Move CLI samples to sample repo

spring-cloud-function-samples/scf-aws-day1/src/test/java/oz/spring/aws/FunctionAwsApplicationTests.java

@@ -0,0 +1,27 @@
+package oz.spring.aws;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.cloud.function.adapter.aws.FunctionInvoker;
+
+class FunctionAwsApplicationTests {
+	
+	@Test
+	void validateFunctionInvocation() throws Exception {
+		System.setProperty("MAIN_CLASS", FunctionAwsApplication.class.getName());
+		FunctionInvoker invoker = new FunctionInvoker("uppercase");
+		
+		InputStream targetStream = new ByteArrayInputStream("\"hello aws\"".getBytes());
+		ByteArrayOutputStream output = new ByteArrayOutputStream();
+		invoker.handleRequest(targetStream, output, null);
+		String result = new String(output.toByteArray(), StandardCharsets.UTF_8);
+		assertThat(result).isEqualTo("\"HELLO AWS\"");
+	}
+
+}