Add another test case

Author: ningyougang

tests/src/test/scala/runtime/actionContainers/ActionLoopRustBasicTests.scala

@@ -138,7 +138,7 @@ class ActionLoopRustBasicTests extends BasicActionRunnerTests with WskActorSyste
                   |}
                 """.stripMargin)
 
-  it should "support array result" in {
+  it should "support return array result" in {
     val (out, err) = withActionLoopContainer { c =>
       val code = """
                    |extern crate serde_json;
@@ -162,4 +162,33 @@ class ActionLoopRustBasicTests extends BasicActionRunnerTests with WskActorSyste
       runRes shouldBe Some(JsArray(JsString("a"), JsString("b")))
     }
   }
+
+  it should "support array as input param" in {
+    val (out, err) = withActionLoopContainer { c =>
+      val code = """
+                   |extern crate serde_json;
+                   |
+                   |use serde_derive::{Deserialize, Serialize};
+                   |use serde_json::{Error, Value};
+                   |
+                   |
+                   |pub fn main(args: Value) -> Result<Value, Error> {
+                   |    let inputParam = args.as_array();
+                   |    let defaultOutput = ["c", "d"];
+                   |    match inputParam {
+                   |        None => serde_json::to_value(defaultOutput),
+                   |        Some(x) => serde_json::to_value(x),
+                   |    }
+                   |}
+                 """.stripMargin
+
+      val (initCode, _) = c.init(initPayload(code))
+
+      initCode should be(200)
+
+      val (runCode, runRes) = c.runForJsArray(runPayload(JsArray(JsString("a"), JsString("b"))))
+      runCode should be(200)
+      runRes shouldBe Some(JsArray(JsString("a"), JsString("b")))
+    }
+  }
 }