Prevent a specific file from being compiled during karma testing sessions

Question

Prevent a specific file from being compiled during karma testing sessions

For my Angular application using angular-cli with Karma, I am facing an issue where a specific file needs to be excluded from compilation during unit tests.

The file causing the problem is mentioned in the error message, indicating that it cannot be compiled due to a missing module dependency.

https://i.sstatic.net/oEzyw.png

Although this file compiles successfully in other projects where the required module is present, in this particular project, it does not require compilation but still needs to be exportable.

My project directory is structured as follows:

index.ts
    - /src
    - /testing

In my index.ts file, I have a single export statement:

export * from './src/core';

The TypeScript source files within the testing folder are being compiled, even though I am not importing any files from this folder in the files under my src folder or anywhere else.

I want to completely exclude the testing folder from the compiler's scope, but my attempts to ignore it have been unsuccessful.

Within my .angular-cli.json file, I have specified the following:

"tsconfig": "tsconfig.json",
"testTsconfig": "tsconfig.spec.json"

Both of these configuration files are located in my src folder. I tried defining exclude patterns in my tsconfig.spec.json like this:

"exclude": [
        "../testing",
        "testing"
    ]

However, this did not solve the issue.

Concerned that Karma might not be utilizing my tsconfig.spec.json file, I added the following:

karmaTypescriptConfig : {
        tsconfig: '.src/tsconfig.spec.json',
    }

Still, the testing folder continues to be included during test preparation.

I am running the latest versions of TypeScript(3.1.6) and Karma(3.1.1) but am still unable to resolve this issue.

If anyone has any suggestions or insights on what might be causing this problem, I would greatly appreciate it.

Thank you

angular typescript karma-runner

Answer 1

Answer №1

It seems like your path may not be precise enough. Can you provide us with a pseudo tree view of your project? Specifically, we need the path of the file you wish to exclude.

The configuration file might require something similar to the following:

"exclude": [
        "someFolder/**/o3-test-harness.class.ts"
    ]

Answer 2

It seems like your path may not be precise enough. Can you provide us with a pseudo tree view of your project? Specifically, we need the path of the file you wish to exclude.

The configuration file might require something similar to the following:

"exclude": [
        "someFolder/**/o3-test-harness.class.ts"
    ]

Answer 3

Answer №2

One solution is to include the exclude file route in the angular.json file within the test configuration.

For example:

test: {...
 "codeCoverageExclude": ["src/your_route_file/file_name.ts"],
}

I tried this method and it worked for me.

Answer 4

One solution is to include the exclude file route in the angular.json file within the test configuration.

For example:

test: {...
 "codeCoverageExclude": ["src/your_route_file/file_name.ts"],
}

I tried this method and it worked for me.

Answer 5

Answer №3

To ensure that a specific file is not included in the testing process, you must add it to the exclude section of the tsconfig.spec.json file.

    {
  "extends": "../tsconfig.json",
  "compilerOptions": {
    "outDir": "../out-tsc/spec",
    "types": [
      "jasmine",
      "node"
    ]
  },
  "files": [
    "test.ts",
    "polyfills.ts"
  ],
  "include": [
    "**/*.spec.ts",
    "**/*.d.ts"
  ],
  "exclude": [
    "yourdirectory to file/**/file that does not need to compile in testing"
 ]
}

Upon running the unit tests, the file specified in the exclude section will be excluded from the process.

Answer 6

To ensure that a specific file is not included in the testing process, you must add it to the exclude section of the tsconfig.spec.json file.

    {
  "extends": "../tsconfig.json",
  "compilerOptions": {
    "outDir": "../out-tsc/spec",
    "types": [
      "jasmine",
      "node"
    ]
  },
  "files": [
    "test.ts",
    "polyfills.ts"
  ],
  "include": [
    "**/*.spec.ts",
    "**/*.d.ts"
  ],
  "exclude": [
    "yourdirectory to file/**/file that does not need to compile in testing"
 ]
}

Upon running the unit tests, the file specified in the exclude section will be excluded from the process.

Answer 7

Answer №4

Within the document,

tsconfig.spec.json

One can insert the exclude array in the following manner,

"exclude": [
"node_modules",
"dist",
"**/tests/*.test.ts",
"src/tests"

]

thus resulting in the following output

https://i.sstatic.net/acjuJ.png

Answer 8

Within the document,

tsconfig.spec.json

One can insert the exclude array in the following manner,

"exclude": [
"node_modules",
"dist",
"**/tests/*.test.ts",
"src/tests"

]

thus resulting in the following output

https://i.sstatic.net/acjuJ.png

Answer 9

Answer №5

When Karma runs its tests, it specifically targets the dist directory. By excluding the testing directory, you can ensure that the tests do not interfere with the compiled dist directory.

To achieve this, you need to make a small adjustment in the

tsconfig.json

Simply include the following code snippet:

"exclude": [
    "./testing"
]

Implementing this code should address the issue you are facing. Please confirm if this solution resolves your problem.

Answer 10

When Karma runs its tests, it specifically targets the dist directory. By excluding the testing directory, you can ensure that the tests do not interfere with the compiled dist directory.

To achieve this, you need to make a small adjustment in the

tsconfig.json

Simply include the following code snippet:

"exclude": [
    "./testing"
]

Implementing this code should address the issue you are facing. Please confirm if this solution resolves your problem.

Prevent a specific file from being compiled during karma testing sessions

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Similar questions

A Guide to Importing Modules in Angular by Assigning Paths to Variables

Angular's ng-select fails to select the value when generating the dynamic control

Utilizing Angular 16 to Link Component Input with Parent Route Parameter

What is the best way to display the arrows on a sorted table based on the sorting order in Angular?

Unable to utilize Component Selectors with MUI v5 and Emotion Library

Typescript function incorrectly returns Protractor's "element.all" output as Promise<string> instead of Promise<string[]>

Can anyone provide guidance on setting up a TypeScript service worker in Vue 3 using the vite-plugin-pwa extension?

Surprising literal found at the second position

What is the best way to pass a value to a modal and access it within the modal's component in Angular 8?

Implement the Promise return type for a function in Angular

Optimizing my AngularJS bundle is pushing me towards upgrading to Angular 5

What is the best way to run ng test for all components within a sub module of an Angular application?

Guide on dividing a URL string in Angular framework

In ReactJS, the way to submit a form using OnChange is by utilizing the

What is the best way to incorporate dynamic infographics into an ionic app?

Access to uploading files has been restricted due to CORS policy restrictions

The argument provided is of type 'string | null' which cannot be assigned to a parameter expecting only 'string' type. The value of 'null' is not compatible with the type 'string' in Angular 12

Issue with displaying tab icons in Ionic 4

What sets apart the utilization of add versus finalize in rxjs?

You must include the formControlName within a parent formGroup directive