @io.send(@method, 8).should == "example"
+ @io.send(@method, 0).should == ""
+ end
+
+ it "raises an EOFError when passed length > 0 and no data remains" do
+ @io.read.should == "example"
+ -> { @io.send(@method, 1) }.should raise_error(EOFError)
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/tell.rb b/spec/ruby/library/stringio/shared/tell.rb
new file mode 100644
index 0000000000..852c51c192
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/tell.rb
@@ -0,0 +1,12 @@
+describe :stringio_tell, shared: true do
+ before :each do
+ @io = StringIOSpecs.build
+ end
+
+ it "returns the current byte offset" do
+ @io.getc
+ @io.send(@method).should == 1
+ @io.read(7)
+ @io.send(@method).should == 8
+ end
+end
diff --git a/spec/ruby/library/stringio/shared/write.rb b/spec/ruby/library/stringio/shared/write.rb
new file mode 100644
index 0000000000..4661658baf
--- /dev/null
+++ b/spec/ruby/library/stringio/shared/write.rb
@@ -0,0 +1,135 @@
+describe :stringio_write, shared: true do
+ before :each do
+ @io = StringIO.new(+'12345')
+ end
+
+ it "tries to convert the passed Object to a String using #to_s" do
+ obj = mock("to_s")
+ obj.should_receive(:to_s).and_return("to_s")
+ @io.send(@method, obj)
+ @io.string.should == "to_s5"
+ end
+end
+
+describe :stringio_write_string, shared: true do
+ before :each do
+ @io = StringIO.new(+'12345')
+ end
+
+ # TODO: RDoc says that #write appends at the current position.
+ it "writes the passed String at the current buffer position" do
+ @io.pos = 2
+ @io.send(@method, 'x').should == 1
+ @io.string.should == '12x45'
+ @io.send(@method, 7).should == 1
+ @io.string.should == '12x75'
+ end
+
+ it "pads self with \\000 when the current position is after the end" do
+ @io.pos = 8
+ @io.send(@method, 'x')
+ @io.string.should == "12345\000\000\000x"
+ @io.send(@method, 9)
+ @io.string.should == "12345\000\000\000x9"
+ end
+
+ it "returns the number of bytes written" do
+ @io.send(@method, '').should == 0
+ @io.send(@method, nil).should == 0
+ str = "1" * 100
+ @io.send(@method, str).should == 100
+ end
+
+ it "updates self's position" do
+ @io.send(@method, 'test')
+ @io.pos.should eql(4)
+ end
+
+ it "handles concurrent writes correctly" do
+ @io = StringIO.new
+ n = 8
+ go = false
+ threads = n.times.map { |i|
+ Thread.new {
+ Thread.pass until go
+ @io.write i.to_s
+ }
+ }
+ go = true
+ threads.each(&:join)
+ @io.string.size.should == n.times.map(&:to_s).join.size
+ end
+
+ it "handles writing non-ASCII UTF-8 after seek" do
+ @io.binmode
+ @io << "\x80"
+ @io.pos = 0
+ @io << "\x81"
+ @io.string.should == "\x812345".b
+ end
+
+ it "handles writing with position < buffer size" do
+ @io.pos = 2
+ @io.write "abc"
+ @io.string.should == "12abc"
+
+ @io.pos = 2
+ @io.write "de"
+ @io.string.should == "12dec"
+
+ @io.pos = 2
+ @io.write "fghi"
+ @io.string.should == "12fghi"
+ end
+
+ it "transcodes the given string when the external encoding is set and neither is BINARY" do
+ utf8_str = "hello"
+ io = StringIO.new.set_encoding(Encoding::UTF_16BE)
+ io.external_encoding.should == Encoding::UTF_16BE
+
+ io.send(@method, utf8_str)
+
+ expected = [0, 104, 0, 101, 0, 108, 0, 108, 0, 111] # UTF-16BE bytes for "hello"
+ io.string.bytes.should == expected
+ end
+
+ it "does not transcode the given string when the external encoding is set and the string encoding is BINARY" do
+ str = "été_".b
+ io = StringIO.new.set_encoding(Encoding::UTF_16BE)
+ io.external_encoding.should == Encoding::UTF_16BE
+
+ io.send(@method, str)
+
+ io.string.bytes.should == str.bytes
+ end
+end
+
+describe :stringio_write_not_writable, shared: true do
+ it "raises an IOError" do
+ io = StringIO.new(+"test", "r")
+ -> { io.send(@method, "test") }.should raise_error(IOError)
+
+ io = StringIO.new(+"test")
+ io.close_write
+ -> { io.send(@method, "test") }.should raise_error(IOError)
+ end
+end
+
+describe :stringio_write_append, shared: true do
+ before :each do
+ @io = StringIO.new(+"example", "a")
+ end
+
+ it "appends the passed argument to the end of self" do
+ @io.send(@method, ", just testing")
+ @io.string.should == "example, just testing"
+
+ @io.send(@method, " and more testing")
+ @io.string.should == "example, just testing and more testing"
+ end
+
+ it "correctly updates self's position" do
+ @io.send(@method, ", testing")
+ @io.pos.should eql(16)
+ end
+end
generated by cgit v1.2.3 (git 2.25.1) at 2026-06-06 22:33:45 +0000