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0.3.293K downloads/modart-lang/test ↗New releases in your daily digest, changelog included.

A framework for checking values against expectations and building custom expectations.

Release timeline

7 releases since 2023

2023202420252026

20232026

One column per quarter.

0.3.24 Sept 20262 sources agree
Bump test dev dependency constraint.
Bump test dev dependency constraint.

Add isNotA<R>() check extension as a convenience in place of
not((it) => it.isA<R>()).

Require Dart 3.11

Improve speed of pretty printing for large collections.

Improve formatting for failures involving unexpected exceptions.

Improve formatting for failed String equality checks - indent string diff
lines.

Fix a bug when using asynchronous conditions with mayEmit or
mayEmitMultiple. Note that extensions using nestAsync should synchronously
forward exceptions from that call.

Fix a bug when printing a failure message involving a value that returns an
empty output from toString().

Annotated async expectations with @awaitNotRequired since tests are safely
held open until expectations complete so it's not always necessary to
explicitly await them.

Output more compact failure messages for simple expectations.
Open source →
0.3.11 Jul 2025
Directly compare keys across actual and expected Map instances when checking deep collection equality and all the keys can be directly compared for eq

dart-lang/test

Directly compare keys across actual and expected Map instances when checking deep collection equality and all the keys can be directly compared for equality. This maintains the path into a nested collection for typical cases of checking for equality against a purely value collection.
Always wrap Condition descriptions in angle brackets.
Add containsMatchingInOrder and containsEqualInOrder to replace the combined functionality in containsInOrder.
Replace pairwiseComparesTo with pairwiseMatches.
Fix a bug where printing the result of a failed deep quality check would fail with a TypeError when comparing large Map instances.
Increase SDK constraint to ^3.5.0.
Clarify this package is experimental.

0.3.029 Jan 2024

Remove the Condition class and the it() utility. Replace calls to (it()..someExpectation()) with ((it) => it.someExpectation()).

Breaking Changes
- Remove the Condition class and the it() utility. Replace calls to (it()..someExpectation()) with ((it) => it.someExpectation()).
Add class modifiers to restrict extension of implementation classes.

0.2.22 May 2023

Return the first failure from softCheck and softCheckAsync as documented, instead of the last failure when there are multiple failures.

Return the first failure from softCheck and softCheckAsync as documented, instead of the last failure when there are multiple failures.
Add example because usage and mention the "reason" name in the migration guide.
Add ComparableChecks with comparison expectations for subject types that implement Comparable.

0.2.07 Feb 2023

nest and nestAsync take Iterable Function() arguments for label instead of String.

Breaking Changes
- checkThat renamed to check.
- nest and nestAsync take Iterable<String> Function() arguments for label instead of String.
- Async expectation extensions completes, throws, emits, and emitsError no longer return a Future<Subject>. Instead they take an optional Condition argument which can check expectations that would have been checked on the returned subject.
- nestAsync no longer returns a Subject, callers must pass the followup Condition to the nullable argument.
- Remove the which extension on Future<Subject>.
- matches renamed to matchesPattern and now accepts a Pattern argument, instead of limiting to RegExp.
Added an example.
Include a stack trace in the failure description for unexpected errors from Futures or Streams.