From 4954c9fc0f9d06aa4e3e8deb33b41f3fae294adc Mon Sep 17 00:00:00 2001
From: Vladimir Dementyev <dementiev.vm@gmail.com>
Date: Fri, 5 Aug 2022 20:13:09 -0400
Subject: Add MatchData#deconstruct/deconstruct_keys

---
 test/ruby/test_regexp.rb | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb
index 1d93d1a5b1..7d7d7e5180 100644
--- a/test/ruby/test_regexp.rb
+++ b/test/ruby/test_regexp.rb
@@ -608,6 +608,38 @@ class TestRegexp < Test::Unit::TestCase
     assert_equal('#<MatchData "foobarbaz" 1:"foo" 2:"bar" 3:"baz" 4:nil>', m.inspect)
   end
 
+  def test_match_data_deconstruct
+    m = /foo.+/.match("foobarbaz")
+    assert_equal([], m.deconstruct)
+
+    m = /(foo).+(baz)/.match("foobarbaz")
+    assert_equal(["foo", "baz"], m.deconstruct)
+
+    m = /(...)(...)(...)(...)?/.match("foobarbaz")
+    assert_equal(["foo", "bar", "baz", nil], m.deconstruct)
+  end
+
+  def test_match_data_deconstruct_keys
+    m = /foo.+/.match("foobarbaz")
+    assert_equal({}, m.deconstruct_keys([:a]))
+
+    m = /(?<a>foo).+(?<b>baz)/.match("foobarbaz")
+    assert_equal({a: "foo", b: "baz"}, m.deconstruct_keys(nil))
+    assert_equal({a: "foo", b: "baz"}, m.deconstruct_keys([:a, :b]))
+    assert_equal({b: "baz"}, m.deconstruct_keys([:b]))
+    assert_equal({}, m.deconstruct_keys([:c, :a]))
+    assert_equal({a: "foo"}, m.deconstruct_keys([:a, :c]))
+    assert_equal({}, m.deconstruct_keys([:a, :b, :c]))
+
+    assert_raise(TypeError) {
+      m.deconstruct_keys(0)
+    }
+
+    assert_raise(TypeError) {
+      m.deconstruct_keys(["a", "b"])
+    }
+  end
+
   def test_initialize
     assert_raise(ArgumentError) { Regexp.new }
     assert_equal(/foo/, assert_warning(/ignored/) {Regexp.new(/foo/, Regexp::IGNORECASE)})
-- 
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