test: Add tree-sitter query snapshot-based testing

Added a Rust-based integration test harness that
runs quries directly through `tree‑sitter` and
snapshots the captures using insta, mirroring the
Jest snapshot review/accept flow.

Author: vitallium

Cargo.lock

@@ -14,3 +14,9 @@ regex = "1.11.1"
 serde_json = "1.0"
 serde = {version = "1.0", features = ["derive"]}
 zed_extension_api = "0.7.0"
+
+[dev-dependencies]
+tree-sitter = "0.25"
+tree-sitter-ruby = { git = "https://github.com/tree-sitter/tree-sitter-ruby.git", rev = "71bd32fb7607035768799732addba884a37a6210" }
+insta = { version = "1.46", features = ["yaml"] }
+streaming-iterator = "0.1"

Cargo.toml

@@ -0,0 +1,101 @@
+# Debugger fixtures for tree-sitter queries
+
+# Assignments
+class Example
+  def process
+    user = User.new
+    email = user.email
+    result = calculate_sum(1, 2)
+    @total = result
+  end
+
+  def calculate_sum(a, b)
+    sum = a + b
+    sum
+  end
+end
+
+# Method parameters
+class Calculator
+  def add(x, y)
+    x + y
+  end
+
+  def multiply(a, b, c = 1)
+    a * b * c
+  end
+
+  def process(*args, **kwargs)
+    args.sum + kwargs.values.sum
+  end
+end
+
+# Instance variables
+class User
+  def initialize(name)
+    @name = name
+    @created_at = Time.now
+    @active = true
+  end
+
+  def update(email)
+    @email = email
+    @updated_at = Time.now
+  end
+end
+
+# Scopes
+global_var = "test"
+
+class ScopeExample
+  def method_scope
+    local_var = 1
+    another_var = 2
+
+    if local_var > 0
+      scoped_var = 3
+    end
+  end
+end
+
+# Complex scenario
+class ComplexExample
+  def process_data(input, options = {})
+    @input = input
+    result = transform(input)
+    output = result.map { |item| item.value }
+    logger.info(output)
+    @processed = true
+    output
+  end
+
+  def transform(data)
+    temp = data.dup
+    temp.filter { |x| x > 0 }
+  end
+end
+
+# Call arguments
+class ArgumentCalls
+  def audit(user, value)
+    log(user.name)
+    log(fetch())
+    log(value)
+  end
+
+  def fetch
+    "ok"
+  end
+
+  def log(message)
+    message
+  end
+end
+
+# Assignment calls
+class AssignmentCalls
+  def update(user)
+    user.email = "test@example.com"
+    user.profile.name = "Tester"
+  end
+end

tests/languages/ruby/debugger.rb

@@ -0,0 +1,15 @@
+# Inline RBS examples
+#: (String) -> void
+# @rbs (Integer) -> String
+# | arg: String
+# | (Integer) -> String
+
+def example(name)
+  name
+end
+
+pattern = /[a-z]+/i
+
+sql = <<~SQL
+  SELECT * FROM users
+SQL

tests/languages/ruby/injections.rb

@@ -0,0 +1,250 @@
+# Outline fixtures for classes, modules, methods, tasks, and tests
+
+API_VERSION = "v1"
+
+class User
+  VERSION = "1.0"
+
+  include Comparable
+  include Foo::Bar
+  include Baz
+  attr_reader :name, :email
+  alias_method "login", "sign_in"
+
+  private
+  self.private
+
+  def initialize(name)
+    @name = name
+  end
+
+  private def secret
+    # hidden
+  end
+
+  def public_method
+    # visible
+  end
+
+  def self.build
+    new("default")
+  end
+
+  private_class_method def self.build_private
+    new("private")
+  end
+
+  class << self
+    def singleton_block_method
+      # singleton class method
+    end
+  end
+end
+
+module Billing
+  include Payments
+  include Payments::Gateway
+  alias_method :charge, :bill
+
+  private
+  self.private
+end
+
+private def root_private
+  # root private
+end
+
+def root_public
+  # root public
+end
+
+def self.root_singleton
+  # root singleton
+end
+
+# Root test methods
+
+describe "root describe" do
+end
+
+context "root context" do
+end
+
+test "root test" do
+end
+
+it "root it" do
+end
+
+its "root its" do
+end
+
+specify "root specify" do
+end
+
+example "root example" do
+end
+
+feature "root feature" do
+end
+
+scenario "root scenario" do
+end
+
+shared_examples "root shared_examples" do
+end
+
+fdescribe "root fdescribe" do
+end
+
+fcontext "root fcontext" do
+end
+
+fit "root fit" do
+end
+
+fexample "root fexample" do
+end
+
+focus "root focus" do
+end
+
+xdescribe "root xdescribe" do
+end
+
+xcontext "root xcontext" do
+end
+
+xit "root xit" do
+end
+
+xexample "root xexample" do
+end
+
+xspecify "root xspecify" do
+end
+
+skip "root skip" do
+end
+
+pending "root pending" do
+end
+
+it_behaves_like "root it_behaves_like"
+
+it_should_behave_like "root it_should_behave_like"
+
+include_context "root include_context"
+
+include_examples "root include_examples"
+
+# Nested test methods and one-liners
+
+describe "outer" do
+  context "inner" do
+    it "nested it" do
+    end
+
+    specify "nested specify" do
+    end
+
+    example "nested example" do
+    end
+
+    feature "nested feature" do
+    end
+
+    scenario "nested scenario" do
+    end
+
+    shared_examples "nested shared_examples" do
+    end
+
+    fdescribe "nested fdescribe" do
+    end
+
+    fcontext "nested fcontext" do
+    end
+
+    fit "nested fit" do
+    end
+
+    fexample "nested fexample" do
+    end
+
+    focus "nested focus" do
+    end
+
+    xdescribe "nested xdescribe" do
+    end
+
+    xcontext "nested xcontext" do
+    end
+
+    xit "nested xit" do
+    end
+
+    xexample "nested xexample" do
+    end
+
+    xspecify "nested xspecify" do
+    end
+
+    skip "nested skip" do
+    end
+
+    pending "nested pending" do
+    end
+
+    it_behaves_like "nested it_behaves_like"
+
+    it_should_behave_like "nested it_should_behave_like"
+
+    include_context "nested include_context"
+
+    include_examples "nested include_examples"
+
+    it { is_expected.to be_truthy }
+    it { is_expected.not_to be_nil }
+    its { is_expected.to be_empty }
+    specify { is_expected.to be_truthy }
+    example { is_expected.to be_truthy }
+    fit { is_expected.to be_truthy }
+    fexample { is_expected.to be_truthy }
+    focus { is_expected.to be_truthy }
+    xit { is_expected.to be_truthy }
+    xexample { is_expected.to be_truthy }
+    xspecify { is_expected.to be_truthy }
+    skip { is_expected.to be_truthy }
+    pending { is_expected.to be_truthy }
+  end
+end
+
+# Rake namespaces and tasks
+
+namespace :db do
+  namespace :migrate do
+    task :up do
+      # migrate
+    end
+  end
+end
+
+task :version do
+  # version
+end
+
+task default: :test do
+  # default
+end
+
+# Schema.rb style
+
+ActiveRecord::Schema.define(version: 2024_01_01) do
+  create_table "users"
+  create_enum "status"
+  create_schema "audit"
+  create_virtual_table "search"
+  enable_extension "pgcrypto"
+  add_foreign_key "orders", "users"
+end