DOC-4493 added set command examples (#426)

* DOC-4493 added set command examples

* DOC-4493 fixed nondeterministic test and renamed file

* DOC-4493 fixed nondeterministic test (again)

Author: andy-stark-redis

tests/Doc/CmdsSetExample.cs

@@ -0,0 +1,73 @@
+// EXAMPLE: cmds_set
+using StackExchange.Redis;
+// REMOVE_START
+using NRedisStack.Tests;
+namespace Doc;
+
+[Collection("DocsTests")]
+// REMOVE_END
+
+public class CmdsSetExample
+// REMOVE_START
+: AbstractNRedisStackTest, IDisposable
+// REMOVE_END
+{
+    // REMOVE_START
+    public CmdsSetExample(EndpointsFixture fixture) : base(fixture) { }
+
+    [SkippableFact]
+    // REMOVE_END
+    public void run()
+    {
+        // REMOVE_START
+        // This is needed because we're constructing ConfigurationOptions in the test before calling GetConnection
+        SkipIfTargetConnectionDoesNotExist(EndpointsFixture.Env.Standalone);
+        var _ = GetCleanDatabase(EndpointsFixture.Env.Standalone);
+        // REMOVE_END
+        var muxer = ConnectionMultiplexer.Connect("localhost:6379");
+        var db = muxer.GetDatabase();
+        // REMOVE_START
+        // Clear any keys here before using them in tests.
+        db.KeyDelete("myset");
+        // REMOVE_END
+
+        // STEP_START sadd
+        bool sAddResult1 = db.SetAdd("myset", "Hello");
+        Console.WriteLine(sAddResult1); // >>> True
+
+        bool sAddResult2 = db.SetAdd("myset", "World");
+        Console.WriteLine(sAddResult2); // >>> True
+
+        bool sAddResult3 = db.SetAdd("myset", "World");
+        Console.WriteLine(sAddResult2); // >>> False
+
+        RedisValue[] sAddResult4 = db.SetMembers("myset");
+        Array.Sort(sAddResult4);
+        Console.WriteLine(string.Join(", ", sAddResult4));
+        // >>> Hello, World
+        // STEP_END
+        // REMOVE_START
+        Assert.True(sAddResult1);
+        Assert.True(sAddResult2);
+        Assert.False(sAddResult3);
+        Assert.Equal("Hello, World", string.Join(", ", sAddResult4));
+        db.KeyDelete("myset");
+        // REMOVE_END
+
+        // STEP_START smembers
+        long sMembersResult1 = db.SetAdd(
+            "myset", new RedisValue[] { "Hello", "World" }
+        );
+        Console.WriteLine(sMembersResult1); // >>> 2
+
+        RedisValue[] sMembersResult2 = db.SetMembers("myset");
+        Array.Sort(sMembersResult2);
+        Console.WriteLine(string.Join(", ", sMembersResult2));
+        // >>> Hello, World
+        // STEP_END
+        // REMOVE_START
+        Assert.Equal(2, sMembersResult1);
+        Assert.Equal("Hello, World", string.Join(", ", sMembersResult2));
+        // REMOVE_END
+    }
+}