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Changelog for 2019

2019-08-23

  • ⬆️ Improved and updated documentation, especially regarding analysis, verification, and general top-level views (life cycle, classes, packages).
  • ⬆️ Improved tests package structure, so that it's less confusing.

2019-03-30

  • ⬆️ Improved state hashing
  • ⬆️ More tests for the verifier
  • ✨ Proper JavaScript error reporting at runtime (e.g. invoking methods of null). (#52)
  • ✨ Proper JavaScript error reporting at for verification. To this end, a new violation, JSErrorViolation, was added. (#79)
  • ⬆️ Updated error message when calling bp.sync from a non-b-thread context.

2019-03-29

  • 🐛 Fixed a bug in the verifier, where a non-cyclic path ending in a visited node is not inspected.
  • 🐛 Hash code fixes.
  • ⬆️ Interface cleanups in the DfsBProgramVerifier: some method exposed the internal DFS nodes, and now they don't do that anymore.
  • ⬆️ More tests

2019-03-10

  • 🚮 Code cleanup.

2019-03-05

  • ✨ Serious makeover for the composable event suite. Users can no compose event sets using or,and, and not (and even xor, nor and nand) and get semantically correct sets that support verification. for example, this works:
EventSet sutA = theEventSet(E_A).or(E_B).and( theEventSet(E_B).or(E_C) );
EventSet sutB = theEventSet(E_C).or(E_B).and( theEventSet(E_B).or(E_A) );
assertEquals( sutA, sutB );
  • ⬆️ ComposableEventSet refactored to have equals and hashCode that can hold during verification.
  • ⬆️ More tests.

2019-02-10

  • ⬆️ Improved hash functions for ContinuationProgramState (affects b-thread sync snapshots as well).

2019-02-10

  • 🐛 Instances of the constant sets class EventSets now cannot be duplicated even when they are serialized.
  • 🐛 Fixed a bug in the verifier, where inspections were invoked twice.
  • ⬆️ Improved hash functions for SyncStatements and ComposableEventSets.
  • ⬆️ ExecutionTraces can now return the last event, in addition to returning the last state.
  • ⬆️ More tests.
  • 🚮 Removed duplicate functionality of "all events except" (had two classes that did this).
  • ⬆️ More robust JavaScript error handling.

2019-02-10

  • ⬆️ Updated the Tic-Tac-Toe code.
  • 🚮 Removed dependencies from pom.xml
  • ⬆️ Updated versions of dependencies in pom.xml.

2019-02-18

  • ⬆️ More tests

2019-02-18

  • ✨ Detection of multiple violations/general program space traversal: DFSBProgramVerifier can continue its traversal of b-program state space after a violation was detected.
  • ⬆️ Tests clean up after their executor services.
  • ⬆️ More tests

2019-02-06

  • ⬆️⬆️✨ Verification areas refactored and generalized towards code reuse. Inspectors and traces are now general, and do not assume they were created from the DFS verifier.
  • ⬆️ Improved state hashing algorithm in the hash-based visited state storage.
  • ⬆️ Updated documentation of the verification parts.
  • ⬆️ More tests.
  • ⬆️ Updated maven compiler plugin.
  • 🐛 Fixed a corner case where b-programs with immediate failed assertions would still attempt running certain machines.

2019-02-05

  • ⬆️ 🎉 Event selection strategies now accept BProgramSyncSnapshot, rather than a set of sync statements and external events.

2019-02-04

  • ✨ Testing infrastructure for execution traces.
  • ⬆️ More terminology cleanups in the api (e.g. "bsync" converted to "sync")

2019-02-03

  • ⬆️ VisitedStateStore now stores states, not DFS nodes. So it's more reusable that way.

2019-01-19

  • ✨ More tests.
  • ⬆️ BriefPrintDfsVerifierListener => PrintDfsVerifierListener, so that it's consistent with PrintBProgramRunnerListener.
  • ⬆️ Incorporated the "BPjs Tips" file to the central documentation.

2019-01-18

  • 🐛 Fixed a that cause equality tests of JS event sets to return false negatives.
  • 🐛 The bp object no longer collected by the state comparators.
  • ✨ BEvent has a bit more informative toString() method, that can also look abit into the JavaScript objects (not a full JSON.stringify, since we don't want to deal with arbirtarily large strings for a simple toString op. Not to mention circular references and such).
  • ✨ BEvent::hashCode now hashes data the event might have.
  • ✨ ScriptableUtils got some new utility methods that dig a bit into ScriptableObjects. This makes BPjs better at handling events with JS data objects.

2019-01-01

  • ⬆️ Hot BThread Cycle now more informative (reporting event and index of return-to).
  • ✨ Commandline verifier accepts optional --max-trace-length parameter, that limits the trace length during verification.
  • ⬆️ Removed the internal scope field from BThreadSyncSnapshots. This cuts the size of the serialized form significantly.
  • ⬆️ better hashing algorithm.
  • 🎉 Happy new year - 2018 changes moved here.

Earlier Changes

Legend:

  • 🔄 Change
  • ✨New feature
  • 🚮 Deprecation
  • ⬆️ Upgrade
  • 🐛 Bug fix