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feat: Add support for Jest specific functions #100

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merged 1 commit into from
Nov 29, 2016
Merged

feat: Add support for Jest specific functions #100

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38 changes: 37 additions & 1 deletion src/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ export default ({ types: t }) => {
const modulePath = mapModule(moduleArg.node.value, state.file.opts.filename, state.opts, cwd);
if (modulePath) {
nodePath.replaceWith(t.callExpression(
calleePath.node, [t.stringLiteral(modulePath)]
calleePath.node, [t.stringLiteral(modulePath)],
));
}
}
Expand All @@ -113,6 +113,41 @@ export default ({ types: t }) => {
}
}

function transformJestCalls(nodePath, state, cwd) {
const calleePath = nodePath.get('callee');

const jestMethods = [
'genMockFromModule',
'mock',
'unmock',
];

if (!(
t.isMemberExpression(calleePath.node) &&
t.isIdentifier(calleePath.node.object, { name: 'jest' }) &&
jestMethods.some(methodName => t.isIdentifier(calleePath.node.property, { name: methodName }))
)) {
return;
}

const args = nodePath.get('arguments');
if (!args.length) {
return;
}

const moduleArg = args[0];
if (moduleArg.node.type === 'StringLiteral') {
const modulePath = mapModule(moduleArg.node.value, state.file.opts.filename, state.opts, cwd);
if (modulePath) {
const newArgs = [...args].map(a => a.node);
newArgs[0] = t.stringLiteral(modulePath);
nodePath.replaceWith(t.callExpression(
calleePath.node, newArgs,
));
}
}
}

return {
manipulateOptions(babelOptions) {
const findPluginOptions = babelOptions.plugins.find(plugin => plugin[0] === this)[1];
Expand Down Expand Up @@ -152,6 +187,7 @@ export default ({ types: t }) => {
}

transformRequireCall(nodePath, state, this.moduleResolverCWD);
transformJestCalls(nodePath, state, this.moduleResolverCWD);

// eslint-disable-next-line no-param-reassign
nodePath.node.seen = true;
Expand Down
34 changes: 17 additions & 17 deletions test/index.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -44,39 +44,39 @@ describe('module-resolver', () => {
testRequireImport(
'c1',
'./test/examples/components/c1',
transformerOpts
transformerOpts,
);
});

describe('should resolve the sub file path', () => {
testRequireImport(
'sub/sub1',
'./test/examples/components/sub/sub1',
transformerOpts
transformerOpts,
);
});

describe('should resolve the file path while keeping the extension', () => {
testRequireImport(
'sub/sub1.css',
'./test/examples/components/sub/sub1.css',
transformerOpts
transformerOpts,
);
});

describe('should resolve the file path with a filename containing a dot', () => {
testRequireImport(
'sub/custom.modernizr3',
'./test/examples/components/sub/custom.modernizr3',
transformerOpts
transformerOpts,
);
});

describe('should resolve the file path according to a glob', () => {
testRequireImport(
'c1',
'./test/examples/components/c1',
transformerOptsGlob
transformerOptsGlob,
);
});

Expand All @@ -89,15 +89,15 @@ describe('module-resolver', () => {
{
...transformerOpts,
filename: './test/examples/foo/bar/x.js',
}
},
);
});

describe('should not resolve a path outisde of the root directory', () => {
testRequireImport(
'example-file',
'example-file',
transformerOpts
transformerOpts,
);
});
});
Expand All @@ -121,15 +121,15 @@ describe('module-resolver', () => {
testRequireImport(
'utils',
'./src/mylib/subfolder/utils',
transformerOpts
transformerOpts,
);
});

describe('should alias the sub file path', () => {
testRequireImport(
'utils/my-util-file',
'./src/mylib/subfolder/utils/my-util-file',
transformerOpts
transformerOpts,
);
});
});
Expand All @@ -139,15 +139,15 @@ describe('module-resolver', () => {
testRequireImport(
'awesome/components',
'./src/components',
transformerOpts
transformerOpts,
);
});

describe('should alias the sub file path', () => {
testRequireImport(
'awesome/components/my-comp',
'./src/components/my-comp',
transformerOpts
transformerOpts,
);
});
});
Expand All @@ -156,15 +156,15 @@ describe('module-resolver', () => {
testRequireImport(
'utils/custom.modernizr3',
'./src/mylib/subfolder/utils/custom.modernizr3',
transformerOpts
transformerOpts,
);
});

describe('should alias the path with its extension', () => {
testRequireImport(
'awesome/components/my-comp.css',
'./src/components/my-comp.css',
transformerOpts
transformerOpts,
);
});

Expand All @@ -173,15 +173,15 @@ describe('module-resolver', () => {
testRequireImport(
'other-lib',
'other-lib',
transformerOpts
transformerOpts,
);
});

describe('when requiring a specific un-mapped file', () => {
testRequireImport(
'./l/otherLib',
'./l/otherLib',
transformerOpts
transformerOpts,
);
});
});
Expand All @@ -190,15 +190,15 @@ describe('module-resolver', () => {
testRequireImport(
'abstract/thing',
'concrete/thing',
transformerOpts
transformerOpts,
);
});

describe('should support aliasing a node modules', () => {
testRequireImport(
'underscore/map',
'lodash/map',
transformerOpts
transformerOpts,
);
});
});
Expand Down
89 changes: 89 additions & 0 deletions test/jest.test.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,89 @@
/* eslint-env jest */
import { transform } from 'babel-core'; // eslint-disable-line import/no-extraneous-dependencies
import plugin from '../src';

describe('jest functions', () => {
const transformerOpts = {
babelrc: false,
plugins: [
[plugin, {
root: [
'./test/examples/components',
'./test/examples/foo',
],
alias: {
utils: './src/mylib/subfolder/utils',
},
}],
],
};

describe('jest.mock', () => {
it('should resolve the path based on the root config', () => {
const code = 'jest.mock("c1", () => {});';
const result = transform(code, transformerOpts);

expect(result.code).toBe('jest.mock("./test/examples/components/c1", () => {});');
});

it('should alias the path', () => {
const code = 'jest.mock("utils", () => {});';
const result = transform(code, transformerOpts);

expect(result.code).toBe('jest.mock("./src/mylib/subfolder/utils", () => {});');
});

it('should not change the path', () => {
const code = 'jest.mock("./utils", () => {});';
const result = transform(code, transformerOpts);

expect(result.code).toBe('jest.mock("./utils", () => {});');
});
});

describe('jest.unmock', () => {
it('should resolve the path based on the root config', () => {
const code = 'jest.unmock("c1");';
const result = transform(code, transformerOpts);

expect(result.code).toBe('jest.unmock("./test/examples/components/c1");');
});

it('should alias the path', () => {
const code = 'jest.unmock("utils");';
const result = transform(code, transformerOpts);

expect(result.code).toBe('jest.unmock("./src/mylib/subfolder/utils");');
});

it('should not change the path', () => {
const code = 'jest.unmock("./utils");';
const result = transform(code, transformerOpts);

expect(result.code).toBe('jest.unmock("./utils");');
});
});

describe('jest.genMockFromModule', () => {
it('should resolve the path based on the root config', () => {
const code = 'jest.genMockFromModule("c1");';
const result = transform(code, transformerOpts);

expect(result.code).toBe('jest.genMockFromModule("./test/examples/components/c1");');
});

it('should alias the path', () => {
const code = 'jest.genMockFromModule("utils");';
const result = transform(code, transformerOpts);

expect(result.code).toBe('jest.genMockFromModule("./src/mylib/subfolder/utils");');
});

it('should not change the path', () => {
const code = 'jest.genMockFromModule("./utils");';
const result = transform(code, transformerOpts);

expect(result.code).toBe('jest.genMockFromModule("./utils");');
});
});
});