kotovalexarian-likes-github/rails--rails
1
0
Fork 0
mirror of https://github.com/rails/rails.git synced 2022-11-09 12:12:34 -05:00
Code Releases Activity

Replace dependency tracker with ripper based tracker

Browse source 
Instead of using the ERBTracker, we can use RipperTracker which is extracted from https://github.com/jhawthorn/actionview_precompiler.

Using a parser finds dependencies that would otherwise be difficult to find with the regular expressions. It should also theoretically work with other template systems since it operates on the compiled template instead of the contents of the file.

Co-authored-by: John Hawthorn <john@hawthorn.email>
This commit is contained in:
HParker 2021-04-20 15:36:54 -07:00
parent d364cfb34e
commit 897b9bf6e2
7 changed files with 675 additions and 176 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

157
actionview/lib/action_view/dependency_tracker.rb
View file

@ -2,9 +2,15 @@
require "concurrent/map"
require "action_view/path_set"
require "action_view/render_parser"
module ActionView
class DependencyTracker # :nodoc:
extend ActiveSupport::Autoload
autoload :ERBTracker
autoload :RipperTracker
@trackers = Concurrent::Map.new
def self.find_dependencies(name, template, view_paths = nil)
@ -29,155 +35,6 @@ module ActionView
@trackers.delete(handler)
end
class ERBTracker # :nodoc:
EXPLICIT_DEPENDENCY = /# Template Dependency: (\S+)/
# A valid ruby identifier - suitable for class, method and specially variable names
IDENTIFIER = /
[[:alpha:]_] # at least one uppercase letter, lowercase letter or underscore
[[:word:]]* # followed by optional letters, numbers or underscores
/x
# Any kind of variable name. e.g. @instance, @@class, $global or local.
# Possibly following a method call chain
VARIABLE_OR_METHOD_CHAIN = /
(?:\$|@{1,2})? # optional global, instance or class variable indicator
(?:#{IDENTIFIER}\.)* # followed by an optional chain of zero-argument method calls
(?<dynamic>#{IDENTIFIER}) # and a final valid identifier, captured as DYNAMIC
/x
# A simple string literal. e.g. "School's out!"
STRING = /
(?<quote>['"]) # an opening quote
(?<static>.*?) # with anything inside, captured as STATIC
\k<quote> # and a matching closing quote
/x
# Part of any hash containing the :partial key
PARTIAL_HASH_KEY = /
(?:\bpartial:|:partial\s*=>) # partial key in either old or new style hash syntax
\s* # followed by optional spaces
/x
# Part of any hash containing the :layout key
LAYOUT_HASH_KEY = /
(?:\blayout:|:layout\s*=>) # layout key in either old or new style hash syntax
\s* # followed by optional spaces
/x
# Matches:
# partial: "comments/comment", collection: @all_comments => "comments/comment"
# (object: @single_comment, partial: "comments/comment") => "comments/comment"
#
# "comments/comments"
# 'comments/comments'
# ('comments/comments')
#
# (@topic) => "topics/topic"
# topics => "topics/topic"
# (message.topics) => "topics/topic"
RENDER_ARGUMENTS = /\A
(?:\s*\(?\s*) # optional opening paren surrounded by spaces
(?:.*?#{PARTIAL_HASH_KEY}|#{LAYOUT_HASH_KEY})? # optional hash, up to the partial or layout key declaration
(?:#{STRING}|#{VARIABLE_OR_METHOD_CHAIN}) # finally, the dependency name of interest
/xm
LAYOUT_DEPENDENCY = /\A
(?:\s*\(?\s*) # optional opening paren surrounded by spaces
(?:.*?#{LAYOUT_HASH_KEY}) # check if the line has layout key declaration
(?:#{STRING}|#{VARIABLE_OR_METHOD_CHAIN}) # finally, the dependency name of interest
/xm
def self.supports_view_paths? # :nodoc:
true
end
def self.call(name, template, view_paths = nil)
new(name, template, view_paths).dependencies
end
def initialize(name, template, view_paths = nil)
@name, @template, @view_paths = name, template, view_paths
end
def dependencies
render_dependencies + explicit_dependencies
end
attr_reader :name, :template
private :name, :template
private
def source
template.source
end
def directory
name.split("/")[0..-2].join("/")
end
def render_dependencies
render_dependencies = []
render_calls = source.split(/\brender\b/).drop(1)
render_calls.each do |arguments|
add_dependencies(render_dependencies, arguments, LAYOUT_DEPENDENCY)
add_dependencies(render_dependencies, arguments, RENDER_ARGUMENTS)
end
render_dependencies.uniq
end
def add_dependencies(render_dependencies, arguments, pattern)
arguments.scan(pattern) do
match = Regexp.last_match
add_dynamic_dependency(render_dependencies, match[:dynamic])
add_static_dependency(render_dependencies, match[:static], match[:quote])
end
end
def add_dynamic_dependency(dependencies, dependency)
if dependency
dependencies << "#{dependency.pluralize}/#{dependency.singularize}"
end
end
def add_static_dependency(dependencies, dependency, quote_type)
if quote_type == '"'
# Ignore if there is interpolation
return if dependency.include?('#{')
end
if dependency
if dependency.include?("/")
dependencies << dependency
else
dependencies << "#{directory}/#{dependency}"
end
end
end
def resolve_directories(wildcard_dependencies)
return [] unless @view_paths
return [] if wildcard_dependencies.empty?
# Remove trailing "/*"
prefixes = wildcard_dependencies.map { |query| query[0..-3] }
@view_paths.flat_map(&:all_template_paths).uniq.filter_map { |path|
path.to_s if prefixes.include?(path.prefix)
}.sort
end
def explicit_dependencies
dependencies = source.scan(EXPLICIT_DEPENDENCY).flatten.uniq
wildcards, explicits = dependencies.partition { |dependency| dependency.end_with?("/*") }
(explicits + resolve_directories(wildcards)).uniq
end
end
register_tracker :erb, ERBTracker
register_tracker :erb, RipperTracker
end
end

154
actionview/lib/action_view/dependency_tracker/erb_tracker.rb Normal file
View file

@ -0,0 +1,154 @@
# frozen_string_literal: true
module ActionView
class DependencyTracker # :nodoc:
class ERBTracker # :nodoc:
EXPLICIT_DEPENDENCY = /# Template Dependency: (\S+)/
# A valid ruby identifier - suitable for class, method and specially variable names
IDENTIFIER = /
[[:alpha:]_] # at least one uppercase letter, lowercase letter or underscore
[[:word:]]* # followed by optional letters, numbers or underscores
/x
# Any kind of variable name. e.g. @instance, @@class, $global or local.
# Possibly following a method call chain
VARIABLE_OR_METHOD_CHAIN = /
(?:\$|@{1,2})? # optional global, instance or class variable indicator
(?:#{IDENTIFIER}\.)* # followed by an optional chain of zero-argument method calls
(?<dynamic>#{IDENTIFIER}) # and a final valid identifier, captured as DYNAMIC
/x
# A simple string literal. e.g. "School's out!"
STRING = /
(?<quote>['"]) # an opening quote
(?<static>.*?) # with anything inside, captured as STATIC
\k<quote> # and a matching closing quote
/x
# Part of any hash containing the :partial key
PARTIAL_HASH_KEY = /
(?:\bpartial:|:partial\s*=>) # partial key in either old or new style hash syntax
\s* # followed by optional spaces
/x
# Part of any hash containing the :layout key
LAYOUT_HASH_KEY = /
(?:\blayout:|:layout\s*=>) # layout key in either old or new style hash syntax
\s* # followed by optional spaces
/x
# Matches:
# partial: "comments/comment", collection: @all_comments => "comments/comment"
# (object: @single_comment, partial: "comments/comment") => "comments/comment"
#
# "comments/comments"
# 'comments/comments'
# ('comments/comments')
#
# (@topic) => "topics/topic"
# topics => "topics/topic"
# (message.topics) => "topics/topic"
RENDER_ARGUMENTS = /\A
(?:\s*\(?\s*) # optional opening paren surrounded by spaces
(?:.*?#{PARTIAL_HASH_KEY}|#{LAYOUT_HASH_KEY})? # optional hash, up to the partial or layout key declaration
(?:#{STRING}|#{VARIABLE_OR_METHOD_CHAIN}) # finally, the dependency name of interest
/xm
LAYOUT_DEPENDENCY = /\A
(?:\s*\(?\s*) # optional opening paren surrounded by spaces
(?:.*?#{LAYOUT_HASH_KEY}) # check if the line has layout key declaration
(?:#{STRING}|#{VARIABLE_OR_METHOD_CHAIN}) # finally, the dependency name of interest
/xm
def self.supports_view_paths? # :nodoc:
true
end
def self.call(name, template, view_paths = nil)
new(name, template, view_paths).dependencies
end
def initialize(name, template, view_paths = nil)
@name, @template, @view_paths = name, template, view_paths
end
def dependencies
render_dependencies + explicit_dependencies
end
attr_reader :name, :template
private :name, :template
private
def source
template.source
end
def directory
name.split("/")[0..-2].join("/")
end
def render_dependencies
render_dependencies = []
render_calls = source.split(/\brender\b/).drop(1)
render_calls.each do |arguments|
add_dependencies(render_dependencies, arguments, LAYOUT_DEPENDENCY)
add_dependencies(render_dependencies, arguments, RENDER_ARGUMENTS)
end
render_dependencies.uniq
end
def add_dependencies(render_dependencies, arguments, pattern)
arguments.scan(pattern) do
match = Regexp.last_match
add_dynamic_dependency(render_dependencies, match[:dynamic])
add_static_dependency(render_dependencies, match[:static], match[:quote])
end
end
def add_dynamic_dependency(dependencies, dependency)
if dependency
dependencies << "#{dependency.pluralize}/#{dependency.singularize}"
end
end
def add_static_dependency(dependencies, dependency, quote_type)
if quote_type == '"'
# Ignore if there is interpolation
return if dependency.include?('#{')
end
if dependency
if dependency.include?("/")
dependencies << dependency
else
dependencies << "#{directory}/#{dependency}"
end
end
end
def resolve_directories(wildcard_dependencies)
return [] unless @view_paths
return [] if wildcard_dependencies.empty?
# Remove trailing "/*"
prefixes = wildcard_dependencies.map { |query| query[0..-3] }
@view_paths.flat_map(&:all_template_paths).uniq.filter_map { |path|
path.to_s if prefixes.include?(path.prefix)
}.sort
end
def explicit_dependencies
dependencies = source.scan(EXPLICIT_DEPENDENCY).flatten.uniq
wildcards, explicits = dependencies.partition { |dependency| dependency.end_with?("/*") }
(explicits + resolve_directories(wildcards)).uniq
end
end
end
end

59
actionview/lib/action_view/dependency_tracker/ripper_tracker.rb Normal file
View file

@ -0,0 +1,59 @@
# frozen_string_literal: true
module ActionView
class DependencyTracker # :nodoc:
class RipperTracker # :nodoc:
EXPLICIT_DEPENDENCY = /# Template Dependency: (\S+)/
def self.call(name, template, view_paths = nil)
new(name, template, view_paths).dependencies
end
def dependencies
render_dependencies + explicit_dependencies
end
def self.supports_view_paths? # :nodoc:
true
end
def initialize(name, template, view_paths = nil)
@name, @template, @view_paths = name, template, view_paths
end
private
attr_reader :template, :name, :view_paths
def render_dependencies
return [] unless template.source.include?("render")
compiled_source = template.handler.call(template, template.source)
RenderParser.new(@name, compiled_source).render_calls.filter_map do |render_call|
next if render_call.end_with?("/_")
render_call.gsub(%r|/_|, "/")
end
end
def explicit_dependencies
dependencies = template.source.scan(EXPLICIT_DEPENDENCY).flatten.uniq
wildcards, explicits = dependencies.partition { |dependency| dependency.end_with?("/*") }
(explicits + resolve_directories(wildcards)).uniq
end
def resolve_directories(wildcard_dependencies)
return [] unless view_paths
return [] if wildcard_dependencies.empty?
# Remove trailing "/*"
prefixes = wildcard_dependencies.map { |query| query[0..-3] }
view_paths.flat_map(&:all_template_paths).uniq.filter_map { |path|
path.to_s if prefixes.include?(path.prefix)
}.sort
end
end
end
end

188
actionview/lib/action_view/render_parser.rb Normal file
View file

@ -0,0 +1,188 @@
# frozen_string_literal: true
require "action_view/ripper_ast_parser"
module ActionView
class RenderParser # :nodoc:
def initialize(name, code)
@name = name
@code = code
@parser = RipperASTParser
end
def render_calls
render_nodes = @parser.parse_render_nodes(@code)
render_nodes.map do |method, nodes|
nodes.map { |n| send(:parse_render, n) }
end.flatten.compact
end
private
def directory
File.dirname(@name)
end
def resolve_path_directory(path)
if path.include?("/")
path
else
"#{directory}/#{path}"
end
end
# Convert
# render("foo", ...)
# into either
# render(template: "foo", ...)
# or
# render(partial: "foo", ...)
def normalize_args(string, options_hash)
if options_hash
{ partial: string, locals: options_hash }
else
{ partial: string }
end
end
def parse_render(node)
node = node.argument_nodes
if (node.length == 1 || node.length == 2) && !node[0].hash?
if node.length == 1
options = normalize_args(node[0], nil)
elsif node.length == 2
options = normalize_args(node[0], node[1])
end
return nil unless options
parse_render_from_options(options)
elsif node.length == 1 && node[0].hash?
options = parse_hash_to_symbols(node[0])
return nil unless options
parse_render_from_options(options)
else
nil
end
end
def parse_hash(node)
node.hash? && node.to_hash
end
def parse_hash_to_symbols(node)
hash = parse_hash(node)
return unless hash
hash.transform_keys do |key_node|
key = parse_sym(key_node)
return unless key
key
end
end
ALL_KNOWN_KEYS = [:partial, :template, :layout, :formats, :locals, :object, :collection, :as, :status, :content_type, :location, :spacer_template]
RENDER_TYPE_KEYS =
[:partial, :template, :layout]
def parse_render_from_options(options_hash)
renders = []
keys = options_hash.keys
if (keys & RENDER_TYPE_KEYS).size < 1
# Must have at least one of render keys
return nil
end
if (keys - ALL_KNOWN_KEYS).any?
# de-opt in case of unknown option
return nil
end
render_type = (keys & RENDER_TYPE_KEYS)[0]
node = options_hash[render_type]
if node.string?
template = resolve_path_directory(node.to_string)
else
if node.variable_reference?
dependency = node.variable_name.sub(/\A(?:\$|@{1,2})/, "")
elsif node.vcall?
dependency = node.variable_name
elsif node.call?
dependency = node.call_method_name
else
return
end
object_template = true
template = "#{dependency.pluralize}/#{dependency.singularize}"
end
return unless template
if spacer_template = render_template_with_spacer?(options_hash)
virtual_path = partial_to_virtual_path(:partial, spacer_template)
renders << virtual_path
end
if options_hash.key?(:object) || options_hash.key?(:collection) || object_template
return nil if options_hash.key?(:object) && options_hash.key?(:collection)
return nil unless options_hash.key?(:partial)
end
virtual_path = partial_to_virtual_path(render_type, template)
renders << virtual_path
# Support for rendering multiple templates (i.e. a partial with a layout)
if layout_template = render_template_with_layout?(render_type, options_hash)
virtual_path = partial_to_virtual_path(:layout, layout_template)
renders << virtual_path
end
renders
end
def parse_str(node)
node.string? && node.to_string
end
def parse_sym(node)
node.symbol? && node.to_symbol
end
private
def render_template_with_layout?(render_type, options_hash)
if render_type != :layout && options_hash.key?(:layout)
parse_str(options_hash[:layout])
end
end
def render_template_with_spacer?(options_hash)
if options_hash.key?(:spacer_template)
parse_str(options_hash[:spacer_template])
end
end
def partial_to_virtual_path(render_type, partial_path)
if render_type == :partial || render_type == :layout
partial_path.gsub(%r{(/|^)([^/]*)\z}, '\1_\2')
else
partial_path
end
end
def layout_to_virtual_path(layout_path)
"layouts/#{layout_path}"
end
end
end

198
actionview/lib/action_view/ripper_ast_parser.rb Normal file
View file

@ -0,0 +1,198 @@
# frozen_string_literal: true
require "ripper"
module ActionView
class RenderParser
module RipperASTParser # :nodoc:
class Node < ::Array # :nodoc:
attr_reader :type
def initialize(type, arr, opts = {})
@type = type
super(arr)
end
def children
to_a
end
def inspect
typeinfo = type && type != :list ? ":" + type.to_s + ", " : ""
"s(" + typeinfo + map(&:inspect).join(", ") + ")"
end
def fcall?
type == :command || type == :fcall
end
def fcall_named?(name)
fcall? &&
self[0].type == :@ident &&
self[0][0] == name
end
def argument_nodes
raise unless fcall?
return [] if self[1].nil?
if self[1].last == false || self[1].last.type == :vcall
self[1][0...-1]
else
self[1][0..-1]
end
end
def string?
type == :string_literal
end
def variable_reference?
type == :var_ref
end
def vcall?
type == :vcall
end
def call?
type == :call
end
def variable_name
self[0][0]
end
def call_method_name
self.last.first
end
def to_string
raise unless string?
self[0][0][0]
end
def hash?
type == :bare_assoc_hash || type == :hash
end
def to_hash
if type == :bare_assoc_hash
hash_from_body(self[0])
elsif type == :hash && self[0] == nil
{}
elsif type == :hash && self[0].type == :assoclist_from_args
hash_from_body(self[0][0])
end
end
def hash_from_body(body)
body.map do |hash_node|
return nil if hash_node.type != :assoc_new
[hash_node[0], hash_node[1]]
end.to_h
end
def symbol?
type == :@label || type == :symbol_literal
end
def to_symbol
if type == :@label && self[0] =~ /\A(.+):\z/
$1.to_sym
elsif type == :symbol_literal && self[0].type == :symbol && self[0][0].type == :@ident
self[0][0][0].to_sym
else
raise "not a symbol?: #{self.inspect}"
end
end
end
class NodeParser < ::Ripper # :nodoc:
PARSER_EVENTS.each do |event|
arity = PARSER_EVENT_TABLE[event]
if arity == 0 && event.to_s.end_with?("_new")
module_eval(<<-eof, __FILE__, __LINE__ + 1)
def on_#{event}(*args)
Node.new(:list, args, lineno: lineno(), column: column())
end
eof
elsif event.to_s.match?(/_add(_.+)?\z/)
module_eval(<<-eof, __FILE__, __LINE__ + 1)
begin; undef on_#{event}; rescue NameError; end
def on_#{event}(list, item)
list.push(item)
list
end
eof
else
module_eval(<<-eof, __FILE__, __LINE__ + 1)
begin; undef on_#{event}; rescue NameError; end
def on_#{event}(*args)
Node.new(:#{event}, args, lineno: lineno(), column: column())
end
eof
end
end
SCANNER_EVENTS.each do |event|
module_eval(<<-End, __FILE__, __LINE__ + 1)
def on_#{event}(tok)
Node.new(:@#{event}, [tok], lineno: lineno(), column: column())
end
End
end
end
class RenderCallExtractor < NodeParser # :nodoc:
attr_reader :render_calls
METHODS_TO_PARSE = %w(render render_to_string)
def initialize(*args)
super
@render_calls = []
end
private
def on_fcall(name, *args)
on_render_call(super)
end
def on_command(name, *args)
on_render_call(super)
end
def on_render_call(node)
METHODS_TO_PARSE.each do |method|
if node.fcall_named?(method)
@render_calls << [method, node]
return node
end
end
node
end
def on_arg_paren(content)
content
end
def on_paren(content)
content
end
end
extend self
def parse_render_nodes(code)
parser = RenderCallExtractor.new(code)
parser.parse
parser.render_calls.group_by(&:first).collect do |method, nodes|
[ method.to_sym, nodes.collect { |v| v[1] } ]
end.to_h
end
end
end
end

6
actionview/test/fixtures/digestor/messages/show.html.erb vendored
View file

@ -6,9 +6,9 @@
<%= render @message.history.events %>
<%# render "something_missing" %>
<%# render "something_missing_1" %>
<%= render "something_missing" %>
<%= render "something_missing_1" %>
<%
# Template Dependency: messages/form
%>
%>

89
actionview/test/template/dependency_tracker_test.rb
View file

@ -14,6 +14,13 @@ class FakeTemplate
def initialize(source, handler = Neckbeard)
@source, @handler = source, handler
if handler == :erb
@handler = ActionView::Template::Handlers::ERB.new
end
end
def type
["text/html"]
end
end
@ -48,69 +55,69 @@ class DependencyTrackerTest < ActionView::TestCase
end
end
class ERBTrackerTest < Minitest::Test
class RipperTrackerTest < Minitest::Test
def make_tracker(name, template)
ActionView::DependencyTracker::ERBTracker.new(name, template)
ActionView::DependencyTracker::RipperTracker.new(name, template)
end
def test_dependency_of_erb_template_with_number_in_filename
template = FakeTemplate.new("<%# render 'messages/message123' %>", :erb)
template = FakeTemplate.new("<%= render 'messages/message123' %>", :erb)
tracker = make_tracker("messages/_message123", template)
assert_equal ["messages/message123"], tracker.dependencies
end
def test_dependency_of_template_partial_with_layout
template = FakeTemplate.new("<%# render partial: 'messages/show', layout: 'messages/layout' %>", :erb)
template = FakeTemplate.new("<%= render partial: 'messages/show', layout: 'messages/layout' %>", :erb)
tracker = make_tracker("multiple/_dependencies", template)
assert_equal ["messages/layout", "messages/show"], tracker.dependencies
assert_equal ["messages/show", "messages/layout"], tracker.dependencies
end
def test_dependency_of_template_layout_standalone
template = FakeTemplate.new("<%# render layout: 'messages/layout' do %>", :erb)
template = FakeTemplate.new("<%= render layout: 'messages/layout' do %>", :erb)
tracker = make_tracker("messages/layout", template)
assert_equal ["messages/layout"], tracker.dependencies
end
def test_finds_dependency_in_correct_directory
template = FakeTemplate.new("<%# render(message.topic) %>", :erb)
template = FakeTemplate.new("<%= render(message.topic) %>", :erb)
tracker = make_tracker("messages/_message", template)
assert_equal ["topics/topic"], tracker.dependencies
end
def test_finds_dependency_in_correct_directory_with_underscore
template = FakeTemplate.new("<%# render(message_type.messages) %>", :erb)
template = FakeTemplate.new("<%= render(message_type.messages) %>", :erb)
tracker = make_tracker("message_types/_message_type", template)
assert_equal ["messages/message"], tracker.dependencies
end
def test_dependency_of_erb_template_with_no_spaces_after_render
template = FakeTemplate.new("<%# render'messages/message' %>", :erb)
template = FakeTemplate.new("<%= render'messages/message' %>", :erb)
tracker = make_tracker("messages/_message", template)
assert_equal ["messages/message"], tracker.dependencies
end
def test_finds_no_dependency_when_render_begins_the_name_of_an_identifier
template = FakeTemplate.new("<%# rendering 'it useless' %>", :erb)
template = FakeTemplate.new("<%= rendering 'it useless' %>", :erb)
tracker = make_tracker("resources/_resource", template)
assert_equal [], tracker.dependencies
end
def test_finds_no_dependency_when_render_ends_the_name_of_another_method
template = FakeTemplate.new("<%# surrender 'to reason' %>", :erb)
template = FakeTemplate.new("<%= surrender 'to reason' %>", :erb)
tracker = make_tracker("resources/_resource", template)
assert_equal [], tracker.dependencies
end
def test_finds_dependency_on_multiline_render_calls
template = FakeTemplate.new("<%#
template = FakeTemplate.new("<%=
render :object => @all_posts,
:partial => 'posts' %>", :erb)
@ -121,9 +128,9 @@ class ERBTrackerTest < Minitest::Test
def test_finds_multiple_unrelated_odd_dependencies
template = FakeTemplate.new("
<%# render('shared/header', title: 'Title') %>
<%= render('shared/header', title: 'Title') %>
<h2>Section title</h2>
<%# render@section %>
<%= render@section %>
", :erb)
tracker = make_tracker("multiple/_dependencies", template)
@ -133,9 +140,9 @@ class ERBTrackerTest < Minitest::Test
def test_finds_dependencies_for_all_kinds_of_identifiers
template = FakeTemplate.new("
<%# render $globals %>
<%# render @instance_variables %>
<%# render @@class_variables %>
<%= render $globals %>
<%= render @instance_variables %>
<%= render @@class_variables %>
", :erb)
tracker = make_tracker("identifiers/_all", template)
@ -148,14 +155,14 @@ class ERBTrackerTest < Minitest::Test
end
def test_finds_dependencies_on_method_chains
template = FakeTemplate.new("<%# render @parent.child.grandchildren %>", :erb)
template = FakeTemplate.new("<%= render @parent.child.grandchildren %>", :erb)
tracker = make_tracker("method/_chains", template)
assert_equal ["grandchildren/grandchild"], tracker.dependencies
end
def test_finds_dependencies_with_special_characters
template = FakeTemplate.new("<%# render @pokémon, partial: 'ピカチュウ' %>", :erb)
template = FakeTemplate.new("<%= render partial: 'ピカチュウ', object: @pokémon %>", :erb)
tracker = make_tracker("special/_characters", template)
assert_equal ["special/ピカチュウ"], tracker.dependencies
@ -163,8 +170,8 @@ class ERBTrackerTest < Minitest::Test
def test_finds_dependencies_with_quotes_within
template = FakeTemplate.new(%{
<%# render "single/quote's" %>
<%# render 'double/quote"s' %>
<%= render "single/quote's" %>
<%= render 'double/quote"s' %>
}, :erb)
tracker = make_tracker("quotes/_single_and_double", template)
@ -195,11 +202,47 @@ class ERBTrackerTest < Minitest::Test
def test_dependencies_with_interpolation
template = FakeTemplate.new(%q{
<%# render "double/#{quote}" %>
<%# render 'single/#{quote}' %>
<%= render "double/#{quote}" %>
<%= render 'single/#{quote}' %>
}, :erb)
tracker = make_tracker("interpolation/_string", template)
assert_equal ["single/\#{quote}"], tracker.dependencies
end
def test_dependencies_skip_commented_out_renders
template = FakeTemplate.new(%{
<%# render "double/#{quote}" %>
}, :erb)
tracker = make_tracker("interpolation/_string", template)
assert_equal [], tracker.dependencies
end
def test_dependencies_skip_unknown_options
template = FakeTemplate.new(%{
<%= render partial: "unknown_render_call", unknown_render_option: "yes" %>
}, :erb)
tracker = make_tracker("interpolation/_string", template)
assert_equal [], tracker.dependencies
end
def test_dependencies_finds_spacer_templates
template = FakeTemplate.new(%{
<%= render partial: "messages/message", collection: books, spacer_template: "messages/message_spacer" %>
}, :erb)
tracker = make_tracker("messages/show", template)
assert_equal ["messages/message_spacer", "messages/message"], tracker.dependencies
end
def test_dependencies_skip_commented_out_renders
template = FakeTemplate.new(%{
<%# render "messages/legacy_message" %>
}, :erb)
tracker = make_tracker("messages/show", template)
assert_equal [], tracker.dependencies
end
end