All files / lib/internal/test_runner harness.js

98.78% Statements 162/164
96.87% Branches 31/32
100% Functions 9/9
98.78% Lines 162/164

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 16524x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 42x 42x 16x 16x 16x 16x     16x 16x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 4x 4x 4x 42x 42x 24x 221x 221x 200x 200x 21x 21x 2367x 260x 260x 260x 2107x 2107x 2107x 2367x 1106x 1106x 21x 21x 1737x 1737x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 223x 223x 223x 223x 223x 29x 223x 10x 194x 47x 184x 137x 137x 223x 21x 21x 21x 21x 12x 12x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 12x 12x 21x 21x 21x 21x 21x 21x 21x 221x 24x 168x 168x 168x 168x 24x 48x 48x 64x 64x 64x 53x 53x 64x 48x 48x 59x 48x 48x 48x 96x 5x 96x 48x 48x 48x 24x 24x 24x 24x 24x 24x  
'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);
 
  process.on('uncaughtException', exceptionHandler);
  process.on('unhandledRejection', rejectionHandler);
  process.on('beforeExit', () => {
    root.postRun();
 
    let passCount = 0;
    let failCount = 0;
    let skipCount = 0;
    let todoCount = 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.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, `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) {
      process.exitCode = 1;
    }
  });
 
  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),
};