diff --git a/pom.xml b/pom.xml
index 4ea96f5..567a6c8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -49,6 +49,11 @@
 			<email>galimovrf@gmail.com</email>
 			<url>https://github.com/galimru/</url>
 		</contributor>
+		<contributor>
+			<name>Desmond Vehar</name>
+			<email>desmondvehar@gmail.com</email>
+			<url>https://github.com/dvehar/</url>
+		</contributor>
 	</contributors>
 
 	<distributionManagement>
@@ -67,6 +72,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<java.version>1.5</java.version>
 		<gson.version>2.3.1</gson.version>
+		<junit.version>4.8.1</junit.version>
 	</properties>
 
 	<build>
@@ -162,5 +168,11 @@
 			<artifactId>gson</artifactId>
 			<version>${gson.version}</version>
 		</dependency>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>${junit.version}</version>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 </project>
diff --git a/src/main/java/net/gpedro/integrations/slack/JsonSerializable.java b/src/main/java/net/gpedro/integrations/slack/JsonSerializable.java
new file mode 100644
index 0000000..9b1cbe2
--- /dev/null
+++ b/src/main/java/net/gpedro/integrations/slack/JsonSerializable.java
@@ -0,0 +1,7 @@
+package net.gpedro.integrations.slack;
+
+import com.google.gson.JsonObject;
+
+public interface JsonSerializable {
+    JsonObject toJson();
+}
diff --git a/src/main/java/net/gpedro/integrations/slack/SlackAction.java b/src/main/java/net/gpedro/integrations/slack/SlackAction.java
deleted file mode 100644
index b05664d..0000000
--- a/src/main/java/net/gpedro/integrations/slack/SlackAction.java
+++ /dev/null
@@ -1,92 +0,0 @@
-package net.gpedro.integrations.slack;
-
-import com.google.gson.JsonObject;
-
-/**
- * @author Galimov Ruslan
- */
-public class SlackAction {
-
-	private static final String NAME = "name";
-	private static final String TEXT = "text";
-	private static final String TYPE = "type";
-	private static final String VALUE = "value";
-	private static final String CONFIRM = "confirm";
-	private static final String STYLE = "style";
-	private static final String OPTIONS = "options";
-	private static final String OPTION_GROUPS = "option_groups";
-	private static final String DATA_SOURCE = "data_source";
-	private static final String SELECTED_OPTIONS = "selected_options";
-	private static final String MIN_QUERY_LENGTH = "min_query_length";
-
-	private String name;
-	private String text;
-	private SlackActionType type;
-	private String value;
-	private SlackActionStyle style;
-
-	public SlackAction(String name, String text, SlackActionType type, String value) {
-		this.name = name;
-		this.text = text;
-		this.type = type;
-		this.value = value;
-	}
-
-	public String getName() {
-		return name;
-	}
-
-	public void setName(String name) {
-		this.name = name;
-	}
-
-	public String getText() {
-		return text;
-	}
-
-	public void setText(String text) {
-		this.text = text;
-	}
-
-	public SlackActionType getType() {
-		return type;
-	}
-
-	public void setType(SlackActionType type) {
-		this.type = type;
-	}
-
-	public String getValue() {
-		return value;
-	}
-
-	public void setValue(String value) {
-		this.value = value;
-	}
-
-	public SlackActionStyle getStyle() {
-		return style;
-	}
-
-	public void setStyle(SlackActionStyle style) {
-		this.style = style;
-	}
-
-	public JsonObject toJson() {
-		final JsonObject data = new JsonObject();
-		data.addProperty(NAME, name);
-		data.addProperty(TEXT, text);
-
-		if (type != null) {
-			data.addProperty(TYPE, type.getCode());
-		}
-
-		data.addProperty(VALUE, value);
-
-		if (style != null) {
-			data.addProperty(STYLE, style.getCode());
-		}
-
-		return data;
-	}
-}
diff --git a/src/main/java/net/gpedro/integrations/slack/SlackActionStyle.java b/src/main/java/net/gpedro/integrations/slack/SlackActionStyle.java
deleted file mode 100644
index 8383323..0000000
--- a/src/main/java/net/gpedro/integrations/slack/SlackActionStyle.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package net.gpedro.integrations.slack;
-
-/**
- * @author Galimov Ruslan
- */
-public enum SlackActionStyle {
-	DEFAULT("default"), PRIMARY("primary"), DANGER("danger");
-
-	private String code;
-
-	SlackActionStyle(String code) {
-		this.code = code;
-	}
-
-	public String getCode() {
-		return code;
-	}
-}
diff --git a/src/main/java/net/gpedro/integrations/slack/SlackActionType.java b/src/main/java/net/gpedro/integrations/slack/SlackActionType.java
deleted file mode 100644
index 74bccd5..0000000
--- a/src/main/java/net/gpedro/integrations/slack/SlackActionType.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package net.gpedro.integrations.slack;
-
-/**
- * @author Galimov Ruslan
- */
-public enum SlackActionType {
-	BUTTON("button"), SELECT("select");
-
-	private String code;
-
-	SlackActionType(String code) {
-		this.code = code;
-	}
-
-	public String getCode() {
-		return code;
-	}
-
-}
diff --git a/src/main/java/net/gpedro/integrations/slack/SlackAttachment.java b/src/main/java/net/gpedro/integrations/slack/SlackAttachment.java
index dbc1cc8..d7f8dcf 100644
--- a/src/main/java/net/gpedro/integrations/slack/SlackAttachment.java
+++ b/src/main/java/net/gpedro/integrations/slack/SlackAttachment.java
@@ -9,6 +9,7 @@
 import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonPrimitive;
+import net.gpedro.integrations.slack.attachment.action.SlackAction;
 
 /**
  * Represents an attachment in a slack webhook JSON message.
diff --git a/src/main/java/net/gpedro/integrations/slack/attachment/action/BasicButtonSlackAction.java b/src/main/java/net/gpedro/integrations/slack/attachment/action/BasicButtonSlackAction.java
new file mode 100644
index 0000000..8de7eb5
--- /dev/null
+++ b/src/main/java/net/gpedro/integrations/slack/attachment/action/BasicButtonSlackAction.java
@@ -0,0 +1,29 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonObject;
+
+/**
+ * @author Desmond Vehar
+ */
+public class BasicButtonSlackAction extends ButtonSlackAction {
+
+	private static final String URL = "url";
+
+	private String url;
+
+	public BasicButtonSlackAction(String name, String text, String url) {
+		super(name, text, Type.BUTTON);
+
+		checkArgForNull(URL, url);
+		this.url = url;
+	}
+
+	public JsonObject toJson() {
+		final JsonObject data = super.toJson();
+
+		data.addProperty(URL, url);
+
+		return data;
+	}
+
+}
diff --git a/src/main/java/net/gpedro/integrations/slack/attachment/action/ButtonSlackAction.java b/src/main/java/net/gpedro/integrations/slack/attachment/action/ButtonSlackAction.java
new file mode 100644
index 0000000..d834dc7
--- /dev/null
+++ b/src/main/java/net/gpedro/integrations/slack/attachment/action/ButtonSlackAction.java
@@ -0,0 +1,45 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonObject;
+import net.gpedro.integrations.slack.JsonSerializable;
+
+/**
+ * @author Desmond Vehar
+ */
+public abstract class ButtonSlackAction extends SlackAction {
+	private static final String STYLE = "style";
+
+	private Style style;
+
+	ButtonSlackAction(String name, String text, Type type) {
+		super(name, text, type);
+	}
+
+	public void setStyle(Style style) {
+		this.style = style;
+	}
+
+	public JsonObject toJson() {
+		final JsonObject data = super.toJson();
+
+		if (style != null) {
+			data.addProperty(STYLE, style.getCode());
+		}
+
+		return data;
+	}
+
+	public enum Style {
+		DEFAULT("default"), PRIMARY("primary"), DANGER("danger");
+
+		private String code;
+
+		Style(String code) {
+			this.code = code;
+		}
+
+		public String getCode() {
+			return code;
+		}
+	}
+}
diff --git a/src/main/java/net/gpedro/integrations/slack/attachment/action/InteractiveButtonSlackAction.java b/src/main/java/net/gpedro/integrations/slack/attachment/action/InteractiveButtonSlackAction.java
new file mode 100644
index 0000000..e0713da
--- /dev/null
+++ b/src/main/java/net/gpedro/integrations/slack/attachment/action/InteractiveButtonSlackAction.java
@@ -0,0 +1,62 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonObject;
+import net.gpedro.integrations.slack.JsonSerializable;
+
+/**
+ * @author Desmond Vehar
+ */
+public class InteractiveButtonSlackAction extends ButtonSlackAction {
+
+	private static final String VALUE = "value";
+	private static final String CONFIRM = "confirm";
+
+	private String value;
+	private Confirm confirm;
+
+	public InteractiveButtonSlackAction(String name, String text, String value) {
+		super(name, text, Type.BUTTON);
+
+		checkArgForNull(VALUE, value);
+		this.value = value;
+	}
+
+	public void setConfirm(Confirm confirm) {
+		this.confirm = confirm;
+	}
+
+	public JsonObject toJson() {
+		final JsonObject data = super.toJson();
+
+		data.addProperty(VALUE, value);
+
+		if (confirm != null) {
+			data.add(CONFIRM, confirm.toJson());
+		}
+
+		return data;
+	}
+
+	public static class Confirm implements JsonSerializable {
+		private String title;
+		private String text;
+		private String ok_text;
+		private String dismiss_text;
+
+		public Confirm(String title, String text, String ok_text, String dismiss_text) {
+			this.title = title;
+			this.text = text;
+			this.ok_text = ok_text;
+			this.dismiss_text = dismiss_text;
+		}
+
+		public JsonObject toJson() {
+			JsonObject data = new JsonObject();
+			data.addProperty("title", title);
+			data.addProperty("text", text);
+			data.addProperty("ok_text", ok_text);
+			data.addProperty("dismiss_text", dismiss_text);
+			return data;
+		}
+	}
+}
diff --git a/src/main/java/net/gpedro/integrations/slack/attachment/action/InteractiveSelectSlackAction.java b/src/main/java/net/gpedro/integrations/slack/attachment/action/InteractiveSelectSlackAction.java
new file mode 100644
index 0000000..cdccc79
--- /dev/null
+++ b/src/main/java/net/gpedro/integrations/slack/attachment/action/InteractiveSelectSlackAction.java
@@ -0,0 +1,60 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+import net.gpedro.integrations.slack.JsonSerializable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author Desmond Vehar
+ */
+public class InteractiveSelectSlackAction extends SlackAction {
+
+	private static final String OPTIONS = "options";
+
+	private List<Option> options;
+
+	public InteractiveSelectSlackAction(String name, String text) {
+		super(name, text, Type.SELECT);
+
+		this.options = new ArrayList<Option>();
+	}
+
+	public InteractiveSelectSlackAction(String name, String text, List<Option> options) {
+		super(name, text, Type.SELECT);
+
+		checkArgForNull(OPTIONS, options);
+		this.options = options;
+	}
+
+	public JsonObject toJson() {
+		final JsonObject data = super.toJson();
+
+		JsonArray array = new JsonArray();
+		for (Option option : options) {
+			JsonObject obj = new JsonObject();
+			obj.addProperty("text", option.text);
+			obj.addProperty("value", option.value);
+			array.add(obj);
+		}
+		data.add(OPTIONS, array);
+
+		return data;
+	}
+
+	public static class Option implements JsonSerializable {
+		private String text;
+		private String value;
+
+		public Option(String text, String value) {
+			this.text = text;
+			this.value = value;
+		}
+
+		public JsonObject toJson() {
+			return new JsonObject();
+		}
+	}
+}
diff --git a/src/main/java/net/gpedro/integrations/slack/attachment/action/SlackAction.java b/src/main/java/net/gpedro/integrations/slack/attachment/action/SlackAction.java
new file mode 100644
index 0000000..4828168
--- /dev/null
+++ b/src/main/java/net/gpedro/integrations/slack/attachment/action/SlackAction.java
@@ -0,0 +1,74 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonObject;
+import net.gpedro.integrations.slack.JsonSerializable;
+
+/**
+ * @author Galimov Ruslan
+ * @author Desmond Vehar
+ */
+public abstract class SlackAction implements JsonSerializable {
+
+	private static final String NAME = "name";
+	private static final String TEXT = "text";
+	private static final String TYPE = "type";
+
+	private String name;
+	private String text;
+	private Type type;
+
+	static void checkArgForNull(String argName, Object arg) {
+		if (arg == null) {
+			throw new IllegalArgumentException(argName + " can not be null");
+		}
+	}
+
+	SlackAction(String name, String text, Type type) {
+		checkArgForNull(NAME, name);
+		checkArgForNull(TEXT, text);
+		checkArgForNull(TYPE, type);
+		this.name = name;
+		this.text = text;
+		this.type = type;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getText() {
+		return text;
+	}
+
+	public void setText(String text) {
+		this.text = text;
+	}
+
+	public JsonObject toJson() {
+		final JsonObject data = new JsonObject();
+
+		data.addProperty(NAME, name);
+		data.addProperty(TEXT, text);
+		data.addProperty(TYPE, type.getCode());
+
+		return data;
+	}
+
+	public enum Type {
+		BUTTON("button"), SELECT("select");
+
+		private String code;
+
+		Type(String code) {
+			this.code = code;
+		}
+
+		public String getCode() {
+			return code;
+		}
+	}
+}
diff --git a/src/main/test/net/gpedro/integrations/slack/attachment/action/BasicButtonSlackActionTest.java b/src/main/test/net/gpedro/integrations/slack/attachment/action/BasicButtonSlackActionTest.java
new file mode 100644
index 0000000..25a2f32
--- /dev/null
+++ b/src/main/test/net/gpedro/integrations/slack/attachment/action/BasicButtonSlackActionTest.java
@@ -0,0 +1,21 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonObject;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class BasicButtonSlackActionTest {
+    @Test
+    public void toJson() {
+        BasicButtonSlackAction action = new BasicButtonSlackAction("name", "text", "url");
+        action.setStyle(ButtonSlackAction.Style.DANGER);
+
+        JsonObject json = action.toJson();
+        Assert.assertEquals(json.entrySet().size(), 5);
+        Assert.assertEquals(json.get("name").getAsString(), "name");
+        Assert.assertEquals(json.get("text").getAsString(), "text");
+        Assert.assertEquals(json.get("url").getAsString(), "url");
+        Assert.assertEquals(json.get("type").getAsString(), "button");
+        Assert.assertEquals(json.get("style").getAsString(), ButtonSlackAction.Style.DANGER.getCode());
+    }
+}
\ No newline at end of file
diff --git a/src/main/test/net/gpedro/integrations/slack/attachment/action/ButtonSlackActionTest.java b/src/main/test/net/gpedro/integrations/slack/attachment/action/ButtonSlackActionTest.java
new file mode 100644
index 0000000..4394c7b
--- /dev/null
+++ b/src/main/test/net/gpedro/integrations/slack/attachment/action/ButtonSlackActionTest.java
@@ -0,0 +1,34 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonObject;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author Desmond Vehar
+ */
+public class ButtonSlackActionTest {
+	@Test
+	public void toJsonWithStyle() {
+		ButtonSlackAction action = new ButtonSlackAction("name", "text", SlackAction.Type.BUTTON) {};
+		action.setStyle(ButtonSlackAction.Style.PRIMARY);
+
+		JsonObject json = action.toJson();
+		Assert.assertEquals(json.entrySet().size(), 4);
+		Assert.assertEquals(json.get("name").getAsString(), "name");
+		Assert.assertEquals(json.get("text").getAsString(), "text");
+		Assert.assertEquals(json.get("type").getAsString(), "button");
+		Assert.assertEquals(json.get("style").getAsString(), ButtonSlackAction.Style.PRIMARY.getCode());
+	}
+
+	@Test
+	public void toJsonWithoutStyle() {
+		ButtonSlackAction action = new ButtonSlackAction("name", "text", SlackAction.Type.BUTTON) {};
+
+		JsonObject json = action.toJson();
+		Assert.assertEquals(json.entrySet().size(), 3);
+		Assert.assertEquals(json.get("name").getAsString(), "name");
+		Assert.assertEquals(json.get("text").getAsString(), "text");
+		Assert.assertEquals(json.get("type").getAsString(), "button");
+	}
+}
diff --git a/src/main/test/net/gpedro/integrations/slack/attachment/action/InteractiveButtonSlackActionTest.java b/src/main/test/net/gpedro/integrations/slack/attachment/action/InteractiveButtonSlackActionTest.java
new file mode 100644
index 0000000..ff2ccd5
--- /dev/null
+++ b/src/main/test/net/gpedro/integrations/slack/attachment/action/InteractiveButtonSlackActionTest.java
@@ -0,0 +1,49 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonObject;
+import net.gpedro.integrations.slack.JsonSerializable;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author Desmond Vehar
+ */
+public class InteractiveButtonSlackActionTest {
+	@Test
+	public void toJsonWithoutValue() {
+		try {
+			new InteractiveButtonSlackAction("name", "text", null);
+			Assert.fail("value is null: an exception should have been thrown");
+		} catch (IllegalArgumentException e) {
+			Assert.assertEquals("value can not be null", e.getMessage());
+		}
+	}
+
+	@Test
+	public void toJsonWithoutConfirm() {
+		InteractiveButtonSlackAction action = new InteractiveButtonSlackAction("name", "text", "value");
+		JsonObject json = action.toJson();
+		Assert.assertEquals(json.entrySet().size(), 4);
+		Assert.assertEquals(json.get("name").getAsString(), "name");
+		Assert.assertEquals(json.get("text").getAsString(), "text");
+		Assert.assertEquals(json.get("type").getAsString(), "button");
+		Assert.assertEquals(json.get("value").getAsString(), "value");
+	}
+
+	@Test
+	public void toJsonWithConfirm() {
+		InteractiveButtonSlackAction action = new InteractiveButtonSlackAction("name", "text", "value");
+		action.setConfirm(new InteractiveButtonSlackAction.Confirm("confirm_title", "confirm_text", "confirm_ok_text", "confirm_dismiss_text"));
+
+		JsonObject json = action.toJson();
+		Assert.assertEquals(json.entrySet().size(), 5);
+		Assert.assertEquals(json.get("name").getAsString(), "name");
+		Assert.assertEquals(json.get("text").getAsString(), "text");
+		Assert.assertEquals(json.get("type").getAsString(), "button");
+		Assert.assertEquals(json.get("value").getAsString(), "value");
+		Assert.assertEquals(json.getAsJsonObject("confirm").get("title").getAsString(), "confirm_title");
+		Assert.assertEquals(json.getAsJsonObject("confirm").get("text").getAsString(), "confirm_text");
+		Assert.assertEquals(json.getAsJsonObject("confirm").get("ok_text").getAsString(), "confirm_ok_text");
+		Assert.assertEquals(json.getAsJsonObject("confirm").get("dismiss_text").getAsString(), "confirm_dismiss_text");
+	}
+}
diff --git a/src/main/test/net/gpedro/integrations/slack/attachment/action/InteractiveSelectSlackActionTest.java b/src/main/test/net/gpedro/integrations/slack/attachment/action/InteractiveSelectSlackActionTest.java
new file mode 100644
index 0000000..e342f69
--- /dev/null
+++ b/src/main/test/net/gpedro/integrations/slack/attachment/action/InteractiveSelectSlackActionTest.java
@@ -0,0 +1,55 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+import net.gpedro.integrations.slack.JsonSerializable;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * @author Desmond Vehar
+ */
+public class InteractiveSelectSlackActionTest {
+    @Test
+    public void toJsonWithNullOptions() {
+        try {
+            new InteractiveSelectSlackAction("name", "text", null);
+            Assert.fail("options is null: an exception should have been thrown");
+        } catch (IllegalArgumentException e) {
+            Assert.assertEquals("options can not be null", e.getMessage());
+        }
+    }
+
+    @Test
+    public void toJsonWithEmptyOptions() {
+        InteractiveSelectSlackAction action = new InteractiveSelectSlackAction("name", "text");
+        JsonObject json = action.toJson();
+        Assert.assertEquals(json.entrySet().size(), 4);
+        Assert.assertEquals(json.get("name").getAsString(), "name");
+        Assert.assertEquals(json.get("text").getAsString(), "text");
+        Assert.assertEquals(json.get("type").getAsString(), SlackAction.Type.SELECT.getCode());
+        Assert.assertEquals(json.get("options").getAsJsonArray(), new JsonArray());
+    }
+
+
+    @Test
+    public void toJsonWithNonEmptyOptions() {
+        List<InteractiveSelectSlackAction.Option> options = Arrays.asList(
+            new InteractiveSelectSlackAction.Option("text1", "value1"),
+            new InteractiveSelectSlackAction.Option("text2", "value2"));
+        InteractiveSelectSlackAction action = new InteractiveSelectSlackAction("name", "text", options);
+        JsonObject json = action.toJson();
+        Assert.assertEquals(json.entrySet().size(), 4);
+        Assert.assertEquals(json.get("name").getAsString(), "name");
+        Assert.assertEquals(json.get("text").getAsString(), "text");
+        Assert.assertEquals(json.get("type").getAsString(), SlackAction.Type.SELECT.getCode());
+        Assert.assertEquals(json.get("options").getAsJsonArray().size(), 2);
+        Assert.assertEquals(json.get("options").getAsJsonArray().get(0).getAsJsonObject().get("text").getAsString(), "text1");
+        Assert.assertEquals(json.get("options").getAsJsonArray().get(0).getAsJsonObject().get("value").getAsString(), "value1");
+        Assert.assertEquals(json.get("options").getAsJsonArray().get(1).getAsJsonObject().get("text").getAsString(), "text2");
+        Assert.assertEquals(json.get("options").getAsJsonArray().get(1).getAsJsonObject().get("value").getAsString(), "value2");
+    }
+}
diff --git a/src/main/test/net/gpedro/integrations/slack/attachment/action/SlackActionTest.java b/src/main/test/net/gpedro/integrations/slack/attachment/action/SlackActionTest.java
new file mode 100644
index 0000000..17d4c0e
--- /dev/null
+++ b/src/main/test/net/gpedro/integrations/slack/attachment/action/SlackActionTest.java
@@ -0,0 +1,53 @@
+package net.gpedro.integrations.slack.attachment.action;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+import net.gpedro.integrations.slack.JsonSerializable;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author Desmond Vehar
+ */
+public class SlackActionTest {
+    @Test
+    public void nullName() {
+        try {
+            new SlackAction(null, "text", SlackAction.Type.BUTTON) { };
+            Assert.fail("name is null: an exception should have been thrown");
+        } catch (IllegalArgumentException e) {
+            Assert.assertEquals("name can not be null", e.getMessage());
+        }
+    }
+
+    @Test
+    public void nullText() {
+        try {
+            new SlackAction("name", null, SlackAction.Type.BUTTON) { };
+            Assert.fail("text is null: an exception should have been thrown");
+        } catch (IllegalArgumentException e) {
+            Assert.assertEquals("text can not be null", e.getMessage());
+        }
+    }
+
+
+    @Test
+    public void nullType() {
+        try {
+            new SlackAction("name", "text", null) { };
+            Assert.fail("type is null: an exception should have been thrown");
+        } catch (IllegalArgumentException e) {
+            Assert.assertEquals("type can not be null", e.getMessage());
+        }
+    }
+
+    @Test
+    public void toJson() {
+        SlackAction action = new SlackAction("name", "text", SlackAction.Type.SELECT) { };
+        JsonObject json = action.toJson();
+        Assert.assertEquals(json.entrySet().size(), 3);
+        Assert.assertEquals(json.get("name").getAsString(), "name");
+        Assert.assertEquals(json.get("text").getAsString(), "text");
+        Assert.assertEquals(json.get("type").getAsString(), SlackAction.Type.SELECT.getCode());
+    }
+}