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request_pattern.rb
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request_pattern.rb
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module WebMock
class RequestPattern
def initialize(method, uri, options = {})
@method_pattern = MethodPattern.new(method)
@uri_pattern = create_uri_pattern(uri)
assign_options(options)
end
def with(options = {}, &block)
assign_options(options)
@with_block = block
self
end
def matches?(request_signature)
content_type = request_signature.headers['Content-Type'] if request_signature.headers
@method_pattern.matches?(request_signature.method) &&
@uri_pattern.matches?(request_signature.uri) &&
(@body_pattern.nil? || @body_pattern.matches?(request_signature.body, content_type || "")) &&
(@headers_pattern.nil? || @headers_pattern.matches?(request_signature.headers)) &&
(@with_block.nil? || @with_block.call(request_signature))
end
def to_s
string = "#{@method_pattern.to_s.upcase}"
string << " #{@uri_pattern.to_s}"
string << " with body #{@body_pattern.to_s}" if @body_pattern
string << " with headers #{@headers_pattern.to_s}" if @headers_pattern
string << " with given block" if @with_block
string
end
private
def assign_options(options)
@body_pattern = BodyPattern.new(options[:body]) if options.has_key?(:body)
@headers_pattern = HeadersPattern.new(options[:headers]) if options.has_key?(:headers)
@uri_pattern.add_query_params(options[:query]) if options.has_key?(:query)
end
def create_uri_pattern(uri)
if uri.is_a?(Regexp)
URIRegexpPattern.new(uri)
else
URIStringPattern.new(uri)
end
end
end
class MethodPattern
def initialize(pattern)
@pattern = pattern
end
def matches?(method)
@pattern == method || @pattern == :any
end
def to_s
@pattern.to_s
end
end
class URIPattern
def initialize(pattern)
@pattern = pattern.is_a?(Addressable::URI) ? pattern : WebMock::Util::URI.normalize_uri(pattern)
end
end
class URIRegexpPattern < URIPattern
def matches?(uri)
WebMock::Util::URI.variations_of_uri_as_strings(uri).any? { |u| u.match(@pattern) } &&
(@query_params.nil? || @query_params == uri.query_values)
end
def to_s
str = @pattern.inspect
str += " with query params #{@query_params.inspect}" if @query_params
str
end
def add_query_params(query_params)
@query_params = query_params.is_a?(Hash) ? query_params : Addressable::URI.parse('?' + query_params).query_values
end
end
class URIStringPattern < URIPattern
def matches?(uri)
if @pattern.is_a?(Addressable::URI)
uri === @pattern
else
false
end
end
def add_query_params(query_params)
if !query_params.is_a?(Hash)
query_params = Addressable::URI.parse('?' + query_params).query_values
end
@pattern.query_values = (@pattern.query_values || {}).merge(query_params)
end
def to_s
WebMock::Util::URI.strip_default_port_from_uri_string(@pattern.to_s)
end
end
class BodyPattern
BODY_FORMATS = {
'text/xml' => :xml,
'application/xml' => :xml,
'application/json' => :json,
'text/json' => :json,
'application/javascript' => :json,
'text/javascript' => :json,
'text/html' => :html,
'application/x-yaml' => :yaml,
'text/yaml' => :yaml,
'text/plain' => :plain
}
def initialize(pattern)
@pattern = pattern
if (@pattern).is_a?(Hash)
@pattern = normalize_hash(@pattern)
end
end
def matches?(body, content_type = "")
if (@pattern).is_a?(Hash)
return true if @pattern.empty?
case BODY_FORMATS[content_type]
when :json then
matching_hashes?(WebMock::Util::JSON.parse(body), @pattern)
when :xml then
matching_hashes?(Crack::XML.parse(body), @pattern)
else
matching_hashes?(Addressable::URI.parse('?' + body).query_values, @pattern)
end
else
empty_string?(@pattern) && empty_string?(body) ||
@pattern == body ||
@pattern === body
end
end
def to_s
@pattern.inspect
end
private
# Compare two hashes for equality
#
# For two hashes to match they must have the same length and all
# values must match when compared using `#===`.
#
# The following hashes are examples of matches:
#
# {a: /\d+/} and {a: '123'}
#
# {a: '123'} and {a: '123'}
#
# {a: {b: /\d+/}} and {a: {b: '123'}}
#
# {a: {b: 'wow'}} and {a: {b: 'wow'}}
#
# @param [Hash] query_parameters typically the result of parsing
# JSON, XML or URL encoded parameters.
#
# @param [Hash] pattern which contains keys with a string, hash or
# regular expression value to use for comparison.
#
# @return [Boolean] true if the paramaters match the comparison
# hash, false if not.
def matching_hashes?(query_parameters, pattern)
return false unless query_parameters.size == pattern.size
query_parameters.each do |key, actual|
expected = pattern[key]
if actual.is_a?(Hash) && expected.is_a?(Hash)
return false unless matching_hashes?(actual, expected)
else
return false unless expected === actual
end
end
true
end
def empty_string?(string)
string.nil? || string == ""
end
def normalize_hash(hash)
WebMock::Util::HashKeysStringifier.stringify_keys!(hash)
end
end
class HeadersPattern
def initialize(pattern)
@pattern = WebMock::Util::Headers.normalize_headers(pattern) || {}
end
def matches?(headers)
if empty_headers?(@pattern)
empty_headers?(headers)
else
return false if empty_headers?(headers)
@pattern.each do |key, value|
return false unless headers.has_key?(key) && value === headers[key]
end
true
end
end
def to_s
WebMock::Util::Headers.sorted_headers_string(@pattern)
end
private
def empty_headers?(headers)
headers.nil? || headers == {}
end
end
end