Plural ICU expressions depend on the locale (different languages have different plural forms). Until now the locale was hard coded as `en-US`.
For compatibility reasons, if you use ivy with AOT and bootstrap your app with `bootstrapModule` then the `LOCALE_ID` token will be set automatically for ivy, which is then used to get the correct plural form.
If you use JIT, you need to define the `LOCALE_ID` provider on the module that you bootstrap.
For `TestBed` you can use either `configureTestingModule` or `overrideProvider` to define that provider.
If you don't use the compat mode and start your app with `renderComponent` you need to call `ɵsetLocaleId` manually to define the `LOCALE_ID` before bootstrap. We expect this to change once we start adding the new i18n APIs, so don't rely on this function (there's a reason why it's a private export).
PR Close#29249
This is a new feature of the Ivy TestBed.
A common user pattern is to test one component with another. This is
commonly done by creating a `TestFixture` component which exercises the
main component under test.
This pattern is more difficult if the component under test is declared in an
NgModule but not exported. In this case, overriding the module is necessary.
In g3 (and View Engine), it's possible to use an NgSummary to override the
recompilation of a component, and depend on its AOT compiled factory. The
way this is implemented, however, specifying a summary for a module
effectively overrides much of the TestBed's other behavior. For example, the
following is legal:
```typescript
TestBed.configureTestingModule({
declarations: [FooCmp, TestFixture],
imports: [FooModule],
aotSummaries: [FooModuleNgSummary],
});
```
Here, `FooCmp` is declared in both the testing module and in the imported
`FooModule`. However, because the summary is provided, `FooCmp` is not
compiled within the context of the testing module, but _is_ made available
for `TestFixture` to use, even if it wasn't originally exported from
`FooModule`.
This pattern breaks in Ivy - because summaries are a no-op, this amounts
to a true double declaration of `FooCmp` which raises an error.
Fixing this in user code is possible, but is difficult to do in an
automated or backwards compatible way. An alternative solution is
implemented in this PR.
This PR attempts to capture the user intent of the following previously
unsupported configuration:
```typescript
TestBed.configureTestingModule({
declarations: [FooCmp, TestFixture],
imports: [FooModule],
});
```
Note that this is the same as the configuration above in Ivy, as the
`aotSummaries` value provided has no effect.
The user intent here is interpreted as follows:
1) `FooCmp` is a pre-existing component that's being used in the test
(via import of `FooModule`). It may or may not be exported by this
module.
2) `FooCmp` should be part of the testing module's scope. That is, it
should be visible to `TestFixture`. This is because it's listed in
`declarations`.
This feature effectively makes the `TestBed` testing module special. It's
able to declare components without compiling them, if they're already
compiled (or configured to be compiled) in the imports. And crucially, the
behavior matches the first example with the summary, making Ivy backwards
compatible with View Engine for tests that use summaries.
PR Close#30578
PR #29290 introduced a new `TestBed.get` signature and deprecated the existing one.
This raises a lot of TSLint deprecation warnings in projects using a strict TS config (see #29905 for context), so we are temporarily removing the `@deprecated` annotation in favor of a plain text warning until we properly fix it.
Refs #29905
Fixes FW-1336
PR Close#30514
BREAKING CHANGE
In PR #19558, we fixed a bug in `TestBed.overrideProvider` where
eager providers were not being instantiated correctly. However,
it turned out that since this bug had been around for quite a bit,
many apps were relying on the broken behavior where the providers
would not be instantiated. To assist in the transition, the
`TestBed.deprecatedOverrideProvider` method was temporarily
introduced to mimic the old behavior so that apps would have a
longer time period to migrate their code.
2 years and 3 versions later, it is time to remove the temporary
method. This commit removes `TestBed.deprecatedOverrideProvider`
altogether. Any usages of `TestBed.deprecatedOverrideProvider`
should be replaced with `TestBed.overrideProvider`. This may mean
that providers that were not created before will now be instantiated,
which could mean that your tests need to provide more mocks or stubs
for the dependencies of the newly instantiated providers.
PR Close#30576
There is an encoding issue with using delta `Δ`, where the browser will attempt to detect the file encoding if the character set is not explicitly declared on a `<script/>` tag, and Chrome will find the `Δ` character and decide it is window-1252 encoding, which misinterprets the `Δ` character to be some other character that is not a valid JS identifier character
So back to the frog eyes we go.
```
__
/ɵɵ\
( -- ) - I am ineffable. I am forever.
_/ \_
/ \ / \
== == ==
```
PR Close#30546
Previously, `R3TestBedCompiler` was dynamically defining an
`@NgModule`-decorated `CompilerModule` class inside a method call.
Since ngcc only processes top-level classes, this class was not
transformed causing failures in unit tests (see #30121 for details).
This commit fixes it by using `compileNgModuleDefs()` directly (similar
to the fix in #30037).
Fixes#30121
PR Close#28530
This commit unifies the way auxillary RootScopeModule and DynamicTestModule are compiled in R3TestBed by calling `compileNgModuleDefs` explicitly for RootScopeModule. This change also resolves the problem where TestBed's code was used from the @angular/core NPM package: due to the "jit" flag, the @NgModule decorator on the RootScopeModule was transformed to RootScopeModule.decorators = [...], but actual ngModuleDef was never defined.
PR Close#30037
Prior to this change, components created via TestBed.createComponent in the same test were placed into the same root context, which caused problems in conjunction with fixture.autoDetectChanges usage in the same test. Specifically, change detection was triggered immediately for created component (starting from the 2nd one) even if it was not required/desired. This commit makes Ivy and VE behavior consistent: now every component created via TestBed.createComponent is isolated from each other. Current solution uses host element id naming convention, which is not ideal, but helps avoid public API surface changes at this point (we might revisit this approach later).
Note: this commit also adds extra tests to verify bootstrap and change detection behavior in case of multiple components in `bootstrap` array in @NgModule, to make sure this behavior is aligned between Ivy and VE.
PR Close#29981
Overriding multi provider values (providers with `multi: true` flag) via TestBed require additional handling: all existing multi-provider values for the same token should be removed from the override list, so that they are not included into the final value of a given provider. This commit adds this logic to make sure we handle multi providers correctly.
PR Close#29919
Plural ICU expressions depend on the locale (different languages have different plural forms). Until now the locale was hard coded as `en-US`.
For compatibility reasons, if you use ivy with AOT and bootstrap your app with `bootstrapModule` then the `LOCALE_ID` token will be set automatically for ivy, which is then used to get the correct plural form.
If you use JIT, you need to define the `LOCALE_ID` provider on the module that you bootstrap.
For `TestBed` you can use either `configureTestingModule` or `overrideProvider` to define that provider.
If you don't use the compat mode and start your app with `renderComponent` you need to call `ɵsetLocaleId` manually to define the `LOCALE_ID` before bootstrap. We expect this to change once we start adding the new i18n APIs, so don't rely on this function (there's a reason why it's a private export).
PR Close#29249
In order to be backwards compatible with View Engine, Ivy should log
errors by default in the TestBed error handler rather than re-throwing
them. Re-throwing the errors is a breaking change that causes issues with
libraries like ngrx that have async behavior and custom error handling.
This logging approach has issues (for both VE and Ivy) because it can allow
tests to pass inappropriately if errors are thrown inside listeners. However,
since re-throwing would be breaking and requires a larger redesign, we should
wait until post-Ivy.
PR Close#29853
The `Δ` caused issue with other infrastructure, and we are temporarily
changing it to `ɵɵ`.
This commit also patches ts_api_guardian_test and AIO to understand `ɵɵ`.
PR Close#29850
Adds an overload to TestBed.get making parameters strongly typed and
deprecated previous signature that accepted types `any`. The function
still returns `any` to prevent build breakages, but eventually stronger
type checks will be added so a future Angular version will break builds
due to additional type checks.
See previous breaking change - #13785
Issue #26491
PR Close#29290
When an @NgModule is imported more than once in the testing module (for
example it appears in the imports of more than one module, or if it's
literally listed multiple times), then TestBed had a bug where the
providers for the module would be overridden many times.
This alone was problematic but would not break tests. However, the original
value of the providers field of the ngInjectorDef was saved each time, and
restored in the same order. Thus, if the provider array was [X], and
overrides were applied twice, then the override array would become
[X, X'] and then [X, X', X, X']. However, on the second override the state
[X, X'] would be stored as original. The array would then be restored to
[X] and then [X, X'].
Each test, therefore, would continue to double the size of the providers
array for the module, eventually exhausting the browser's memory.
This commit adds a Set to track when overrides have been applied to a module
and refrain from applying them more than once.
PR Close#29571
Prior to this change, recompilation of AOT-compiled components in TestBed may fail when template override is requested. That was happening due to the `styleUrls` field defined for a Component, thus switching its state to "requires resolution" (i.e. having external resources) at compile time. This change avoids this issue by storing styles and resetting `styleUrls` field before recompilation. Once compilation is done, saved styles are patched back onto Component def.
PR Close#29555
Prior to this change, Ivy version of TestBed was not designed to support the logic to avoid recompilations - most of the Components/Directives/Pipes were recompiled for each test, even if there were no overrides defined for a given Type. Additional checks to avoid recompilation were introduced in one of the previous commits (0244a2433e), but there were still some corner cases that required attention. In order to support the necessary logic better, Ivy TestBed was rewritten/refactored. Main results of this rewrite are:
* no recompilation for Components/Directives/Pipes without overrides
* the logic to restore state between tests (isolate tests) was improved
* transitive scopes calculation no longer performs recompilation (it works with compiled defs)
As a result of these changes we see reduction in memory consumption (3.5-4x improvement) and pefromance increase (4-4.5x improvement).
PR Close#29483
The API changes are due to enabling strict checks in TypeScript (via `strict: true`).
The payload size changes in `polyfills.js` are due to more browser APIs being patched in recent versions (e.g. `fetch`, `customElement v1`).
PR Close#28219
Previously, the transitive scope calculation could lead into re-compiling
the same module multiple times. This fix ensures we cannot get into this loop.
It should be fixed more completely (e.g. more cases) once FW-1178 is resolved.
PR Close#29402
Prior to this change, we always recompile all Components/Directives/Pipes even if they were AOT-compiled and had no overrides. This is causing problems in case we try to recompile a Component with "templateUrl" or "styleUrls" (which were already resolved in case of AOT) and generally this unnecessary work that TestBed was doing is not required. This commit adds extra logic to check whether a Component/Directive/Pipe already have compiled NG def (like ngComponentDef) and whether there are no overrides present - in this case recompilation is skipped. Recompilation is also skipped in case a Component/Directive has only Provider overrides - in this situation providers resolver function is patched to reflect overrides. Provider overrides are very common in g3, thus this code path ensures no full recompilation.
PR Close#29294
HACK: This is NOT the correct implementation for deprecatedOverrideProvider.
We do not plan to implement this at all since the API is deprecated and
scheduled for removal in V8. This hack is here temporarily for Ivy testing
until we transition apps inside Google to the overrideProvider API. At that
point, we will be able to remove this method entirely. In the meantime, we
can use overrideProvider here to test apps with Ivy that don't care about
eager instantiation. This fixes 97% of cases in our blueprint.
PR Close#29324
Previously, ngtsc would resolve forward references while evaluating the
bootstrap, declaration, imports, and exports fields of NgModule types.
However, when generating the resulting ngModuleDef, the forward nature of
these references was not taken into consideration, and so the generated JS
code would incorrectly reference types not yet declared.
This commit fixes this issue by introducing function closures in the
NgModuleDef type, similarly to how NgComponentDef uses them for forward
declarations of its directives and pipes arrays. ngtsc will then generate
closures when required, and the runtime will unwrap them if present.
PR Close#29198
`ng_module` will now include an `src/r3_symbol.d.ts` when compiling the core package under `ngc` togather with `dts bundling`, This is due that `ngcc` relies on this file to be present, but the `r3_symbols` file which is not part of our public api.
With this change, we can now ship an addition dts file which is flattened.
PR Close#28884
Since we build and publish the individual packages
using Bazel and `build.sh` has been removed, we can
safely remove the `rollup.config.js` files which are no
longer needed because the `ng_package` bazel rule
automatically handles the rollup settings and globals.
PR Close#28646
Currently errors thrown inside event handler in Ivy are caught and forwarded to the `ErrorHandler`, however this means that if they happen during a unit test, the test won't fail. These changes add a test-specific `ErrorHandler` that throws the error rather than logging it out.
PR Close#28707
Ivy allows Components to extend Directives (but not the other way around) and as a result we may have Component and Directive annotations present at the same time. The logic that resolves annotations to pick the necessary one didn't take this into account and as a result Components were recognized as Directives (and vice versa) in case of inheritance. This change updates the resolution logic by picking known annotation that is the nearest one (in inheritance tree) and compares it with expected type. That should help avoid mis-classification of Components/Directives during resolution.
PR Close#28439
TestBed.compileComponents has always been an async API. However,
ViewEngine tolerated using this API in a synchronous manner if the
components declared in the testing module did not have any async
resources (templateUrl, styleUrls). This change makes the ivy TestBed
mirror this tolerance by configuring such components synchronously.
Ref: FW-992
PR Close#28350
This changes restores parity between VE TestBed and R3TestBed logic related to retrieving tokens using TestBed.get function. Now R3TestBed also tries to retrieve tokens from Compiler Injector.
PR Close#28196
When we look for matching annotations in TestBed, we should always take the last
matching annotation. Otherwise, we will return superclass data for subclasses,
which would have unintended consequences like directives matching the wrong selectors.
PR Close#28195
Fixes the `ModuleWithComponentFactories.componentFactories` not being populated when calling `compileModuleAndAllComponentsSync` in Ivy.
These changes resolve FW-929.
PR Close#28112
The implementation of the `compileComponents` method for `TestBedRender3` was missing.
We now pass each component through `resolveComponentResources` when `TestBed.compileComponents` is called so that `templateUrl` and `styleUrls` can be resolved asynchronously and used once `TestBed.createComponent` is called.
The component's metadata are overriden in `TestBed` instead of mutating the original metadata like this is the case outside of TestBed. The reason for that is that we need to ensure that we didn't mutate anything so that the following tests can run with the same original metadata, otherwise we it could trigger or hide some errors.
FW-553 #resolve
PR Close#27778
When an @NgModule decorator executes, the module is added to a queue in
render3/jit/module.ts. Reading an ngComponentDef property causes this queue
to be flushed, ensuring that the component gets the correct module scope
applied.
In before_each.ts, a global beforeEach is added to all Angular tests which
calls TestBed.resetTestingModule() prior to running each test. This in turn
clears the module compilation queue (which is correct behavior, as modules
declared within the test should not leak outside of it via the queue).
So far this is okay. But before the first test runs, the module compilation
queue is full of modules declared in global scope. No definitions have been
read, so no flushes of the queue have been triggered. The global beforeEach
triggers a reset of the queue, aborting all of the in-progress global
compilation, breaking those classes when they're later used in tests.
This commit adds logic to TestBedRender3 to respect the state of the module
queue before the TestBed is first initialized or reset. The queue is flushed
prior to such an operation to ensure global compilation is allowed to finish
properly.
With this fix, a platform-server test now passes (previously the <my-child>
element was not detected as a component, because the encompassing module
never finished compilation.
FW-887 #resolve
PR Close#28033
Previously when testing code injected the Compiler, it received the
top-level Compiler implementation defined in linker/compiler.ts
(and governed by the __PRE_R3__ switch). Code running under the
TestBed, however, should always use a TestBed-aware Compiler
implementation.
This commit adds such an implementation to the TestBedRender3,
which passes compiled modules through the _compileNgModule()
function.
With this change, 3 formerly disabled router integration tests
now pass.
FW-855 #resolve
PR Close#28033
An @NgModule with invalid provider declarations produces errors under
normal circumstances. However, within the TestBed two small issues with
provider overrides interfered with the correct production of these errors:
1. a 'null' provider object caused a premature crash when the TestBed
attempted to check for a 'provide' property on it with hasOwnProperty().
2. the array of providers would have an empty override array appended to it
for each input provider, which would pollute the error messages produced
down the line.
This commit fixes both of these issues, by 1) checking for null and 2)
filtering out the empty override arrays.
Testing strategy: future commits change the way the TestBed compiles
modules, causing tests to become sensitive to this bug if not fixed.
PR Close#28033
TestBed used to have its own implementation of the `transitiveScopesFor` function, customized for TestBed needs (to compile NgModules). This change unifies the `transitiveScopesFor` function usage by importing it from the `jit/module.ts` script and adding extra argument to configure its behavior (how to compile NgModule), so that TestBed can leverage it.
PR Close#27860
`R3TestBed` allows consumers to configure a "testing module", declare components, override various metadata, etc. To do this, it implements its own JIT compilation, where components/directives/modules have Ivy definition fields generated based on testing metadata. It results in tests interfering with each other. One test might override something in a component that another test tries to use normally, causing failures.
In order to resolve this problem, we store current components/directives/modules defs before applying overrides and re-compiling. Once the test is complete, we restore initial defs, so the next tests interact with "clean" components.
PR Close#27786
Forward refs in some places (like imports/export/providers/viewProviders/queries) were not resolved before passing to compilation phase. Now we resolve missing refs before invoking compile function.
PR Close#27737
Prior to this change, provider overrides defined via TestBed.overrideProvider were not applied to Components/Directives. Now providers are taken into account while compiling Components/Directives (metadata is updated accordingly before being passed to compilation).
PR Close#27693
In some cases in our tests we can define multiple overrides for a given class. As a result, only the last override is actually applied due to the fact that we store overrides in a Type<->Override map. This update changes the logic to keep all overrides defined in a given test for a Type (i.e. Type<->Override[] map) and applies them one by one at resolution phase. This behavior is more inline with the previous TestBed.
PR Close#27734
Olivier Combe
Alex Rickabaugh
cexbrayat
Kara Erickson
Ben Lesh
George Kalpakas
Andrew Kushnir
Carlos Ortiz García
JiaLiPassion
Kristiyan Kostadinov
Alan
Greg Magolan
Wassim Chegham
Paul Gschwendtner
Jeremy Elbourn
Alex Eagle
Misko Hevery