@tensorflow/tfjs-core
Version:
Hardware-accelerated JavaScript library for machine intelligence
266 lines • 31.6 kB
JavaScript
/**
* @license
* Copyright 2017 Google LLC. All Rights Reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* =============================================================================
*/
// We use the pattern below (as opposed to require('jasmine') to create the
// jasmine module in order to avoid loading node specific modules which may
// be ignored in browser environments but cannot be ignored in react-native
// due to the pre-bundling of dependencies that it must do.
// tslint:disable-next-line:no-require-imports
const jasmineRequire = require('jasmine-core/lib/jasmine-core/jasmine.js');
const jasmineCore = jasmineRequire.core(jasmineRequire);
import { KernelBackend } from './backends/backend';
import { ENGINE } from './engine';
import { env } from './environment';
import { purgeLocalStorageArtifacts } from './io/local_storage';
import { isPromise } from './util_base';
Error.stackTraceLimit = Infinity;
jasmineCore.DEFAULT_TIMEOUT_INTERVAL = 20000;
export const NODE_ENVS = {
predicate: () => env().platformName === 'node'
};
export const CHROME_ENVS = {
flags: { 'IS_CHROME': true }
};
export const BROWSER_ENVS = {
predicate: () => env().platformName === 'browser'
};
export const SYNC_BACKEND_ENVS = {
predicate: (testEnv) => testEnv.isDataSync === true
};
export const HAS_WORKER = {
predicate: () => typeof (Worker) !== 'undefined' &&
typeof (Blob) !== 'undefined' && typeof (URL) !== 'undefined'
};
export const HAS_NODE_WORKER = {
predicate: () => {
let hasWorker = true;
try {
require.resolve('worker_threads');
}
catch (_a) {
hasWorker = false;
}
return typeof (process) !== 'undefined' && hasWorker;
}
};
export const ALL_ENVS = {};
// Tests whether the current environment satisfies the set of constraints.
export function envSatisfiesConstraints(env, testEnv, constraints) {
if (constraints == null) {
return true;
}
if (constraints.flags != null) {
for (const flagName in constraints.flags) {
const flagValue = constraints.flags[flagName];
if (env.get(flagName) !== flagValue) {
return false;
}
}
}
if (constraints.predicate != null && !constraints.predicate(testEnv)) {
return false;
}
return true;
}
/**
* Add test filtering logic to Jasmine's specFilter hook.
*
* @param testFilters Used for include a test suite, with the ability
* to selectively exclude some of the tests.
* Either `include` or `startsWith` must exist for a `TestFilter`.
* Tests that have the substrings specified by the include or startsWith
* will be included in the test run, unless one of the substrings specified
* by `excludes` appears in the name.
* @param customInclude Function to programmatically include a test.
* If this function returns true, a test will immediately run. Otherwise,
* `testFilters` is used for fine-grained filtering.
*
* If a test is not handled by `testFilters` or `customInclude`, the test will
* be excluded in the test run.
*/
export function setupTestFilters(testFilters, customInclude) {
const env = jasmine.getEnv();
// Account for --grep flag passed to karma by saving the existing specFilter.
const config = env.configuration();
const grepFilter = config.specFilter;
/**
* Filter method that returns boolean, if a given test should run or be
* ignored based on its name. The exclude list has priority over the
* include list. Thus, if a test matches both the exclude and the include
* list, it will be excluded.
*/
// tslint:disable-next-line: no-any
const specFilter = (spec) => {
// Filter out tests if the --grep flag is passed.
if (!grepFilter(spec)) {
return false;
}
const name = spec.getFullName();
if (customInclude(name)) {
return true;
}
// Include tests of a test suite unless tests are in excludes list.
for (let i = 0; i < testFilters.length; ++i) {
const testFilter = testFilters[i];
if ((testFilter.include != null &&
name.indexOf(testFilter.include) > -1) ||
(testFilter.startsWith != null &&
name.startsWith(testFilter.startsWith))) {
if (testFilter.excludes != null) {
for (let j = 0; j < testFilter.excludes.length; j++) {
if (name.indexOf(testFilter.excludes[j]) > -1) {
return false;
}
}
}
return true;
}
}
// Otherwise ignore the test.
return false;
};
env.configure(Object.assign(Object.assign({}, config), { specFilter }));
}
export function parseTestEnvFromKarmaFlags(args, registeredTestEnvs) {
let flags;
let testEnvName;
args.forEach((arg, i) => {
if (arg === '--flags') {
flags = JSON.parse(args[i + 1]);
}
else if (arg === '--testEnv') {
testEnvName = args[i + 1];
}
});
const testEnvNames = registeredTestEnvs.map(env => env.name).join(', ');
if (flags != null && testEnvName == null) {
throw new Error('--testEnv flag is required when --flags is present. ' +
`Available values are [${testEnvNames}].`);
}
if (testEnvName == null) {
return null;
}
let testEnv;
registeredTestEnvs.forEach(env => {
if (env.name === testEnvName) {
testEnv = env;
}
});
if (testEnv == null) {
throw new Error(`Test environment with name ${testEnvName} not ` +
`found. Available test environment names are ` +
`${testEnvNames}`);
}
if (flags != null) {
testEnv.flags = flags;
}
return testEnv;
}
export function describeWithFlags(name, constraints, tests) {
if (TEST_ENVS.length === 0) {
throw new Error(`Found no test environments. This is likely due to test environment ` +
`registries never being imported or test environment registries ` +
`being registered too late.`);
}
TEST_ENVS.forEach(testEnv => {
env().setFlags(testEnv.flags);
env().set('IS_TEST', true);
if (envSatisfiesConstraints(env(), testEnv, constraints)) {
const testName = name + ' ' + testEnv.name + ' ' + JSON.stringify(testEnv.flags || {});
executeTests(testName, tests, testEnv);
}
});
}
export const TEST_ENVS = [];
// Whether a call to setTestEnvs has been called so we turn off
// registration. This allows command line overriding or programmatic
// overriding of the default registrations.
let testEnvSet = false;
export function setTestEnvs(testEnvs) {
testEnvSet = true;
TEST_ENVS.length = 0;
TEST_ENVS.push(...testEnvs);
}
export function registerTestEnv(testEnv) {
// When using an explicit call to setTestEnvs, turn off registration of
// test environments because the explicit call will set the test
// environments.
if (testEnvSet) {
return;
}
TEST_ENVS.push(testEnv);
}
function executeTests(testName, tests, testEnv) {
describe(testName, () => {
beforeAll(async () => {
ENGINE.reset();
if (testEnv.flags != null) {
env().setFlags(testEnv.flags);
}
env().set('IS_TEST', true);
// Await setting the new backend since it can have async init.
await ENGINE.setBackend(testEnv.backendName);
});
beforeEach(() => {
ENGINE.startScope();
});
afterEach(() => {
ENGINE.endScope();
ENGINE.disposeVariables();
});
afterAll(() => {
ENGINE.reset();
});
tests(testEnv);
});
}
export class TestKernelBackend extends KernelBackend {
dispose() { }
}
let lock = Promise.resolve();
/**
* Wraps a Jasmine spec's test function so it is run exclusively to others that
* use runWithLock.
*
* @param spec The function that runs the spec. Must return a promise or call
* `done()`.
*
*/
export function runWithLock(spec) {
return () => {
lock = lock.then(async () => {
let done;
const donePromise = new Promise((resolve, reject) => {
done = (() => {
resolve();
});
done.fail = (message) => {
reject(message);
};
});
purgeLocalStorageArtifacts();
const result = spec(done);
if (isPromise(result)) {
await result;
}
else {
await donePromise;
}
});
return lock;
};
}
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* @license\n * Copyright 2017 Google LLC. All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\n// We use the pattern below (as opposed to require('jasmine') to create the\n// jasmine module in order to avoid loading node specific modules which may\n// be ignored in browser environments but cannot be ignored in react-native\n// due to the pre-bundling of dependencies that it must do.\n// tslint:disable-next-line:no-require-imports\nconst jasmineRequire = require('jasmine-core/lib/jasmine-core/jasmine.js');\nconst jasmineCore = jasmineRequire.core(jasmineRequire);\nimport {KernelBackend} from './backends/backend';\nimport {ENGINE} from './engine';\nimport {env, Environment, Flags} from './environment';\nimport {purgeLocalStorageArtifacts} from './io/local_storage';\nimport {isPromise} from './util_base';\n\nError.stackTraceLimit = Infinity;\njasmineCore.DEFAULT_TIMEOUT_INTERVAL = 20000;\n\nexport type Constraints = {\n  flags?: Flags,\n  predicate?: (testEnv: TestEnv) => boolean,\n};\n\nexport const NODE_ENVS: Constraints = {\n  predicate: () => env().platformName === 'node'\n};\nexport const CHROME_ENVS: Constraints = {\n  flags: {'IS_CHROME': true}\n};\nexport const BROWSER_ENVS: Constraints = {\n  predicate: () => env().platformName === 'browser'\n};\n\nexport const SYNC_BACKEND_ENVS: Constraints = {\n  predicate: (testEnv: TestEnv) => testEnv.isDataSync === true\n};\n\nexport const HAS_WORKER = {\n  predicate: () => typeof (Worker) !== 'undefined' &&\n      typeof (Blob) !== 'undefined' && typeof (URL) !== 'undefined'\n};\n\nexport const HAS_NODE_WORKER = {\n  predicate: () => {\n    let hasWorker = true;\n    try {\n      require.resolve('worker_threads');\n    } catch {\n      hasWorker = false;\n    }\n    return typeof (process) !== 'undefined' && hasWorker;\n  }\n};\n\nexport const ALL_ENVS: Constraints = {};\n\n// Tests whether the current environment satisfies the set of constraints.\nexport function envSatisfiesConstraints(\n    env: Environment, testEnv: TestEnv, constraints: Constraints): boolean {\n  if (constraints == null) {\n    return true;\n  }\n\n  if (constraints.flags != null) {\n    for (const flagName in constraints.flags) {\n      const flagValue = constraints.flags[flagName];\n      if (env.get(flagName) !== flagValue) {\n        return false;\n      }\n    }\n  }\n  if (constraints.predicate != null && !constraints.predicate(testEnv)) {\n    return false;\n  }\n  return true;\n}\n\nexport interface TestFilter {\n  include?: string;\n  startsWith?: string;\n  excludes?: string[];\n}\n\n/**\n * Add test filtering logic to Jasmine's specFilter hook.\n *\n * @param testFilters Used for include a test suite, with the ability\n *     to selectively exclude some of the tests.\n *     Either `include` or `startsWith` must exist for a `TestFilter`.\n *     Tests that have the substrings specified by the include or startsWith\n *     will be included in the test run, unless one of the substrings specified\n *     by `excludes` appears in the name.\n * @param customInclude Function to programmatically include a test.\n *     If this function returns true, a test will immediately run. Otherwise,\n *     `testFilters` is used for fine-grained filtering.\n *\n * If a test is not handled by `testFilters` or `customInclude`, the test will\n * be excluded in the test run.\n */\nexport function setupTestFilters(\n    testFilters: TestFilter[], customInclude: (name: string) => boolean) {\n  const env = jasmine.getEnv();\n\n  // Account for --grep flag passed to karma by saving the existing specFilter.\n  const config = env.configuration();\n  const grepFilter = config.specFilter;\n\n  /**\n   * Filter method that returns boolean, if a given test should run or be\n   * ignored based on its name. The exclude list has priority over the\n   * include list. Thus, if a test matches both the exclude and the include\n   * list, it will be excluded.\n   */\n  // tslint:disable-next-line: no-any\n  const specFilter = (spec: any) => {\n    // Filter out tests if the --grep flag is passed.\n    if (!grepFilter(spec)) {\n      return false;\n    }\n\n    const name = spec.getFullName();\n\n    if (customInclude(name)) {\n      return true;\n    }\n\n    // Include tests of a test suite unless tests are in excludes list.\n    for (let i = 0; i < testFilters.length; ++i) {\n      const testFilter = testFilters[i];\n      if ((testFilter.include != null &&\n           name.indexOf(testFilter.include) > -1) ||\n          (testFilter.startsWith != null &&\n           name.startsWith(testFilter.startsWith))) {\n        if (testFilter.excludes != null) {\n          for (let j = 0; j < testFilter.excludes.length; j++) {\n            if (name.indexOf(testFilter.excludes[j]) > -1) {\n              return false;\n            }\n          }\n        }\n        return true;\n      }\n    }\n\n    // Otherwise ignore the test.\n    return false;\n  };\n\n  env.configure({...config, specFilter});\n}\n\nexport function parseTestEnvFromKarmaFlags(\n    args: string[], registeredTestEnvs: TestEnv[]): TestEnv {\n  let flags: Flags;\n  let testEnvName: string;\n\n  args.forEach((arg, i) => {\n    if (arg === '--flags') {\n      flags = JSON.parse(args[i + 1]);\n    } else if (arg === '--testEnv') {\n      testEnvName = args[i + 1];\n    }\n  });\n\n  const testEnvNames = registeredTestEnvs.map(env => env.name).join(', ');\n  if (flags != null && testEnvName == null) {\n    throw new Error(\n        '--testEnv flag is required when --flags is present. ' +\n        `Available values are [${testEnvNames}].`);\n  }\n  if (testEnvName == null) {\n    return null;\n  }\n\n  let testEnv: TestEnv;\n  registeredTestEnvs.forEach(env => {\n    if (env.name === testEnvName) {\n      testEnv = env;\n    }\n  });\n  if (testEnv == null) {\n    throw new Error(\n        `Test environment with name ${testEnvName} not ` +\n        `found. Available test environment names are ` +\n        `${testEnvNames}`);\n  }\n  if (flags != null) {\n    testEnv.flags = flags;\n  }\n\n  return testEnv;\n}\n\nexport function describeWithFlags(\n    name: string, constraints: Constraints, tests: (env: TestEnv) => void) {\n  if (TEST_ENVS.length === 0) {\n    throw new Error(\n        `Found no test environments. This is likely due to test environment ` +\n        `registries never being imported or test environment registries ` +\n        `being registered too late.`);\n  }\n\n  TEST_ENVS.forEach(testEnv => {\n    env().setFlags(testEnv.flags);\n    env().set('IS_TEST', true);\n    if (envSatisfiesConstraints(env(), testEnv, constraints)) {\n      const testName =\n          name + ' ' + testEnv.name + ' ' + JSON.stringify(testEnv.flags || {});\n      executeTests(testName, tests, testEnv);\n    }\n  });\n}\n\nexport interface TestEnv {\n  name: string;\n  backendName: string;\n  flags?: Flags;\n  isDataSync?: boolean;\n}\n\nexport const TEST_ENVS: TestEnv[] = [];\n\n// Whether a call to setTestEnvs has been called so we turn off\n// registration. This allows command line overriding or programmatic\n// overriding of the default registrations.\nlet testEnvSet = false;\nexport function setTestEnvs(testEnvs: TestEnv[]) {\n  testEnvSet = true;\n  TEST_ENVS.length = 0;\n  TEST_ENVS.push(...testEnvs);\n}\n\nexport function registerTestEnv(testEnv: TestEnv) {\n  // When using an explicit call to setTestEnvs, turn off registration of\n  // test environments because the explicit call will set the test\n  // environments.\n  if (testEnvSet) {\n    return;\n  }\n  TEST_ENVS.push(testEnv);\n}\n\nfunction executeTests(\n    testName: string, tests: (env: TestEnv) => void, testEnv: TestEnv) {\n  describe(testName, () => {\n    beforeAll(async () => {\n      ENGINE.reset();\n      if (testEnv.flags != null) {\n        env().setFlags(testEnv.flags);\n      }\n      env().set('IS_TEST', true);\n      // Await setting the new backend since it can have async init.\n      await ENGINE.setBackend(testEnv.backendName);\n    });\n\n    beforeEach(() => {\n      ENGINE.startScope();\n    });\n\n    afterEach(() => {\n      ENGINE.endScope();\n      ENGINE.disposeVariables();\n    });\n\n    afterAll(() => {\n      ENGINE.reset();\n    });\n\n    tests(testEnv);\n  });\n}\n\nexport class TestKernelBackend extends KernelBackend {\n  override dispose(): void {}\n}\n\nlet lock = Promise.resolve();\n\n/**\n * Wraps a Jasmine spec's test function so it is run exclusively to others that\n * use runWithLock.\n *\n * @param spec The function that runs the spec. Must return a promise or call\n *     `done()`.\n *\n */\nexport function runWithLock(spec: (done?: DoneFn) => Promise<void>| void) {\n  return () => {\n    lock = lock.then(async () => {\n      let done: DoneFn;\n      const donePromise = new Promise<void>((resolve, reject) => {\n        done = (() => {\n                 resolve();\n               }) as DoneFn;\n        done.fail = (message?) => {\n          reject(message);\n        };\n      });\n\n      purgeLocalStorageArtifacts();\n      const result = spec(done);\n\n      if (isPromise(result)) {\n        await result;\n      } else {\n        await donePromise;\n      }\n    });\n    return lock;\n  };\n}\n"]}