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chainsafe-bls/test/unit/helpers/g1point.test.ts

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2019-08-05 15:48:26 +00:00
import {G1point} from "../../../src/helpers/g1point";
import {expect} from "chai";
describe('g1point', function() {
it('should generate different random point', () => {
const g1 = G1point.random();
const g2 = G1point.random();
expect(g1.equal(g2)).to.be.false;
});
it('should be same', () => {
const g1 = G1point.random();
expect(g1.equal(g1)).to.be.true;
});
it('serialize adn deserialize should produce same result', () => {
const g1 = G1point.random();
const g2 = G1point.fromBytesCompressed(g1.toBytesCompressed());
expect(g1.equal(g2)).to.be.true;
});
it('deserialize correct point doesn not throw', () => {
expect(() => {
G1point.fromBytesCompressed(
Buffer.from(
'8123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef',
'hex'
)
)
}).to.not.throw;
});
it('deserialize incorrect point throws', () => {
expect(() => {
G1point.fromBytesCompressed(
Buffer.from(
'8123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcde0',
'hex'
)
)
}).to.throw('X coordinate is not on the curve.');
});
it('deserialize incorrect point throws 2', () => {
expect(() => {
G1point.fromBytesCompressed(
Buffer.from(
'9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaab',
'hex'
)
)
}).to.throw('X coordinate is too large.');
});
it('deserialize incorrect point throws 3', () => {
expect(() => {
G1point.fromBytesCompressed(
Buffer.from(
'9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaac',
'hex'
)
)
}).to.throw('X coordinate is too large.');
});
it('deserialize incorrect point throws to few bytes', () => {
expect(() => {
G1point.fromBytesCompressed(
Buffer.from(
'9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaa',
'hex'
)
)
}).to.throw('Expected g1 compressed input to have 48 bytes');
});
it('deserialize incorrect point throws to many bytes', () => {
expect(() => {
G1point.fromBytesCompressed(
Buffer.from(
'9a0111ea397fe69a4b1ba7b6434bacd764774b84f38512bf6730d2a0f6b0f6241eabfffeb153ffffb9feffffffffaaa900',
'hex'
)
)
}).to.throw('Expected g1 compressed input to have 48 bytes');
});
it('deserialize infinity', () => {
const g1 = G1point.fromBytesCompressed(
Buffer.from(
'c00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
'hex'
)
);
expect(g1.getPoint().is_infinity()).to.be.true
});
it('wrong infinity serialization', () => {
expect(() => {
G1point.fromBytesCompressed(
Buffer.from(
'e00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
'hex'
)
)
}).to.throw('The serialised input has B flag set, but A flag is set, or X is non-zero.');
});
});