All files / lib/internal/test_runner harness.js

98.87% Statements 175/177
97.29% Branches 36/37
100% Functions 11/11
98.87% Lines 175/177

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 17832x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 58x 58x 16x 16x 16x 16x     16x 16x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 4x 4x 4x 58x 58x 32x 263x 263x 234x 234x 29x 29x 7893x 336x 336x 336x 7557x 7557x 7557x 7893x 3269x 3269x 29x 29x 3200x 3200x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 265x 265x 265x 265x 265x 29x 265x 10x 236x 10x 226x 52x 216x 164x 164x 265x 29x 29x 29x 29x 12x 12x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 17x 17x 29x 29x 29x 1x 1x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 29x 263x 32x 204x 204x 204x 204x 32x 64x 64x 86x 86x 86x 59x 59x 86x 64x 64x 81x 64x 64x 64x 128x 5x 128x 64x 64x 64x 32x 32x 32x 32x 32x 32x  
'use strict';
const {
  ArrayPrototypeForEach,
  FunctionPrototypeBind,
  SafeMap,
} = primordials;
const {
  createHook,
  executionAsyncId,
} = require('async_hooks');
const {
  codes: {
    ERR_TEST_FAILURE,
  },
} = require('internal/errors');
const { Test, ItTest, Suite } = require('internal/test_runner/test');
 
 
const testResources = new SafeMap();
const root = new Test({ __proto__: null, name: '<root>' });
let wasRootSetup = false;
 
function createProcessEventHandler(eventName, rootTest) {
  return (err) => {
    // Check if this error is coming from a test. If it is, fail the test.
    const test = testResources.get(executionAsyncId());
 
    if (!test) {
      throw err;
    }
 
    if (test.finished) {
      // If the test is already finished, report this as a top level
      // diagnostic since this is a malformed test.
      const msg = `Warning: Test "${test.name}" generated asynchronous ` +
        'activity after the test ended. This activity created the error ' +
        `"${err}" and would have caused the test to fail, but instead ` +
        `triggered an ${eventName} event.`;
 
      rootTest.diagnostic(msg);
      return;
    }
 
    test.fail(new ERR_TEST_FAILURE(err, eventName));
    test.postRun();
  };
}
 
function setup(root) {
  if (wasRootSetup) {
    return root;
  }
  const hook = createHook({
    init(asyncId, type, triggerAsyncId, resource) {
      if (resource instanceof Test) {
        testResources.set(asyncId, resource);
        return;
      }
 
      const parent = testResources.get(triggerAsyncId);
 
      if (parent !== undefined) {
        testResources.set(asyncId, parent);
      }
    },
    destroy(asyncId) {
      testResources.delete(asyncId);
    }
  });
 
  hook.enable();
 
  const exceptionHandler =
    createProcessEventHandler('uncaughtException', root);
  const rejectionHandler =
    createProcessEventHandler('unhandledRejection', root);
 
  const exitHandler = () => {
    root.postRun();
 
    let passCount = 0;
    let failCount = 0;
    let skipCount = 0;
    let todoCount = 0;
    let cancelledCount = 0;
 
    for (let i = 0; i < root.subtests.length; i++) {
      const test = root.subtests[i];
 
      // Check SKIP and TODO tests first, as those should not be counted as
      // failures.
      if (test.skipped) {
        skipCount++;
      } else if (test.isTodo) {
        todoCount++;
      } else if (test.cancelled) {
        cancelledCount++;
      } else if (!test.passed) {
        failCount++;
      } else {
        passCount++;
      }
    }
 
    root.reporter.plan(root.indent, root.subtests.length);
 
    for (let i = 0; i < root.diagnostics.length; i++) {
      root.reporter.diagnostic(root.indent, root.diagnostics[i]);
    }
 
    root.reporter.diagnostic(root.indent, `tests ${root.subtests.length}`);
    root.reporter.diagnostic(root.indent, `pass ${passCount}`);
    root.reporter.diagnostic(root.indent, `fail ${failCount}`);
    root.reporter.diagnostic(root.indent, `cancelled ${cancelledCount}`);
    root.reporter.diagnostic(root.indent, `skipped ${skipCount}`);
    root.reporter.diagnostic(root.indent, `todo ${todoCount}`);
    root.reporter.diagnostic(root.indent, `duration_ms ${process.uptime()}`);
 
    root.reporter.push(null);
    hook.disable();
    process.removeListener('unhandledRejection', rejectionHandler);
    process.removeListener('uncaughtException', exceptionHandler);
 
    if (failCount > 0 || cancelledCount > 0) {
      process.exitCode = 1;
    }
  };
 
  const terminationHandler = () => {
    exitHandler();
    process.exit();
  };
 
  process.on('uncaughtException', exceptionHandler);
  process.on('unhandledRejection', rejectionHandler);
  process.on('beforeExit', exitHandler);
  process.on('SIGINT', terminationHandler);
  process.on('SIGTERM', terminationHandler);
 
  root.reporter.pipe(process.stdout);
  root.reporter.version();
 
  wasRootSetup = true;
  return root;
}
 
function test(name, options, fn) {
  const subtest = setup(root).createSubtest(Test, name, options, fn);
  return subtest.start();
}
 
function runInParentContext(Factory) {
  function run(name, options, fn, overrides) {
    const parent = testResources.get(executionAsyncId()) || setup(root);
    const subtest = parent.createSubtest(Factory, name, options, fn, overrides);
    if (parent === root) {
      subtest.start();
    }
  }
 
  const cb = (name, options, fn) => {
    run(name, options, fn);
  };
 
  ArrayPrototypeForEach(['skip', 'todo'], (keyword) => {
    cb[keyword] = (name, options, fn) => {
      run(name, options, fn, { [keyword]: true });
    };
  });
  return cb;
}
 
module.exports = {
  test: FunctionPrototypeBind(test, root),
  describe: runInParentContext(Suite),
  it: runInParentContext(ItTest),
};