Validate project with test cases from `cedar-integration-tests`

[skuenzli]

Validate project with test cases from cedar-integration-tests, so that we can be confident cedar-py provides a high-fidelity integration with cedar.

See the how the cedar-java project's SharedIntegrationTests class for an example of consuming the cedar-integration-tests test definitions from a binding project.

Note: we'll need to get a copy of the test definitions into this project. There are a few ways to do that:

• copy the files
• add a git submodule (do people still use submodules?)
• dynamically retrieve (and cache the files) during setUp

[skuenzli]

Will start by executing tests defined in cedar-policy/cedar/cedar-integration-tests/tests/example_use_cases_doc/.

Note that cedar-java currently runs the following tests:

private static final String[] JSON_TEST_FILES = {
        "tests/example_use_cases_doc/1a.json",
        "tests/example_use_cases_doc/2a.json",
        "tests/example_use_cases_doc/2b.json",
        "tests/example_use_cases_doc/2c.json",
        "tests/example_use_cases_doc/3a.json",
        "tests/example_use_cases_doc/3b.json",
        "tests/example_use_cases_doc/3c.json",
        // "tests/example_use_cases_doc/4a.json", // currently disabled due to action attributes
        // "tests/example_use_cases_doc/4c.json", // currently disabled due to action attributes
        // "tests/example_use_cases_doc/4d.json", // currently disabled due to action attributes
        // "tests/example_use_cases_doc/4e.json", // currently disabled due to action attributes
        // "tests/example_use_cases_doc/4f.json", // currently disabled due to action attributes
        // "tests/example_use_cases_doc/5b.json", // currently disabled due to action attributes
        // Need to change extension handling to match natural JSON CRs
        "tests/ip/1.json",
        "tests/ip/2.json",
        "tests/ip/3.json",
        "tests/multi/1.json",
        "tests/multi/2.json",
        // "tests/multi/3.json", // currently disabled because it uses action attributes
        // "tests/multi/4.json", // currently disabled because it uses action attributes
        // "tests/multi/5.json", // currently disabled because it uses action attributes
    };

[skuenzli]

Now running and passing all example_use_cases_doc except for 4c.

No code changes needed.

[skuenzli]

Trying to figure out a (good) way to include/use the test data without adding all of cedar as a git subtree.

Some options: https://stackoverflow.com/questions/23937436/add-subdirectory-of-remote-repo-with-git-subtree

[skuenzli]

Ended up integrating cedar project via submodule.

[skuenzli]

Now executing the example use cases tests via CedarExampleUseCasesIntegrationTestCase

Will add other tests shortly.

[skuenzli]

Added coverage for all other kinds of tests in the cedar-integration-tests/tests directory. Now executing the following test suites:

• decimal (2/2)
• example_use_cases_doc (12/13)
• ip (3/3)
• multi (3/5)

In total, cedar-py now passes 69 tests generated from the test suites and skips 13:

========================================================================================== 69 passed, 13 skipped in 0.59s ===========================================================================================

[skuenzli]

Closed by #9