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require File.expand_path(File.join(File.dirname(__FILE__), '..', 'spec_helper'))
RSpec.describe HTTParty::Parser do
describe ".SupportedFormats" do
it "returns a hash" do
expect(HTTParty::Parser::SupportedFormats).to be_instance_of(Hash)
end
end
describe ".call" do
it "generates an HTTParty::Parser instance with the given body and format" do
expect(HTTParty::Parser).to receive(:new).with('body', :plain).and_return(double(parse: nil))
HTTParty::Parser.call('body', :plain)
end
it "calls #parse on the parser" do
parser = double('Parser')
expect(parser).to receive(:parse)
allow(HTTParty::Parser).to receive_messages(new: parser)
parser = HTTParty::Parser.call('body', :plain)
end
end
describe ".formats" do
it "returns the SupportedFormats constant" do
expect(HTTParty::Parser.formats).to eq(HTTParty::Parser::SupportedFormats)
end
it "returns the SupportedFormats constant for subclasses" do
class MyParser < HTTParty::Parser
SupportedFormats = {"application/atom+xml" => :atom}
end
expect(MyParser.formats).to eq({"application/atom+xml" => :atom})
end
end
describe ".format_from_mimetype" do
it "returns a symbol representing the format mimetype" do
expect(HTTParty::Parser.format_from_mimetype("text/plain")).to eq(:plain)
end
it "returns nil when the mimetype is not supported" do
expect(HTTParty::Parser.format_from_mimetype("application/atom+xml")).to be_nil
end
end
describe ".supported_formats" do
it "returns a unique set of supported formats represented by symbols" do
expect(HTTParty::Parser.supported_formats).to eq(HTTParty::Parser::SupportedFormats.values.uniq)
end
end
describe ".supports_format?" do
it "returns true for a supported format" do
allow(HTTParty::Parser).to receive_messages(supported_formats: [:json])
expect(HTTParty::Parser.supports_format?(:json)).to be_truthy
end
it "returns false for an unsupported format" do
allow(HTTParty::Parser).to receive_messages(supported_formats: [])
expect(HTTParty::Parser.supports_format?(:json)).to be_falsey
end
end
describe "#parse" do
before do
@parser = HTTParty::Parser.new('body', :json)
end
it "attempts to parse supported formats" do
allow(@parser).to receive_messages(supports_format?: true)
expect(@parser).to receive(:parse_supported_format)
@parser.parse
end
it "returns the unparsed body when the format is unsupported" do
allow(@parser).to receive_messages(supports_format?: false)
expect(@parser.parse).to eq(@parser.body)
end
it "returns nil for an empty body" do
allow(@parser).to receive_messages(body: '')
expect(@parser.parse).to be_nil
end
it "returns nil for a nil body" do
allow(@parser).to receive_messages(body: nil)
expect(@parser.parse).to be_nil
end
it "returns nil for a 'null' body" do
allow(@parser).to receive_messages(body: "null")
expect(@parser.parse).to be_nil
end
it "returns nil for a body with spaces only" do
allow(@parser).to receive_messages(body: " ")
expect(@parser.parse).to be_nil
end
it "does not raise exceptions for bodies with invalid encodings" do
allow(@parser).to receive_messages(body: "\x80")
allow(@parser).to receive_messages(supports_format?: false)
expect(@parser.parse).to_not be_nil
end
end
describe "#supports_format?" do
it "utilizes the class method to determine if the format is supported" do
expect(HTTParty::Parser).to receive(:supports_format?).with(:json)
parser = HTTParty::Parser.new('body', :json)
parser.send(:supports_format?)
end
end
describe "#parse_supported_format" do
it "calls the parser for the given format" do
parser = HTTParty::Parser.new('body', :json)
expect(parser).to receive(:json)
parser.send(:parse_supported_format)
end
context "when a parsing method does not exist for the given format" do
it "raises an exception" do
parser = HTTParty::Parser.new('body', :atom)
expect do
parser.send(:parse_supported_format)
end.to raise_error(NotImplementedError, "HTTParty::Parser has not implemented a parsing method for the :atom format.")
end
it "raises a useful exception message for subclasses" do
atom_parser = Class.new(HTTParty::Parser) do
def self.name
'AtomParser'
end
end
parser = atom_parser.new 'body', :atom
expect do
parser.send(:parse_supported_format)
end.to raise_error(NotImplementedError, "AtomParser has not implemented a parsing method for the :atom format.")
end
end
end
context "parsers" do
subject do
HTTParty::Parser.new('body', nil)
end
it "parses xml with MultiXml" do
expect(MultiXml).to receive(:parse).with('body')
subject.send(:xml)
end
it "parses json with JSON" do
expect(JSON).to receive(:parse).with('body', :quirks_mode => true, :allow_nan => true)
subject.send(:json)
end
it "parses html by simply returning the body" do
expect(subject.send(:html)).to eq('body')
end
it "parses plain text by simply returning the body" do
expect(subject.send(:plain)).to eq('body')
end
it "parses csv with CSV" do
expect(CSV).to receive(:parse).with('body')
subject.send(:csv)
end
end
end
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