Property based tests - #116
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On failure, each property now prints (via CsCheck print:) the full C# source of a self-contained [Fact] with the shrunk counterexample hard-coded, so a failing case can be pasted into the test project and debugged without CsCheck or a seed. One body template per property type (ReproTemplate); each ChangeSpec renders itself via ToCode(). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
CsCheck.SampleErrorMessage hard-truncates the printed value at 5000 chars, clipping the emitted reproduction method for larger shrunk schedules in CI. Route the full ready-to-run method to ITestOutputHelper (shown untruncated in CI logs) and keep only a compact schedule summary plus a pointer in the capped exception message. The output helper is captured before sampling so it is valid on whatever thread CsCheck's print callback runs on. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The message returned from print embedded the full schedule summary, which itself exceeded CsCheck's 5000-char cap for large schedules and showed a trailing " ...". Return only a short pointer to the test output (which holds the full, untruncated reproduction); the assertion diff still follows in the message. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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generate random sequences of commits and insert them in random orders and compare with a different order to ensure that the outcomes are the same.