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diff.test.ts
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diff.test.ts
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const semver = require('../../');
const diff = semver.diff;
// Not implemented as we don't use it.
// diff(v1, v2): Returns difference between two versions by the release type
// (major, premajor, minor, preminor, patch, prepatch, or prerelease), or null
// if the versions are the same.
describe('test diff', () => {
it('diff(v1, v2): same versions', () => {
expect(diff('1', '1')).toBe(null);
expect(diff('1.1', '1.1')).toBe(null);
expect(diff('1.1.2', '1.1.2')).toBe(null);
expect(diff('1.1.1.1', '1.1.1.1')).toBe(null);
expect(diff('1.0.0.alpha.1', '1.0.0.alpha.1')).toBe(null);
expect(diff('1.1.2-1', '1.1.2.pre.1')).toBe(null);
expect(diff('1.1.2.pre.1', '1.1.2-1')).toBe(null);
expect(diff('2', '2.0')).toBe(null);
expect(diff('2.0', '2')).toBe(null);
expect(diff('2', '2.0.0')).toBe(null);
expect(diff('2.0.0', '2')).toBe(null);
expect(diff('2', '2.0.0.0')).toBe(null);
expect(diff('2.0.0.0', '2')).toBe(null);
});
it('diff(v1, v2): major versions', () => {
expect(diff('1', '3')).toBe('major');
expect(diff('1.1', '3.1')).toBe('major');
expect(diff('1.1.2', '3.0.0')).toBe('major');
expect(diff('1.1.2', '2.0.0')).toBe('major');
expect(diff('1.1.1.1', '2.0.0')).toBe('major');
});
it('diff(v1, v2): minor versions', () => {
expect(diff('1.1', '1.2')).toBe('minor');
expect(diff('1.1.2', '1.2.1.1')).toBe('minor');
expect(diff('1.1.2', '1.2.0')).toBe('minor');
expect(diff('1.1.2.1', '1.2.0')).toBe('minor');
expect(diff('1.1.2.1', '1.2.0.1')).toBe('minor');
});
it('diff(v1, v2): patch versions', () => {
expect(diff('1.1.2', '1.1.3')).toBe('patch');
expect(diff('1.1.2', '1.1.2.1')).toBe('patch');
expect(diff('1.1.2.1', '1.1.3')).toBe('patch');
expect(diff('1.1.2.1', '1.1.3.2.1')).toBe('patch');
expect(diff('1.1.2.1', '1.1.2.1.1.1.2')).toBe('patch');
expect(diff('1.1.2.1.1.1.1', '1.1.2.1.1.1.2')).toBe('patch');
});
it('diff(v1, v2): premajor versions', () => {
expect(diff('1.0.0.alpha.1', '2.0.0')).toBe('premajor');
});
it('diff(v1, v2): preminor versions', () => {
expect(diff('1.1.2.alpha.1', '1.2.0')).toBe('preminor');
});
it('diff(v1, v2): prepatch versions', () => {
expect(diff('1.1.2.alpha.1', '1.1.3')).toBe('prepatch');
expect(diff('1.1.2.3.alpha.1', '1.1.2.alpha.2')).toBe('prepatch');
expect(diff('1.1.2.3.alpha.1', '1.1.2.4.alpha.2')).toBe('prepatch');
expect(diff('1.1.2.alpha.1', '1.1.2.1')).toBe('prepatch');
});
it('diff(v1, v2): prerelease versions', () => {
expect(diff('1.1.2.alpha.1', '1.1.2.alpha.2')).toBe('prerelease');
expect(diff('1.1.2.3.alpha.1', '1.1.2.3.alpha.2')).toBe('prerelease');
expect(diff('1.alpha.1', '1')).toBe('prerelease');
})
});