diff --git a/proxmox-api-macro/Cargo.toml b/proxmox-api-macro/Cargo.toml
index c5c6af1a..645d9fbc 100644
--- a/proxmox-api-macro/Cargo.toml
+++ b/proxmox-api-macro/Cargo.toml
@@ -16,6 +16,7 @@ syn = { version = "1.0", features = [ "full" ] }
 [dev-dependencies]
 futures = "0.3"
 proxmox = { path = "../proxmox" }
+proxmox-api = { path = "../proxmox-api", features = [ "test-harness" ] }
 serde = "1.0"
 serde_derive = "1.0"
 serde_json = "1.0"
diff --git a/proxmox-api-macro/tests/api1.rs b/proxmox-api-macro/tests/api1.rs
index 29ef4864..cc6890ec 100644
--- a/proxmox-api-macro/tests/api1.rs
+++ b/proxmox-api-macro/tests/api1.rs
@@ -42,6 +42,61 @@ pub fn create_ticket(_param: Value) -> Result<Value, Error> {
     panic!("implement me");
 }
 
+#[test]
+fn create_ticket_schema_check() {
+    const TEST_METHOD: ::proxmox::api::ApiMethod = ::proxmox::api::ApiMethod::new(
+        &::proxmox::api::ApiHandler::Sync(&api_function_create_ticket),
+        &::proxmox::api::schema::ObjectSchema::new(
+            "Create or verify authentication ticket.",
+            &[
+                (
+                    "password",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new(
+                        "The secret password or a valid ticket.",
+                    )
+                    .schema(),
+                ),
+                (
+                    "username",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new("User name")
+                        .max_length(64)
+                        .schema(),
+                ),
+            ],
+        ),
+    )
+    .returns(
+        &::proxmox::api::schema::ObjectSchema::new(
+            "A ticket.",
+            &[
+                (
+                    "CSRFPreventionToken",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new(
+                        "Cross Site Request Forgerty Prevention Token.",
+                    )
+                    .schema(),
+                ),
+                (
+                    "ticket",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new("Auth ticket.").schema(),
+                ),
+                (
+                    "username",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new("User name.").schema(),
+                ),
+            ],
+        )
+        .schema(),
+    )
+    .protected(true);
+    assert_eq!(TEST_METHOD, API_METHOD_CREATE_TICKET);
+}
+
 #[api(
     input: {
         properties: {
@@ -85,6 +140,61 @@ pub fn create_ticket_direct(username: String, password: String) -> Result<&'stat
     Ok("an:invalid:ticket")
 }
 
+#[test]
+fn create_ticket_direct_schema_check() {
+    const TEST_METHOD: ::proxmox::api::ApiMethod = ::proxmox::api::ApiMethod::new(
+        &::proxmox::api::ApiHandler::Sync(&api_function_create_ticket_direct),
+        &::proxmox::api::schema::ObjectSchema::new(
+            "Create or verify authentication ticket.",
+            &[
+                (
+                    "password",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new(
+                        "The secret password or a valid ticket.",
+                    )
+                    .schema(),
+                ),
+                (
+                    "username",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new("User name")
+                        .max_length(64)
+                        .schema(),
+                ),
+            ],
+        ),
+    )
+    .returns(
+        &::proxmox::api::schema::ObjectSchema::new(
+            "A ticket.",
+            &[
+                (
+                    "CSRFPreventionToken",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new(
+                        "Cross Site Request Forgerty Prevention Token.",
+                    )
+                    .schema(),
+                ),
+                (
+                    "ticket",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new("Auth ticket.").schema(),
+                ),
+                (
+                    "username",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new("User name.").schema(),
+                ),
+            ],
+        )
+        .schema(),
+    )
+    .protected(true);
+    assert_eq!(TEST_METHOD, API_METHOD_CREATE_TICKET_DIRECT);
+}
+
 #[api(
     input: {
         properties: {
@@ -124,6 +234,24 @@ pub fn func_with_option(verbose: Option<bool>) -> Result<(), Error> {
     Ok(())
 }
 
+#[test]
+fn func_with_option_schema_check() {
+    const TEST_METHOD: ::proxmox::api::ApiMethod = ::proxmox::api::ApiMethod::new(
+        &::proxmox::api::ApiHandler::Sync(&api_function_func_with_option),
+        &::proxmox::api::schema::ObjectSchema::new(
+            "Optional parameter",
+            &[(
+                "verbose",
+                true,
+                &::proxmox::api::schema::BooleanSchema::new("Verbose output.").schema(),
+            )],
+        ),
+    )
+    .protected(false);
+
+    assert_eq!(TEST_METHOD, API_METHOD_FUNC_WITH_OPTION);
+}
+
 struct RpcEnv;
 impl proxmox::api::RpcEnvironment for RpcEnv {
     fn set_result_attrib(&mut self, name: &str, value: Value) {
diff --git a/proxmox-api-macro/tests/ext-schema.rs b/proxmox-api-macro/tests/ext-schema.rs
index 32c07363..b879eb34 100644
--- a/proxmox-api-macro/tests/ext-schema.rs
+++ b/proxmox-api-macro/tests/ext-schema.rs
@@ -25,6 +25,19 @@ pub fn get_archive(archive_name: String) {
     let _ = archive_name;
 }
 
+#[test]
+fn get_archive_schema_check() {
+    const TEST_METHOD: ::proxmox::api::ApiMethod = ::proxmox::api::ApiMethod::new(
+        &::proxmox::api::ApiHandler::Sync(&api_function_get_archive),
+        &::proxmox::api::schema::ObjectSchema::new(
+            "Get an archive.",
+            &[("archive-name", false, &NAME_SCHEMA)],
+        ),
+    )
+    .protected(false);
+    assert_eq!(TEST_METHOD, API_METHOD_GET_ARCHIVE);
+}
+
 #[api(
     input: {
         properties: {
@@ -41,6 +54,19 @@ pub fn get_archive_2(param: Value, rpcenv: &mut dyn RpcEnvironment) -> Result<Va
     Ok(json!("test"))
 }
 
+#[test]
+fn get_archive_2_schema_check() {
+    const TEST_METHOD: ::proxmox::api::ApiMethod = ::proxmox::api::ApiMethod::new(
+        &::proxmox::api::ApiHandler::Sync(&api_function_get_archive_2),
+        &::proxmox::api::schema::ObjectSchema::new(
+            "Get an archive.",
+            &[("archive-name", false, &NAME_SCHEMA)],
+        ),
+    )
+    .protected(false);
+    assert_eq!(TEST_METHOD, API_METHOD_GET_ARCHIVE_2);
+}
+
 #[api(
     input: {
         properties: {
@@ -59,3 +85,21 @@ pub fn get_data(param: Value) -> Result<(), Error> {
     let _ = param;
     Ok(())
 }
+
+#[test]
+fn get_data_schema_test() {
+    const TEST_METHOD: ::proxmox::api::ApiMethod = ::proxmox::api::ApiMethod::new(
+        &::proxmox::api::ApiHandler::Sync(&api_function_get_data),
+        &::proxmox::api::schema::ObjectSchema::new(
+            "Get data.",
+            &[(
+                "data",
+                false,
+                &::proxmox::api::schema::ArraySchema::new("The data", &NAME_SCHEMA).schema(),
+            )],
+        ),
+    )
+    .protected(false);
+
+    assert_eq!(TEST_METHOD, API_METHOD_GET_DATA);
+}
diff --git a/proxmox-api-macro/tests/types.rs b/proxmox-api-macro/tests/types.rs
index c6c83cce..af1b2421 100644
--- a/proxmox-api-macro/tests/types.rs
+++ b/proxmox-api-macro/tests/types.rs
@@ -16,21 +16,88 @@ use serde_json::Value;
 //#[derive(Clone, Debug, Deserialize, Serialize)]
 pub struct OkString(String);
 
+#[test]
+fn ok_string() {
+    const TEST_SCHEMA: &'static ::proxmox::api::schema::Schema =
+        &::proxmox::api::schema::StringSchema::new("A string")
+            .format(&schema::ApiStringFormat::Enum(&["ok", "not-ok"]))
+            .schema();
+    assert_eq!(TEST_SCHEMA, OkString::API_SCHEMA);
+}
+
 #[api]
-/// A Foo.
-pub struct Foo {
+/// An example of a simple struct type.
+pub struct TestStruct {
     /// A test string.
-    test: String,
+    test_string: String,
 
     /// An optional auto-derived value for testing:
     another: Option<String>,
 }
 
-// generates the following without the '_' prefix in the constant:
-impl OkString {
-    pub const _API_SCHEMA: &'static schema::Schema = &schema::StringSchema::new("A string")
-        .format(&schema::ApiStringFormat::Enum(&["ok", "not-ok"]))
+#[test]
+fn test_struct() {
+    pub const TEST_SCHEMA: &'static ::proxmox::api::schema::Schema =
+        &::proxmox::api::schema::ObjectSchema::new(
+            "An example of a simple struct type.",
+            &[
+                (
+                    "test_string",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new("A test string.").schema(),
+                ),
+                (
+                    "another",
+                    true,
+                    &::proxmox::api::schema::StringSchema::new(
+                        "An optional auto-derived value for testing:",
+                    )
+                    .schema(),
+                ),
+            ],
+        )
         .schema();
+
+    assert_eq!(TEST_SCHEMA, TestStruct::API_SCHEMA);
+}
+
+#[api]
+#[derive(Deserialize)]
+#[serde(rename_all = "kebab-case")]
+/// An example of a struct with renamed fields.
+pub struct RenamedStruct {
+    /// A test string.
+    test_string: String,
+
+    /// An optional auto-derived value for testing:
+    #[serde(rename = "SomeOther")]
+    another: Option<String>,
+}
+
+#[test]
+fn renamed_struct() {
+    const TEST_SCHEMA: &'static ::proxmox::api::schema::Schema =
+        &::proxmox::api::schema::ObjectSchema::new(
+            "An example of a struct with renamed fields.",
+            &[
+                (
+                    "test-string",
+                    false,
+                    &::proxmox::api::schema::StringSchema::new("A test string.").schema(),
+                ),
+                (
+                    "SomeOther",
+                    true,
+                    &::proxmox::api::schema::StringSchema::new(
+                        "An optional auto-derived value for testing:",
+                    )
+                    .schema(),
+                ),
+            ],
+        )
+        .schema();
+
+    assert_eq!(TEST_SCHEMA, RenamedStruct::API_SCHEMA);
 }
 
 #[api]
@@ -44,6 +111,22 @@ pub enum Selection {
     SelectionNumberThree,
 }
 
+#[test]
+fn selection_test() {
+    const TEST_SCHEMA: &'static ::proxmox::api::schema::Schema =
+        &::proxmox::api::schema::StringSchema::new(
+            "A selection of either \'onekind\', \'another-kind\' or \'selection-number-three\'.",
+        )
+        .format(&::proxmox::api::schema::ApiStringFormat::Enum(&[
+            "onekind",
+            "another-kind",
+            "selection-number-three",
+        ]))
+        .schema();
+
+    assert_eq!(TEST_SCHEMA, Selection::API_SCHEMA);
+}
+
 // Initial test:
 #[api(
     input: {
@@ -62,3 +145,21 @@ pub fn string_check(arg: Value, selection: Selection) -> Result<bool, Error> {
     let _ = selection;
     panic!("body")
 }
+
+#[test]
+fn string_check_schema_test() {
+    const TEST_METHOD: ::proxmox::api::ApiMethod = ::proxmox::api::ApiMethod::new(
+        &::proxmox::api::ApiHandler::Sync(&api_function_string_check),
+        &::proxmox::api::schema::ObjectSchema::new(
+            "Check a string.",
+            &[
+                ("arg", false, OkString::API_SCHEMA),
+                ("selection", false, Selection::API_SCHEMA),
+            ],
+        ),
+    )
+    .returns(&::proxmox::api::schema::BooleanSchema::new("Whether the string was \"ok\".").schema())
+    .protected(false);
+
+    assert_eq!(TEST_METHOD, API_METHOD_STRING_CHECK);
+}