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merged 3 commits into from
Sep 4, 2024
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test(site): make loading snapshots more predictable #14564

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test(site): make loading snapshots more predictable
BrunoQuaresma Sep 4, 2024
fe2950c
Fix fmt and lint
BrunoQuaresma Sep 4, 2024
2fc71f8
Passing label as a prop
BrunoQuaresma Sep 4, 2024
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test(site): make loading snapshots more predictable 
Abstracts the Spinner component to control the display of the CircularProgress component. This allows us to make it static during Chromatic tests, making loading tests easier to visualize.
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@BrunoQuaresma
BrunoQuaresma committed Sep 4, 2024
commit 0407a2f9d8e6cfd149151eeeb23c20d72293493a
4 changes: 2 additions & 2 deletions site/src/components/Loader/Loader.tsx
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import type { Interpolation, Theme } from "@emotion/react";
import CircularProgress from "@mui/material/CircularProgress";
import { Spinner } from "components/Spinner/Spinner";
import type { FC, HTMLAttributes } from "react";

interface LoaderProps extends HTMLAttributes<HTMLDivElement> {
Expand All @@ -18,7 +18,7 @@ export const Loader: FC<LoaderProps> = ({
data-testid="loader"
{...attrs}
>
<CircularProgress size={size} />
<Spinner aria-label="Loading..." size={size} />
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I might be misunderstanding but it seems we have a Loader component wrapping a Spinner component wrapping a CircularProgress component. Is there a reason to have 3 levels nesting here?

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Good point! The purpose of the 'Loader' is to act as a container that centrally positions the loading spinner on the page or within a section, with some padding around it. Meanwhile, the 'Spinner' can be utilized in other components, such as loading buttons. Perhaps 'Loader' is not the most suitable name, but I can't think of anything better at the moment.

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Ahh, makes sense! Loader works for me :)

</div>
);
};
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20 changes: 20 additions & 0 deletions site/src/components/Spinner/Spinner.tsx
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
import { CircularProgress, type CircularProgressProps } from "@mui/material";
import type { FC } from "react";
import isChromatic from "chromatic/isChromatic";

/**
* Spinner component used to indicate loading states. This component abstracts
* the MUI CircularProgress to provide better control over its rendering,
* especially in snapshot tests with Chromatic.
*/
export const Spinner: FC<CircularProgressProps> = (props) => {
/**
* During Chromatic snapshots, we render the spinner as determinate to make it
* static without animations, using a deterministic value (75%).
*/
if (isChromatic()) {
props.variant = "determinate";
props.value = 75;
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nice

}
return <CircularProgress {...props} />;
}
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