[ruby/benchmark] Adds `Tms#to_h`

[Feature #17601]

lib/benchmark.rb

@@ -527,6 +527,20 @@ module Benchmark
       [@label, @utime, @stime, @cutime, @cstime, @real]
     end
 
+    #
+    # Returns a hash containing the same data as `to_a`.
+    #
+    def to_h
+      {
+        label:  @label,
+        utime:  @utime,
+        stime:  @stime,
+        cutime: @cutime,
+        cstime: @cstime,
+        real:   @real
+      }
+    end
+
     protected
 
     #

test/benchmark/test_benchmark.rb

@@ -155,4 +155,13 @@ BENCH
     realtime = Benchmark.realtime { sleep sleeptime }
     assert_operator sleeptime, :<, realtime
   end
+
+  # Test that `to_h` returns a hash with the expected data.
+  def test_tms_to_h
+    tms = Benchmark::Tms.new(1.1, 2.2, 3.3, 4.4, 5.5, 'my label')
+    expected_hash = {
+      utime: 1.1, stime: 2.2, cutime: 3.3, cstime: 4.4, real: 5.5, label: 'my label'
+    }
+    assert_equal(expected_hash, tms.to_h)
+  end
 end