add skeleton for signup tests

src/signup.rs

@@ -228,3 +228,33 @@ pub(crate) async fn create_user(
         _ => Err(CreateUserErrorKind::UnknownDBError.into()),
     }
 }
+
+#[cfg(test)]
+mod test {
+    use crate::{
+        db::get_pool,
+        test_utils::{get_user, server_with_pool},
+    };
+
+    const GOOD_FORM: &str = "username=test_user&displayname=Test+User&password=aaaa&pw_verify=aaaa";
+
+    // various ways to fuck up signup
+    const MISMATCH_PW_FORM: &str =
+        "username=test_user&displayname=Test+User&password=aaaa&pw_verify=bbbb";
+    const SHORT_PW_FORM: &str = "username=test_user&displayname=Test+User&password=a&pw_verify=a";
+    const LONG_USERNAME_FORM: &str = "username=test_user12345678901234567890&displayname=Test+User&
+    password=aaaa&pw_verify=aaaa";
+
+    #[tokio::test]
+    async fn post_create_user_success() {
+        todo!()
+    }
+
+    async fn get_create_user() {
+        todo!()
+    }
+
+    async fn handle_signup_success() {
+        todo!()
+    }
+}