diff --git a/examples/example_host.cpp b/examples/example_host.cpp
index 7f2bc8c..ed96d3b 100644
--- a/examples/example_host.cpp
+++ b/examples/example_host.cpp
@@ -94,10 +94,14 @@ public:
 
     evmc::result call(const evmc_message& msg) noexcept final
     {
-        (void)msg;
         // TODO: Improve C++ API for result creation.
         evmc_result res{};
-        res.status_code = EVMC_FAILURE;
+        res.status_code = EVMC_REVERT;
+        auto output = new uint8_t[msg.input_size];
+        std::copy(&msg.input_data[0], &msg.input_data[msg.input_size], output);
+        res.output_size = msg.input_size;
+        res.output_data = output;
+        res.release = [](const evmc_result* r) noexcept { delete[] r->output_data; };
         return evmc::result{res};
     }
 
diff --git a/test/unittests/test_cpp.cpp b/test/unittests/test_cpp.cpp
index 15133bd..9f7c525 100644
--- a/test/unittests/test_cpp.cpp
+++ b/test/unittests/test_cpp.cpp
@@ -87,7 +87,6 @@ TEST(cpp, host)
     EXPECT_EQ(host.copy_code(a, 0, nullptr, 0), 0);
 
     host.selfdestruct(a, a);
-    EXPECT_EQ(host.call({}).gas_left, 0);
 
     auto tx = host.get_tx_context();
     EXPECT_EQ(host.get_tx_context().block_number, tx.block_number);
@@ -98,3 +97,26 @@ TEST(cpp, host)
 
     example_host_destroy_context(host_context);
 }
+
+TEST(cpp, host_call)
+{
+    // Use example host to test Host::call() method.
+
+    auto* host_context = example_host_create_context();
+    auto host = evmc::HostContext{host_context};
+
+    EXPECT_EQ(host.call({}).gas_left, 0);
+
+    auto msg = evmc_message{};
+    msg.gas = 1;
+    uint8_t input[] = {0xa, 0xb, 0xc};
+    msg.input_data = input;
+    msg.input_size = sizeof(input);
+
+    auto res = host.call(msg);
+    EXPECT_EQ(res.status_code, EVMC_REVERT);
+    EXPECT_EQ(res.output_size, msg.input_size);
+    EXPECT_TRUE(std::equal(&res.output_data[0], &res.output_data[res.output_size], msg.input_data));
+
+    example_host_destroy_context(host_context);
+}