Tests RESMGR TPM layer response codes.

- Adds tests that checks that Format One and Format Zero TPM errors
  originating from the TSS2_RESMGR_TPM_RC_LAYER are being interpreted
  as TpmResourceManager return codes.

Signed-off-by: Jesper Brynolf <[email protected]>

Author: Superhepper

tss-esapi/tests/integration_tests/error_tests/return_code_tests/mod.rs

@@ -5,6 +5,7 @@ mod esapi_tests;
 mod fapi_tests;
 mod muapi_tests;
 mod resource_manager_tests;
+mod resource_manager_tpm_tests;
 mod sapi_tests;
 mod tcti_tests;
 mod tpm_tests;

tss-esapi/tests/integration_tests/error_tests/return_code_tests/resource_manager_tpm_tests.rs

@@ -0,0 +1,51 @@
+// Copyright 2023 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+use std::convert::TryFrom;
+use tss_esapi::{
+    constants::tss::{TPM2_RC_ASYMMETRIC, TPM2_RC_SEQUENCE, TSS2_RESMGR_TPM_RC_LAYER},
+    error::{ReturnCode, TpmResponseCode},
+};
+
+#[test]
+fn test_valid_tpm_resmgr_format_zero_response_code() {
+    let expected_tss_rc = TSS2_RESMGR_TPM_RC_LAYER | TPM2_RC_SEQUENCE;
+    let actual_rc = ReturnCode::try_from(expected_tss_rc)
+        .expect("Failed to convert TPM2_RC_SEQUENCE in the TPM RESMGR layer to a ReturnCode.");
+
+    if let ReturnCode::TpmResourceManager(actual_tpm_response_code) = actual_rc {
+        assert!(
+            matches!(actual_tpm_response_code,TpmResponseCode::FormatZero(_)),
+            "TPM2_RC_SEQUENCE in the TPM RESMGR layer did not convert into the expected TpmResponseCode"
+        );
+    } else {
+        panic!("The TPM RESMGR layer did not convert into the expected ReturnCode");
+    }
+
+    assert_eq!(
+        expected_tss_rc,
+        actual_rc.into(),
+        "ReturnCode::TpmResourceManager did not convert into the expected TSS2_RC value"
+    );
+}
+
+#[test]
+fn test_valid_tpm_resmgr_format_one_response_code() {
+    let expected_tss_rc = TSS2_RESMGR_TPM_RC_LAYER | TPM2_RC_ASYMMETRIC;
+    let actual_rc = ReturnCode::try_from(expected_tss_rc)
+        .expect("Failed to convert TPM2_RC_ASYMMETRIC in the TPM RESMGR layer to a ReturnCode.");
+
+    if let ReturnCode::TpmResourceManager(actual_tpm_response_code) = actual_rc {
+        assert!(
+            matches!(actual_tpm_response_code, TpmResponseCode::FormatOne(_)),
+            "TPM2_RC_ASYMMETRIC in the TPM RESMGR layer did not convert into the expected TpmResponseCode"
+        );
+    } else {
+        panic!("The TPM RESMGR layer did not convert into the expected ReturnCode");
+    }
+
+    assert_eq!(
+        expected_tss_rc,
+        actual_rc.into(),
+        "ReturnCode::TpmResourceManager did not convert into the expected TSS2_RC value"
+    );
+}