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https://github.com/google/intermock

Mocking library to create mock objects with fake data for TypeScript interfaces
https://github.com/google/intermock

Last synced: 1 day ago
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Mocking library to create mock objects with fake data for TypeScript interfaces

Host: GitHub
URL: https://github.com/google/intermock
Owner: google
License: apache-2.0
Created: 2019-01-15T21:49:16.000Z (almost 6 years ago)
Default Branch: master
Last Pushed: 2024-06-10T23:18:41.000Z (6 months ago)
Last Synced: 2024-12-04T12:09:42.180Z (8 days ago)
Language: TypeScript
Homepage: https://google.github.io/intermock/
Size: 3.93 MB
Stars: 1,138
Watchers: 11
Forks: 71
Open Issues: 48
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE

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README

# intermock [![Build Status](https://api.travis-ci.org/google/intermock.svg?branch=master)](https://travis-ci.org/google/intermock)
Mocking library to create mock objects and JSON for TypeScript interfaces via Faker.

**This is not an officially supported Google product.**

## Installation
```
npm install intermock
```

## CLI
Intermock exposes a CLI, **which is the recommended way to use the tool**. The following subsections show an example file, command, and output to demonstrate using the CLI.

### Example file
```typescript
interface Admin extends User {
adminRecord: AdminRecord;
}

interface Student extends User {
schoolRecord: SchoolRecord;
}

interface User {
firstName: string;
lastName: string;
username: string;
emailAddress: string;
}

interface AdminRecord {
studentsPassedEachYear: number[];
}

interface SchoolRecord {
startDate: string;
endDate: string;
isActive: boolean;
grades: number[];
}
```

### Example command
```bash
node ./node_modules/intermock/build/src/cli/index.js --files ./example-file.ts --interfaces "Admin"
```

### Example output
```json
{
"Admin": {
"firstName": "Willa",
"lastName": "Walker",
"username": "Shyann_Mante",
"emailAddress": "[email protected]",
"adminRecord": {
"studentsPassedEachYear": [
80342,
23404,
12854,
74937,
38185,
73316
]
}
},
```

## API Usage
Intermock’s API exports only one function, as seen below:

### Function
```typescript
// Returns an object or string based on `output` property specified in `Options`
mock(options: Options): object|string
```

### Options
```typescript
export interface Options {
// Array of file tuples. (filename, data)
files?: Array<[string, string]>;

// TypeScript is currently the only supported language
language?: SupportedLanguage;

// Specific interfaces to write to output
interfaces?: string[];

// Used for testing mode,
isFixedMode?: boolean;

// One of object|json|string. Strings have their object's functions
// stringified.
output?: OutputType;

// Should optional properties always be enabled
isOptionalAlwaysEnabled?: boolean;
}
```

## Type Support
The following TypeScript features are supported:
- Interfaces
- Interfaces with properties of primitive types
- Interfaces with property references to other complex types
- Interfaces with extensions
- Unions
- Type aliases
- Arrays
- Namespaces
- Tuples
- Mapped types
- Generics
- Functions (stringified output!)
- Optional properties
- Type imports
- Specific [Faker](https://github.com/marak/Faker.js/#api-methods) data types (via JSDoc comment)
```ts
interface Host {
/** @mockType {internet.ipv6} */
addr: string;
}
```

## Building
`npm run build`

## Development
If you want to run the build script and tests after you save a file while developing,
run the following command:
`npm run test-watch`

## Docs
### Developing Docs
To develop documentation run the following commands:
```
npm run build
npm run docs-serve
```

Edit the files in `docs/` and Webpack's Dev Server should auto-reload when there are changes

### Statically Building Docs
To build the docs statically run the following command:
```
npm run build
npm run docs-build
```

## Contributing
1. Read **all** of `CONTRIBUTING.md` in this repo
1. Sign the CLA
1. In a terminal, run `npm run ci`
1. Fix any linting, formatting, and/or compiling errors. (Note: Format errors can be fixed by `npm run format`. DO NOT fix linting errors by disabling the linter on a line and/or block)
1. Create a Pull Request
1. Address all comments, if any
1. If everything looks good after comments are addressed, your PR will be merged!

## License
See `LICENSE` in this repo