How to do the test

1.) git checkout feature/#407_add_data_node_test
2.) go to frontend directory
3.) run yarn install
4.) run yarn run test

It should run the tests. All of it should be passing.

Seems to work correctly
yarn install
yarn run test
Output:

(node:74770) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)
PASS src/store/slice/AlgorithmList/AlgorithmList.test.ts
PASS src/store/test/visualize/Visualize.test.ts
(node:74769) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)
(node:74772) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)
PASS src/store/test/RunSelectors.test.ts (5.536 s)
PASS src/store/test/record/RecordReproduce.test.ts (5.537 s)
PASS src/store/slice/Experiments/Experiments.test.ts
PASS src/store/test/workflow/AlgorithmNode/AlgorithmNode.test.ts
One of your dependencies, babel-preset-react-app, is importing the
"@babel/plugin-proposal-private-property-in-object" package without
declaring it in its dependencies. This is currently working because
"@babel/plugin-proposal-private-property-in-object" is already in your
node_modules folder for unrelated reasons, but it may break at any time.

babel-preset-react-app is part of the create-react-app project, which
is not maintianed anymore. It is thus unlikely that this bug will
ever be fixed. Add "@babel/plugin-proposal-private-property-in-object" to
your devDependencies to work around this error. This will make this message
go away.

PASS src/store/test/workflow/InputNode/InputNode.test.ts
One of your dependencies, babel-preset-react-app, is importing the
"@babel/plugin-proposal-private-property-in-object" package without
declaring it in its dependencies. This is currently working because
"@babel/plugin-proposal-private-property-in-object" is already in your
node_modules folder for unrelated reasons, but it may break at any time.

babel-preset-react-app is part of the create-react-app project, which
is not maintianed anymore. It is thus unlikely that this bug will
ever be fixed. Add "@babel/plugin-proposal-private-property-in-object" to
your devDependencies to work around this error. This will make this message
go away.

PASS src/store/slice/FilesTree/FilesTree.test.ts
One of your dependencies, babel-preset-react-app, is importing the
"@babel/plugin-proposal-private-property-in-object" package without
declaring it in its dependencies. This is currently working because
"@babel/plugin-proposal-private-property-in-object" is already in your
node_modules folder for unrelated reasons, but it may break at any time.

babel-preset-react-app is part of the create-react-app project, which
is not maintianed anymore. It is thus unlikely that this bug will
ever be fixed. Add "@babel/plugin-proposal-private-property-in-object" to
your devDependencies to work around this error. This will make this message
go away.

(node:74771) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)
One of your dependencies, babel-preset-react-app, is importing the
"@babel/plugin-proposal-private-property-in-object" package without
declaring it in its dependencies. This is currently working because
"@babel/plugin-proposal-private-property-in-object" is already in your
node_modules folder for unrelated reasons, but it may break at any time.

babel-preset-react-app is part of the create-react-app project, which
is not maintianed anymore. It is thus unlikely that this bug will
ever be fixed. Add "@babel/plugin-proposal-private-property-in-object" to
your devDependencies to work around this error. This will make this message
go away.

PASS src/components/Workspace/FlowChart/TreeView.test.tsx (9.943 s)

Test Suites: 9 passed, 9 total
Tests: 27 passed, 27 total
Snapshots: 0 total
Time: 11.883 s
Ran all test suites.

@milesAraya Thank you for checking. I will try to update yarn.

@milesAraya
お疲れ様です。
@babel/plugin-proposal-private-property-in-object　に関しては対応しましたが、punycodeについてはなかなか解決はできないため、一旦放置しています。
現状は優先するものではないかと思います。