1 files changed, 105 insertions, 0 deletions
diff --git a/spec/ruby/core/time/fixtures/classes.rb b/spec/ruby/core/time/fixtures/classes.rb
new file mode 100644
index 0000000000..21c4e1effb
--- /dev/null
+++ b/spec/ruby/core/time/fixtures/classes.rb
@@ -0,0 +1,105 @@
+module TimeSpecs
+
+  class SubTime < Time; end
+
+  class MethodHolder
+    class << self
+      define_method(:now, &Time.method(:now))
+      define_method(:new, &Time.method(:new))
+    end
+  end
+
+  class Timezone
+    def initialize(options)
+      @offset = options[:offset]
+    end
+
+    def local_to_utc(t)
+      t - @offset
+    end
+
+    def utc_to_local(t)
+      t + @offset
+    end
+  end
+
+  class TimezoneMethodCallRecorder < Timezone
+    def initialize(options, &blk)
+      super(options)
+      @blk = blk
+    end
+
+    def local_to_utc(t)
+      @blk.call(t)
+      super
+    end
+
+    def utc_to_local(t)
+      @blk.call(t)
+      super
+    end
+  end
+
+  class TimeLikeArgumentRecorder
+    def self.result
+      arguments = []
+
+      zone = TimeSpecs::TimezoneMethodCallRecorder.new(offset: 0) do |obj|
+        arguments << obj
+      end
+
+      # ensure timezone's methods are called at least once
+      Time.new(2000, 1, 1, 12, 0, 0, zone)
+
+      return arguments[0]
+    end
+  end
+
+  Z = Struct.new(:offset, :abbr)
+  Zone = Struct.new(:std, :dst, :dst_range)
+  Zones = {
+    "Asia/Colombo" => Zone[Z[5*3600+30*60, "MMT"], nil, nil],
+    "PST" => Zone[Z[(-9*60*60), "PST"], nil, nil],
+  }
+
+  class TimezoneWithName < Timezone
+    attr_reader :name
+
+    def initialize(options)
+      @name = options[:name]
+      @std, @dst, @dst_range = *Zones[@name]
+    end
+
+    def dst?(t)
+      @dst_range&.cover?(t.mon)
+    end
+
+    def zone(t)
+      (dst?(t) ? @dst : @std)
+    end
+
+    def utc_offset(t)
+      zone(t)&.offset || 0
+    end
+
+    def abbr(t)
+      zone(t)&.abbr
+    end
+
+    def local_to_utc(t)
+      t - utc_offset(t)
+    end
+
+    def utc_to_local(t)
+      t + utc_offset(t)
+    end
+  end
+
+  class TimeWithFindTimezone < Time
+    def self.find_timezone(name)
+      TimezoneWithName.new(name: name.to_s)
+    end
+  end
+
+  TimezoneWithAbbr = TimezoneWithName
+end