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+# Test with TD Payload
+TD-Shim has some test cases rely on TDX specific environment. Therefore, this simple test framework is created to support the test.
+
+## Test framework code structure
+All codes of test framework are located in [tests/test-td-payload](../tests/test-td-payload).
+
+```
+-- tests
+---- test-td-payload
+------ main.rs
+------ lib.rs
+------ test.json
+------ testtdinfo.rs
+------ ...
+```
+
+[main.rs](../tests/test-td-payload/src/main.rs): It defines strut `TestCases`. Main flow: Init `td_logger`-> Init heap-> Init `TestSuite` -> Build test cases(Parse test configuration data in CFV) -> Add test cases in `TestSuite` -> Run test cases -> Log test result. 
+
+[lib.rs](../tests/test-td-payload/src/lib.rs)：It defines enum `TestResult`、trait `TestCase` 、struct `TestSuite` and `TestSuite.run`. `TestSuite.run` will log result of each test case and count summary test result. 
+
+[test.json](../tests/test-td-payload/src/test.json): This is a json format test configuration data file. The structure should be correspond with struct `TestCases` in main.rs. It will be enrolled in CFV with tool [td-shim-enroll](../td-shim-tools/src/bin/td-shim-enroll/main.rs).
+
+[testtdinfo.rs](../tests/test-td-payload/src/testtdinfo.rs): This is a test case sample. Implement test struture and the `TestCase` trait(`setup` `run` `teardown` `get_name` `get_result`) for test structure.  
+
+## Build Test Image with Test TD Payload
+Refer to [README](../README.md), using PE as example:
+### Build test TD payload
+```
+$ cd tests
+$ cargo xbuild -p test-td-payload --target x86_64-unknown-uefi --release --features=main,tdx
+$ cd ..
+```
+
+### Generate final.bin
+```
+$ cargo xbuild -p td-shim --target x86_64-unknown-uefi --release --features=main,tdx
+$ cargo run -p td-shim-tools --bin td-shim-ld -- target/x86_64-unknown-uefi/release/ResetVector.bin target/x86_64-unknown-uefi/release/td-shim.efi target/x86_64-unknown-uefi/release/test-td-payload.efi -o target/x86_64-unknown-uefi/release/final-pe.bin
+```
+
+### Enroll json file in CFV
+```
+$ cargo run -p td-shim-tools --features="enroller" --bin td-shim-enroll target/x86_64-unknown-uefi/release/final-pe.bin -f F10E684E-3ABD-20E4-5932-8F973C355E57 tests/test-td-payload/src/test.json -o target/x86_64-unknown-uefi/release/final.test.bin
+```
+
+The output file **final.test.bin** with [test.json](../tests/test-td-payload/src/test.json) is located in the same folder with input final.bin. 
+
+## Json Test Configuration Data Example
+```
+{	    
+    "tcs001": {
+        "name": "tdinfo001",
+        "expected": {
+            "gpaw": 52,
+            "attributes": 0,
+            "max_vcpus": 1,
+            "num_vcpus": 1,
+            "rsvd": [0,0,0]
+        },
+        "result": "None",
+        "run": true  
+    }
+}
+```
+
+## Test Result Show
+```
+INFO - ---------------------------------------------
+INFO - Start to run tests.
+INFO - ---------------------------------------------
+INFO - [Test: tdinfo001]
+INFO - td_info data addr: 0x3f7ff9e8
+INFO - gpaw - 52
+INFO - max_vcpus - 1
+INFO - num_vcpus - 1
+INFO - rsvd - [0, 0, 0]
+INFO - [Test: tdinfo001] - Pass
+INFO - ---------------------------------------------
+INFO - [Test: tdinfo002]
+INFO - td_info data addr: 0x3f7ff9e8
+INFO - gpaw - 52
+INFO - Check max_vcpus fail - Expected 8: Actual 1
+INFO - [Test: tdinfo002] - Fail
+INFO - ---------------------------------------------
+INFO - [Test: tdinfo003]
+INFO - td_info data addr: 0x3f7ff9e8
+INFO - Check gpaw fail - Expected 48: Actual 52
+INFO - [Test: tdinfo003] - Fail
+INFO - ---------------------------------------------
+INFO - Test Result: Total run 3 tests; 1 passed; 2 failed
+```
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