danger-plugin-istanbul-coverage/dist/parser/parse-lcov.test.js

Danger.js plugin for monitoring istanbul code coverage on changed files.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const filesystem_service_1 = require("../filesystem.service");
const parse_lcov_1 = require("./parse-lcov");
jest.mock("../filesystem.service");
function setupCoverageFile(coverage) {
    ;
    filesystem_service_1.default.mockImplementation(() => {
        return {
            exists: p => coverage !== undefined,
            read: p => (coverage !== undefined ? coverage : undefined),
        };
    });
}
describe("parseLcov", () => {
    it("can parse a correctly formatted lcov file", () => {
        setupCoverageFile(`TN:
SF: some/file.ts
FN: 1, func1
FN: 5, func2
FN: 10, func3
FN: 15, func4
FNDA: 1, func1
FNDA: 3, func2
FNDA: 0, func3
FNDA: 0, func4
FNF: 4
FNH: 2
BRF: 8
BRH: 4
LH: 15
LF: 20
end_of_record`);
        const output = parse_lcov_1.parseLcov("randomPath");
        expect(output).toEqual({
            "some/file.ts": {
                lines: { total: 20, covered: 15, skipped: 5, pct: 75 },
                functions: { total: 4, covered: 2, skipped: 2, pct: 50 },
                statements: { total: 20, covered: 15, skipped: 5, pct: 75 },
                branches: { total: 8, covered: 4, skipped: 4, pct: 50 },
            },
        });
    });
    it("outputs an empty collection if there is no end_of_record", () => {
        setupCoverageFile(`TN:
SF: some/file.ts
FN: 1, func1
FNDA: 1, func1
FNF: 1
FNH: 1
BRF: 8
BRH: 4
LH: 15
LF: 20`);
        const output = parse_lcov_1.parseLcov("randomPath");
        expect(output).toEqual({});
    });
    it("fails to pass if FNF (number of functions) is missing", () => {
        setupCoverageFile(`TN:
SF: some/file.ts
FN: 1, func1
FNDA: 1, func1
FNH: 1
BRF: 8
BRH: 4
LH: 15
LF: 20
end_of_record`);
        expect(() => parse_lcov_1.parseLcov("randomPath")).toThrow();
    });
    it("can parse a correctly formatted lcov file with two records", () => {
        setupCoverageFile(`TN:
SF: some/file1.ts
FN: 1, func1
FNDA: 1, func1
FNH: 1
FNF: 1
BRF: 8
BRH: 4
LH: 15
LF: 20
end_of_record
SF: some/file2.ts
FN: 1, func1
FNDA: 1, func1
FN: 1, func2
FNDA: 1, func2
FNH: 1
FNF: 2
BRF: 8
BRH: 4
LH: 15
LF: 20
end_of_record`);
        const output = parse_lcov_1.parseLcov("randomPath");
        expect(output).toEqual({
            "some/file1.ts": {
                lines: { total: 20, covered: 15, skipped: 5, pct: 75 },
                functions: { total: 1, covered: 1, skipped: 0, pct: 100 },
                statements: { total: 20, covered: 15, skipped: 5, pct: 75 },
                branches: { total: 8, covered: 4, skipped: 4, pct: 50 },
            },
            "some/file2.ts": {
                lines: { total: 20, covered: 15, skipped: 5, pct: 75 },
                functions: { total: 2, covered: 1, skipped: 1, pct: 50 },
                statements: { total: 20, covered: 15, skipped: 5, pct: 75 },
                branches: { total: 8, covered: 4, skipped: 4, pct: 50 },
            },
        });
    });
    it("throws an error when the file doesn't exist", () => {
        setupCoverageFile(undefined);
        expect(() => parse_lcov_1.parseLcov("randomPath")).toThrow();
    });
});