generator.rb in prop_check-0.18.1

- old
+ new

@@ -7,11 +7,18 @@
   # The root of this tree is the value to be used during testing,
   # and the children are 'smaller' values related to the root,
   # to be used during the shrinking phase.
   class Generator
     @@default_size = 10
-    @@default_rng = Random.new
+    @@default_rng =
+      # Backwards compatibility: Random::DEFAULT is deprecated in Ruby 3.x
+      # but required in Ruby 2.x and 1.x
+      if RUBY_VERSION.to_i >= 3
+        Random
+      else
+        Random::DEFAULT
+      end
     @@max_consecutive_attempts = 100
     @@default_kwargs = { size: @@default_size, rng: @@default_rng,
                          max_consecutive_attempts: @@max_consecutive_attempts }
 
     ##
@@ -113,10 +120,12 @@
     # Turns a generator returning `x` into a generator returning `[x, config]`
     # where `config` is the current `PropCheck::Property::Configuration`.
     # This can be used to inspect the configuration inside a `#map` or `#where`
     # and act on it.
     #
-    #  >> Generators.choose(0..100).with_config.map { |int, conf| Date.jd(conf[:default_epoch].jd + int) }.call(size: 10, rng: Random.new(42), config: PropCheck::Property::Configuration.new)
+    #  >> example_config = PropCheck::Property::Configuration.new(default_epoch: Date.new(2022, 11, 22))
+    #  >> generator = Generators.choose(0..100).with_config.map { |int, conf| Date.jd(conf[:default_epoch].jd + int) }
+    #  >> generator.call(size: 10, rng: Random.new(42), config: example_config)
     #  => Date.new(2023, 01, 12)
     def with_config
       Generator.new do |**kwargs|
         result = generate(**kwargs)
         result.map { |val| [val, kwargs[:config]] }