Report the extra bar three candlestick patterns wait for

Indicators/CandlestickPatterns/AbandonedBaby.cs

@@ -90,6 +90,11 @@ public override bool IsReady
             get { return Samples > Period; }
         }
 
+        /// <summary>
+        /// Required period, in data points, for the indicator to be ready and fully initialized.
+        /// </summary>
+        public override int WarmUpPeriod => Period + 1;
+
         /// <summary>
         /// Computes the next value of this indicator from the given state
         /// </summary>

Indicators/CandlestickPatterns/MatHold.cs

@@ -85,6 +85,11 @@ public override bool IsReady
             get { return Samples > Period; }
         }
 
+        /// <summary>
+        /// Required period, in data points, for the indicator to be ready and fully initialized.
+        /// </summary>
+        public override int WarmUpPeriod => Period + 1;
+
         /// <summary>
         /// Computes the next value of this indicator from the given state
         /// </summary>

Indicators/CandlestickPatterns/RiseFallThreeMethods.cs

@@ -67,6 +67,11 @@ public override bool IsReady
             get { return Samples > Period; }
         }
 
+        /// <summary>
+        /// Required period, in data points, for the indicator to be ready and fully initialized.
+        /// </summary>
+        public override int WarmUpPeriod => Period + 1;
+
         /// <summary>
         /// Computes the next value of this indicator from the given state
         /// </summary>

Tests/Indicators/CandlestickPatterns/CandlestickPatternTests.cs

@@ -153,6 +153,24 @@ public void ResetsProperly(CandlestickPattern indicator, string columnName, stri
             TestHelper.TestIndicatorReset(indicator, testFileName);
         }
 
+        [Test, TestCaseSource(nameof(PatternTestParameters))]
+        public void WarmsUpProperly(CandlestickPattern indicator, string columnName, string testFileName)
+        {
+            // the sample count below only means anything from a known starting point
+            indicator.Reset();
+
+            var period = indicator.WarmUpPeriod;
+            var startDate = new DateTime(2019, 1, 1);
+
+            for (var i = 0; i < period; i++)
+            {
+                indicator.Update(new TradeBar(startDate.AddDays(i), Symbols.SPY, 100m + i, 105m + i, 95m + i, 100m + i, 100m, Time.OneDay));
+                Assert.AreEqual(i == period - 1, indicator.IsReady);
+            }
+
+            Assert.AreEqual(period, indicator.Samples);
+        }
+
         private static Action<IndicatorBase<IBaseDataBar>, double> Assertion
         {
             get