Uh oh!
There was an error while loading. Please reload this page.
feat!: only expose indexer accessors the mock intercepts - #830
Merged
Conversation
A generated mock advertised setup and verification for both accessors of
every indexer, even when it intercepted only one. For a get-only indexer
int this[string shelf] { get; }
Setup[...].OnSet and Verify[...].Set(3) compiled and silently did
nothing: no setter body is emitted, so a write can never be recorded and
the verification could only ever report zero.
The generator now picks the facade from the accessors it actually emits
a body for, mirroring the property narrowing:
- IIndexerGetterOnlySetup<TValue, T1..Tn> / IIndexerSetterOnlySetup<
TValue, T1..Tn> (arities 1-4) replace IndexerSetup<TValue, T1..Tn> on
the setup surface, with parallel getter-only and setter-only builder
hierarchies so chaining through Returns/Throws/Do/TransitionTo stays
on the narrowed surface, plus Forever/OnlyOnce extensions for the
narrowed when-builders.
- VerificationIndexerGetterResult<TSubject, T1..Tn> and
VerificationIndexerSetterResult<TSubject, T1..Tn, TParameter> replace
VerificationIndexerResult<TSubject, TParameter> on the verify surface,
each taking only the member id of the accessor it exposes.
GetIndexerInterceptedAccessors reuses the property classification keyed
on the same Getter/Setter nullity that guards body emission, so the
surface cannot drift from what the proxy intercepts. This also covers
the cross-assembly case: an indexer such as { get; internal set; } whose
setter is invisible to the mock's assembly narrows to the getter.
BREAKING CHANGE: on an indexer the mock reads or writes but not both,
Setup[...].OnSet/OnGet, Setup[...].Returns/Throws/InitializeWith and
Verify[...].Set(...)/Got() no longer compile for the absent accessor.
Each previously compiled and silently had no effect. The library API is
additive; only generated mock surfaces narrow. Indexers with more than
four keys keep the full surface, as their setup types are generated
per-compilation.🚀 Benchmark ResultsDetails
Details
Details
Details
Details
Details
|
- add a cross-assembly test proving an indexer whose getter is inaccessible narrows to the setter-only surface - add a generator test proving indexers with more than four keys keep the full, unnarrowed surface for asymmetric accessors - link Mockolate0002 from the indexer single-accessor docs section, mirroring the property page - correct the AppendIndexerVerifyType summary: the setter result is additionally keyed by the value type
Uh oh!
There was an error while loading. Please reload this page.
github-actionsBot
added a commit
that referenced
this pull request
Jul 29, 2026
…e mock intercepts (#830) by Valentin Breuß
github-actionsBot
added a commit
that referenced
this pull request
Jul 29, 2026
…e mock intercepts (#830) by Valentin Breuß
vbreuss added a commit
that referenced
this pull request
Jul 29, 2026
The accessor narrowing introduced for indexers (#830) stopped at four keys: the narrowed setup/verify types only ship with the library for arities 1-4, so a five-key get-only indexer still offered OnSet and Verify[...].Set(...), which compiled and silently did nothing. Since the setup types for indexers with more than four keys are generated per-compilation anyway, generate the narrowed surface there too: - IndexerSetups.g.cs now emits IIndexerGetterOnlySetup / IIndexerSetterOnlySetup interface hierarchies (builders included) for each affected arity, implements them on the generated IndexerSetup class, and adds the Forever/OnlyOnce extensions for the narrowed when-builders. - Narrowed VerificationIndexerGetterResult / -SetterResult classes are generated in Mockolate.Verify, dispatching through the predicate-based MockRegistry.IndexerGot/IndexerSet overloads that the full VerificationIndexerResult already uses above four keys. Each takes only the member id and predicate of the accessor it exposes. - The facade selection in the mock emission now uses the plain accessor classification for every arity; the narrowed hierarchies are only generated for arities that need them, keyed on the same Getter/Setter nullity that guards body emission. BREAKING CHANGE: on an indexer with more than four keys that the mock reads or writes but not both, Setup[...].OnSet/OnGet, Setup[...].Returns/Throws/InitializeWith and Verify[...].Set(...)/Got() no longer compile for the absent accessor. Each previously compiled and silently had no effect. This closes the gap the four-key narrowing left; the shipped library API is unchanged.
This is addressed in release v3.4.0. |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
A generated mock advertised setup and verification for both accessors of every indexer, even when it intercepted only one. For a get-only indexer
Setup[...].OnSet and Verify[...].Set(3) compiled and silently did nothing: no setter body is emitted, so a write can never be recorded and the verification could only ever report zero.
The generator now picks the facade from the accessors it actually emits a body for, mirroring the property narrowing:
GetIndexerInterceptedAccessors reuses the property classification keyed on the same Getter/Setter nullity that guards body emission, so the surface cannot drift from what the proxy intercepts. This also covers the cross-assembly case: an indexer such as { get; internal set; } whose setter is invisible to the mock's assembly narrows to the getter.
BREAKING CHANGE: on an indexer the mock reads or writes but not both, Setup[...].OnSet/OnGet, Setup[...].Returns/Throws/InitializeWith and Verify[...].Set(...)/Got() no longer compile for the absent accessor. Each previously compiled and silently had no effect. The library API is additive; only generated mock surfaces narrow. Indexers with more than four keys keep the full surface, as their setup types are generated per-compilation.