test(material-experimental/chips) Port unit tests for mdc chips

[vanessanschmitt]

Ported existing unit tests as follows:

• Copied chip-remove.spec.
• Copied chip-input.spec and changed its test component template to use grid/row.
• Copied chip-list.spec basic tests to chip-set.spec.
• Copied chip-list.spec to chip-listbox.spec and removed form-field integration, mat-chip-remove integration, and related keyboard shortcuts.
• Copied chip-list.spec to chip-grid.spec and removed the selection behavior. Updated keyboard tests to reflect that it is using GridFocusKeyManager, which has both an active row and an active column. Updated some of the form tests where the value was being changed via selection to change the value in a different way, like by adding a chip.
• Copied chip.spec basic tests to chip.spec.
• Copied chip.spec to chip-option.spec and removed logic related to user removal of the chip.
• Copied chip.spec to chip-row.spec and removed selection logic.

Also updated component code to fix bugs/missing features that were caught by the unit tests:

• Added missing ControlValueAccessor method setDisabledState to mat-chip-listbox and mat-chip-grid
• Stopped overwriting user-defined tab index in mat-chip-listbox and mat-chip-grid.
• Removed role from empty mat-chip-listbox and mat-chip-grid.
• Added a new subscription in mat-chip-set to chip destroyed events, and moved the logic that updates the lastDestroyedChipIndex out of the removed subscription into the new destroyed subscription.
• Replaced _optionChip and _rowChips ViewChildren in mat-chip-listbox and mat-chip-grid with just overriding _chips, to fix bugs where the _chips.changes subscription was trying to do things with _optionChips/_rowChips but those QueryLists were still out of date.
• Added placeholder setter to mat-chip-grid.
• Added value setter to mat-chip-listbox.
• Added injected animationMode to mat-chip and its subcomponents.
• Updated rippleConfig to be injected into mat-chip and its subcomponents.
• Switched click handler to mousedown handler in mat-chip-row.
• Added mat-chip-remove class to remove icon.

[vanessanschmitt]

@jelbourn

[jelbourn]

Could you expand the commit message to talk a bit about any changes that you had to make? Doing some cursory diffs, it mostly seems like:

• Copied chip-list.spec to chip-grid.spec and removed the selection behavior and removed keyboard shortcuts
• Copied chip-list.spec to chip-listbox.spec and removed form-field integration and related keyboard shortcuts
• Copied chip.spec to chip-option.spec and ...

[vanessanschmitt]

@jelbourn Commit message updated!

[jelbourn]

LGTM

[ngbot]

I see that you just added the pr: merge ready label, but the following checks are still failing:
     status "ci/circleci: tests_browserstack" is failing

If you want your PR to be merged, it has to pass all the CI checks.

If you can't get the PR to a green state due to flakes or broken master, please try rebasing to master and/or restarting the CI job. If that fails and you believe that the issue is not due to your change, please contact the caretaker and ask for help.

[vanessanschmitt]

related to #16173

[jelbourn]

@vanessanschmitt could you rebase the PR? Another change went in that updated all of the BUILD files in the repo for a new version of bazel's nodejs rules (which was somewhat breaking)

[vanessanschmitt]

@jelbourn Rebased!

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}