DOC-2836 added bitmap doc code samples (#280)

tests/Doc/Bitmap_tutorial.cs

@@ -0,0 +1,66 @@
+// EXAMPLE: bitmap_tutorial
+// HIDE_START
+
+using NRedisStack.Tests;
+using StackExchange.Redis;
+
+// HIDE_END
+
+// REMOVE_START
+namespace Doc;
+[Collection("DocsTests")]
+// REMOVE_END
+
+// HIDE_START
+public class Bitmap_tutorial
+{
+
+    [SkipIfRedis(Is.OSSCluster)]
+    public void run()
+    {
+        var muxer = ConnectionMultiplexer.Connect("localhost:6379");
+        var db = muxer.GetDatabase();
+        //REMOVE_START
+        // Clear any keys here before using them in tests.
+        db.KeyDelete("pings:2024-01-01-00:00");
+        //REMOVE_END
+        // HIDE_END
+
+
+        // STEP_START ping
+        bool res1 = db.StringSetBit("pings:2024-01-01-00:00", 123, true);
+        Console.WriteLine(res1);    // >>> 0
+
+        bool res2 = db.StringGetBit("pings:2024-01-01-00:00", 123);
+        Console.WriteLine(res2);    // >>> True
+
+        bool res3 = db.StringGetBit("pings:2024-01-01-00:00", 456);
+        Console.WriteLine(res3);    // >>> False
+        // STEP_END
+
+        // Tests for 'ping' step.
+        // REMOVE_START
+        Assert.False(res1);
+        Assert.True(res2);
+        Assert.False(res3);
+        // REMOVE_END
+
+
+        // STEP_START bitcount
+        bool res4 = db.StringSetBit("pings:2024-01-01-00:00", 123, true);
+        long res5 = db.StringBitCount("pings:2024-01-01-00:00");
+        Console.WriteLine(res5);    // >>> 1
+        // STEP_END
+
+        // Tests for 'bitcount' step.
+        // REMOVE_START
+        Assert.True(res4);
+        Assert.Equal(1, res5);
+        // REMOVE_END
+
+
+        // HIDE_START
+    }
+}
+// HIDE_END
+