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require "spec"
require "mime/multipart"
describe MIME::Multipart::Builder do
it "generates valid multipart messages" do
io = IO::Memory.new
builder = MIME::Multipart::Builder.new(io, "fixed-boundary")
headers = HTTP::Headers{"X-Foo" => "bar"}
builder.body_part headers, "body part 1"
headers = HTTP::Headers{"X-Type" => "Empty-Body", "X-Foo" => "Bar"}
builder.body_part headers
builder.finish
expected_message = <<-MULTIPART
--fixed-boundary
X-Foo: bar
body part 1
--fixed-boundary
X-Type: Empty-Body
X-Foo: Bar
--fixed-boundary--
MULTIPART
io.to_s.should eq(expected_message.gsub('\n', "\r\n"))
end
it "generates valid multipart messages with preamble and epilogue" do
io = IO::Memory.new
builder = MIME::Multipart::Builder.new(io, "fixed-boundary")
builder.preamble "Here is a preamble to explain why multipart/mixed "
builder.preamble "exists and why your mail client should support it"
headers = HTTP::Headers{"X-Foo" => "bar"}
builder.body_part headers, "body part 1"
headers = HTTP::Headers{"X-Type" => "Empty-Body", "X-Foo" => "Bar"}
builder.body_part headers
builder.epilogue "Irrelevant text"
builder.epilogue "Much more irrelevant text"
builder.finish
expected_message = <<-MULTIPART
Here is a preamble to explain why multipart/mixed exists and why your mail client should support it
--fixed-boundary
X-Foo: bar
body part 1
--fixed-boundary
X-Type: Empty-Body
X-Foo: Bar
--fixed-boundary--
Irrelevant textMuch more irrelevant text
MULTIPART
io.to_s.should eq(expected_message.gsub('\n', "\r\n"))
end
describe "#content_type" do
it "calculates the content type" do
builder = MIME::Multipart::Builder.new(IO::Memory.new, "a delimiter string with a quote in \"")
builder.content_type("alternative").should eq(%q(multipart/alternative; boundary="a delimiter string with a quote in \""))
end
end
describe ".preamble" do
it "accepts different data types" do
io = IO::Memory.new
builder = MIME::Multipart::Builder.new(io, "boundary")
builder.preamble "string\r\n"
builder.preamble "slice\r\n".to_slice
preamble_io = IO::Memory.new "io\r\n"
builder.preamble preamble_io
builder.preamble do |io|
io.print "io"
io << ' '
io.print "block"
io << "\r\n"
end
builder.body_part(HTTP::Headers.new)
builder.finish
generated_multipart = io.to_s
expected_multipart = <<-MULTIPART
string
slice
io
io block
--boundary
--boundary--
MULTIPART
generated_multipart.should eq(expected_multipart.gsub('\n', "\r\n"))
end
it "raises when called after starting the body" do
builder = MIME::Multipart::Builder.new(IO::Memory.new)
builder.body_part HTTP::Headers.new, "test"
expect_raises(MIME::Multipart::Error, "Cannot generate preamble: body already started") do
builder.preamble "test"
end
end
end
describe ".body_part" do
it "accepts different data types" do
io = IO::Memory.new
builder = MIME::Multipart::Builder.new(io, "boundary")
headers = HTTP::Headers{"X-Foo" => "Bar"}
builder.body_part headers, "string\r\n"
builder.body_part headers, "slice".to_slice
body_part_io = IO::Memory.new "io"
builder.body_part headers, body_part_io
builder.body_part(headers) do |io|
io.print "io"
io << ' '
io.print "block"
end
builder.body_part(headers)
builder.finish
generated_multipart = io.to_s
expected_multipart = <<-MULTIPART
--boundary
X-Foo: Bar
string
--boundary
X-Foo: Bar
slice
--boundary
X-Foo: Bar
io
--boundary
X-Foo: Bar
io block
--boundary
X-Foo: Bar
--boundary--
MULTIPART
generated_multipart.should eq(expected_multipart.gsub('\n', "\r\n"))
end
it "raises when called after finishing" do
builder = MIME::Multipart::Builder.new(IO::Memory.new)
builder.body_part HTTP::Headers.new, "test"
builder.finish
expect_raises(MIME::Multipart::Error, "Cannot generate body part: already finished") do
builder.body_part HTTP::Headers.new, "test"
end
end
it "raises when called after epilogue" do
builder = MIME::Multipart::Builder.new(IO::Memory.new)
builder.body_part HTTP::Headers.new, "test"
builder.epilogue "test"
expect_raises(MIME::Multipart::Error, "Cannot generate body part: after epilogue") do
builder.body_part HTTP::Headers.new, "test"
end
end
end
describe ".epilogue" do
it "accepts different data types" do
io = IO::Memory.new
builder = MIME::Multipart::Builder.new(io, "boundary")
builder.body_part(HTTP::Headers.new)
builder.epilogue "string\r\n"
builder.epilogue "slice\r\n".to_slice
epilogue_io = IO::Memory.new "io\r\n"
builder.epilogue epilogue_io
builder.epilogue do |io|
io.print "io"
io << ' '
io.print "block"
io << "\r\n"
end
builder.finish
generated_multipart = io.to_s
expected_multipart = <<-MULTIPART
--boundary
--boundary--
string
slice
io
io block
MULTIPART
generated_multipart.should eq(expected_multipart.gsub('\n', "\r\n"))
end
it "raises when called after finishing" do
builder = MIME::Multipart::Builder.new(IO::Memory.new)
builder.body_part HTTP::Headers.new, "test"
builder.finish
expect_raises(MIME::Multipart::Error, "Cannot generate epilogue: already finished") do
builder.epilogue "test"
end
end
it "raises when called with no body parts" do
builder = MIME::Multipart::Builder.new(IO::Memory.new)
expect_raises(MIME::Multipart::Error, "Cannot generate epilogue: no body parts") do
builder.epilogue "test"
end
builder.preamble "test"
expect_raises(MIME::Multipart::Error, "Cannot generate epilogue: no body parts") do
builder.epilogue "test"
end
end
end
describe ".finish" do
it "raises if no body exists" do
builder = MIME::Multipart::Builder.new(IO::Memory.new)
expect_raises(MIME::Multipart::Error, "Cannot finish multipart: no body parts") do
builder.finish
end
builder.preamble "test"
expect_raises(MIME::Multipart::Error, "Cannot finish multipart: no body parts") do
builder.finish
end
end
it "raises if already finished" do
builder = MIME::Multipart::Builder.new(IO::Memory.new)
builder.body_part HTTP::Headers.new, "test"
builder.finish
expect_raises(MIME::Multipart::Error, "Cannot finish multipart: already finished") do
builder.finish
end
end
end
end
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