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  1. 05 Nov, 2019 1 commit
  3. 04 Nov, 2019 4 commits
    • Robert Knight's avatar
      Merge pull request #1470 from hypothesis/replace-shallow-with-mount-and-mock · 4916c78c
      Robert Knight authored 
      Change approach to mocking components in unit tests
      4916c78c
    • Robert Knight's avatar
      Improve several JSDoc comments in `mock-imported-components.js` · d0908279
      Robert Knight authored
      d0908279
    • Robert Knight's avatar
      Change mocking approach for imported components in tests · 147f561c
      Robert Knight authored 
      Shallow rendering with Enzyme's `shallow` function conflates two changes in
rendering behavior:

 1. Only rendering "one level deep" so that a test for a component is
    isolated from the details of any child components

 2. In React (but not Preact) rendering to a data structure instead of
    real DOM nodes. Even though Preact still renders real DOM nodes,
    Enzyme's shallow rendering API removes many of the features of
    `mount` rendering

In practice, we only used shallow rendering for (1) and we have found
that there are use cases where we want (1) but still want to be able to
interact with the real DOM nodes (ie. we don't want (2)). The need to
use different mocking approaches and understand the conflated behaviors
mentioned above has been a source of confusion for developers.

This commit changes the mocking approach to always use a pattern that we
have until now only used selectively. Enzyme's `mount` rendering mode is
always used, but a utility function, `mockImportedComponents`, is used
with our existing import mocking (via babel-plugin-mockable-imports) to
semi-automatically mock all imported components.

Each test has been changed as follows:

 1. Replace `shallow` with `mount`

 2. Call `ComponentUnderTest.$imports.$mock(mockImportedComponents())`
    in the test setup to mock all imported components, but not helper
    components defined in the same file.

 3. Call `ComponentUnderTest.$imports.$restore()` in test cleanup, if
    the test was not already doing that.

 4. Replace uses of (`wrapper.find(SomeChildComponent)`) with
    (`wrapper.find('SomeChildComponent')`. This is necessary because the
    mocked component no longer has the same identity as the original, so
    we look it up by name instead.
      147f561c
    • Robert Knight's avatar
      Add a utility to mock all components imported by a module · 721bf3f8
      Robert Knight authored 
      This will be used as an alternative to shallow rendering to facilitate
unit-testing of Preact components.
      721bf3f8
  5. 29 Oct, 2019 4 commits
    • Robert Knight's avatar
      Upgrade Preact · 8c932118
      Robert Knight authored 
      This fixes an issue with `useLayoutEffect` where it could run before a
component's DOM node became connected to the document, preventing the
effect from measuring the node.
      8c932118
    • Robert Knight's avatar
      Remove unnecessary `$onInit` callback · 9e858939
      Robert Knight authored 
      It turns out that `$onChanges` is invoked both when the component is
initially created as well as subsequent updates. Therefore `$onInit` and
`$onChanges` duplicated work and components were rendered twice during
initial creation.
      9e858939
    • Robert Knight's avatar
      Allow function props to be invoked during a digest cycle · 50b0996b
      Robert Knight authored 
      Allow function props passed to Preact components wrapped with
`wrapReactComponent` to be invoked when a digest cycle is already active
for some reason. In that case using `$scope.$apply` triggers an error.

This scenario is rare, as callbacks are usually invoked in response to
events that happen outside of Angular, but changes made by Angular code
can indirectly cause Preact components to invoke callbacks. For example,
in layout effects which run at the end of a `render` call.
      50b0996b
    • Robert Knight's avatar
      Merge pull request #1449 from hypothesis/fix-pdf-position-anchoring-bug · 1c80ed66
      Robert Knight authored 
      Fix PDF anchoring when annotation refers to last text on a page
      1c80ed66
  7. 28 Oct, 2019 17 commits
  9. 25 Oct, 2019 6 commits
  11. 24 Oct, 2019 2 commits
  13. 22 Oct, 2019 6 commits