Add tests for async send action

tests/jballerina-unit-test/src/test/java/org/ballerinalang/test/worker/BasicWorkerTest.java

@@ -18,6 +18,7 @@
 
 import io.ballerina.runtime.api.utils.StringUtils;
 import io.ballerina.runtime.api.values.BMap;
+import org.ballerinalang.test.BAssertUtil;
 import org.ballerinalang.test.BCompileUtil;
 import org.ballerinalang.test.BRunUtil;
 import org.ballerinalang.test.CompileResult;
@@ -143,10 +144,28 @@ public void testAsyncSendAsExpression(String funcName) {
     public Object[] asyncSendAsExpressionFunctions() {
         return new Object[]{
                 "testAsyncSendAsExpressionReturnType",
-                "testAsyncSendAsExpressionWithPanic"
+                "testAsyncSendAsExpressionWithPanic",
+                "testAsyncSendAsExpressionWithTrapAndCheckExpr",
+                "testAsyncSendAsExpressionWithTypeCastExpr",
+                "testAsyncSendAsExpressionWithReturnStmt",
+                "testAsyncSendAsExpressionWithWildCardBindingPattern",
+                "testAsyncSendAsExpressionWithMatchStmt"
         };
     }
 
+    @Test
+    public void testAsyncSendNegative() {
+        CompileResult asyncSendNegativeResult =
+                BCompileUtil.compile("test-src/workers/worker_async_send_negative.bal");
+        int i = 0;
+        BAssertUtil.validateError(asyncSendNegativeResult, i++, "incompatible types: '()' is not an " +
+                "iterable collection", 19, 26);
+        BAssertUtil.validateError(asyncSendNegativeResult, i++, "compound assignment not allowed with " +
+                "nullable operands", 34, 9);
+        BAssertUtil.validateError(asyncSendNegativeResult, i++, "operator '+' not defined for 'int' and '()'", 34, 9);
+        Assert.assertEquals(i, asyncSendNegativeResult.getErrorCount());
+    }
+
     @AfterClass
     public void tearDown() {
         result = null;

tests/jballerina-unit-test/src/test/resources/test-src/workers/worker_async_send_as_expression.bal

@@ -1,6 +1,6 @@
-// Copyright (c) 2021 WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+// Copyright (c) 2023 WSO2 LLC. (http://www.wso2.com)
 //
-// WSO2 Inc. licenses this file to you under the Apache License,
+// WSO2 LLC. licenses this file to you under the Apache License,
 // Version 2.0 (the "License"); you may not use this file except
 // in compliance with the License.
 // You may obtain a copy of the License at
@@ -49,7 +49,91 @@ function testAsyncSendAsExpressionWithPanic() {
         x = <- w1;
     }
 
-     map<error??> mapResult = wait {w1, w2};
+     map<error?> mapResult = wait {w1, w2};
+}
+
+function testAsyncSendAsExpressionWithTrapAndCheckExpr() {
+    worker w1 {
+        () a = check (5 -> w2);
+        assertValueEquality(a, ());
+        error? b = trap (15 -> w2);
+        if b is error {
+            assertValueEquality("This is an error", b.message());
+        } else {
+            assertValueEquality(b, ());
+        }
+    }
+
+    worker w2 returns error? {
+        int x = <- w1;
+        if (x == 5) {
+            return error("This is an error");
+        }
+        x = <- w1;
+    }
+
+    map<error?> mapResult = wait {w1, w2};
+}
+
+function testAsyncSendAsExpressionWithTypeCastExpr() {
+    worker w1 {
+        () a = <()>(5 -> w2);
+        assertValueEquality((), a);
+    }
+
+    worker w2 {
+        int x = <- w1;
+        assertValueEquality(5, x);
+    }
+
+    _ = wait {w1, w2};
+}
+
+function testAsyncSendAsExpressionWithReturnStmt() {
+    worker w1 {
+        return (5 -> w2);
+    }
+
+    worker w2 {
+        int x = <- w1;
+        assertValueEquality(5, x);
+    }
+
+    _ = wait {w1, w2};
+}
+
+function testAsyncSendAsExpressionWithWildCardBindingPattern() {
+    worker w1 {
+        _ = 5 -> w2;
+    }
+
+    worker w2 {
+        int x = <- w1;
+        assertValueEquality(5, x);
+    }
+
+    _ = wait {w1, w2};
+}
+
+function testAsyncSendAsExpressionWithMatchStmt() {
+    worker w1 {
+        match (5 -> w2) {
+            () => {
+                return;
+            }
+
+            _ => {
+                panic error("This is an error");
+            }
+        }
+    }
+
+    worker w2 {
+        int x = <- w1;
+        assertValueEquality(5, x);
+    }
+
+    _ = wait {w1, w2};
 }
 
 type AssertionError distinct error;

tests/jballerina-unit-test/src/test/resources/test-src/workers/worker_async_send_negative.bal

@@ -0,0 +1,42 @@
+// Copyright (c) 2023 WSO2 LLC. (http://www.wso2.com)
+//
+// WSO2 LLC. licenses this file to you under the Apache License,
+// Version 2.0 (the "License"); you may not use this file except
+// in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+function testAsyncSendAsExpressionWithForEachStmt() {
+    worker w1 {
+        foreach var j in 5 -> w2 {
+
+        }
+    }
+
+    worker w2 {
+        int x = <- w1;
+    }
+
+    _ = wait {w1, w2};
+}
+
+function testAsyncSendAsExpressionWithCompoundAssignmentStmt() {
+    worker w1 {
+        int result = 4;
+        result += 5 -> w2;
+    }
+
+    worker w2 {
+        int x = <- w1;
+    }
+
+    _ = wait {w1, w2};
+}