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codeql-action/lib/feature-flags.test.js
Andrew Eisenberg 0c27d0da4a Add default values to feature flags 
This changes adds default values to feature flags. These default values
will be used whenever the full set of feature flags are not available
(for example on GHES or if the flag request fails).

The goal is to enable cli config parsing on GHES without removing the
feature flag on dotcom.
2023-03-07 16:24:55 -08:00

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"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const fs = __importStar(require("fs"));
const path = __importStar(require("path"));
const ava_1 = __importDefault(require("ava"));
const defaults = __importStar(require("./defaults.json"));
const feature_flags_1 = require("./feature-flags");
const logging_1 = require("./logging");
const repository_1 = require("./repository");
const testing_utils_1 = require("./testing-utils");
const util_1 = require("./util");
(0, testing_utils_1.setupTests)(ava_1.default);
ava_1.default.beforeEach(() => {
(0, util_1.initializeEnvironment)("1.2.3");
});
const testRepositoryNwo = (0, repository_1.parseRepositoryNwo)("github/example");
const ALL_FEATURES_DISABLED_VARIANTS = [
{
description: "GHES",
gitHubVersion: { type: util_1.GitHubVariant.GHES, version: "3.0.0" },
},
{ description: "GHAE", gitHubVersion: { type: util_1.GitHubVariant.GHAE } },
];
for (const variant of ALL_FEATURES_DISABLED_VARIANTS) {
(0, ava_1.default)(`All features are disabled if running against ${variant.description}`, async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const loggedMessages = [];
const featureEnablement = setUpFeatureFlagTests(tmpDir, (0, testing_utils_1.getRecordingLogger)(loggedMessages), variant.gitHubVersion);
for (const feature of Object.values(feature_flags_1.Feature)) {
t.deepEqual(await featureEnablement.getValue(feature, includeCodeQlIfRequired(feature)), feature_flags_1.featureConfig[feature].defaultValue);
}
t.assert(loggedMessages.find((v) => v.type === "debug" &&
v.message ===
"Not running against github.com. Disabling all toggleable features.") !== undefined);
});
});
}
(0, ava_1.default)("API response missing and features use default value", async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const loggedMessages = [];
const featureEnablement = setUpFeatureFlagTests(tmpDir, (0, testing_utils_1.getRecordingLogger)(loggedMessages));
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(403, {});
for (const feature of Object.values(feature_flags_1.Feature)) {
t.assert((await featureEnablement.getValue(feature, includeCodeQlIfRequired(feature))) === feature_flags_1.featureConfig[feature].defaultValue);
}
assertAllFeaturesUndefinedInApi(t, loggedMessages);
});
});
(0, ava_1.default)("Features use default value if they're not returned in API response", async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const loggedMessages = [];
const featureEnablement = setUpFeatureFlagTests(tmpDir, (0, testing_utils_1.getRecordingLogger)(loggedMessages));
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, {});
for (const feature of Object.values(feature_flags_1.Feature)) {
t.assert((await featureEnablement.getValue(feature, includeCodeQlIfRequired(feature))) === feature_flags_1.featureConfig[feature].defaultValue);
}
assertAllFeaturesUndefinedInApi(t, loggedMessages);
});
});
(0, ava_1.default)("Feature flags exception is propagated if the API request errors", async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(500, {});
await t.throwsAsync(async () => featureEnablement.getValue(feature_flags_1.Feature.MlPoweredQueriesEnabled, includeCodeQlIfRequired(feature_flags_1.Feature.MlPoweredQueriesEnabled)), {
message: "Encountered an error while trying to determine feature enablement: Error: some error message",
});
});
});
for (const feature of Object.keys(feature_flags_1.featureConfig)) {
(0, ava_1.default)(`Only feature '${feature}' is enabled if enabled in the API response. Other features disabled`, async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
// set all features to false except the one we're testing
const expectedFeatureEnablement = {};
for (const f of Object.keys(feature_flags_1.featureConfig)) {
expectedFeatureEnablement[f] = f === feature;
}
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
// retrieve the values of the actual features
const actualFeatureEnablement = {};
for (const f of Object.keys(feature_flags_1.featureConfig)) {
actualFeatureEnablement[f] = await featureEnablement.getValue(f, includeCodeQlIfRequired(f));
}
// All features should be false except the one we're testing
t.deepEqual(actualFeatureEnablement, expectedFeatureEnablement);
});
});
(0, ava_1.default)(`Only feature '${feature}' is enabled if the associated environment variable is true. Others disabled.`, async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
const expectedFeatureEnablement = initializeFeatures(false);
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
// feature should be disabled initially
t.assert(!(await featureEnablement.getValue(feature, includeCodeQlIfRequired(feature))));
// set env var to true and check that the feature is now enabled
process.env[feature_flags_1.featureConfig[feature].envVar] = "true";
t.assert(await featureEnablement.getValue(feature, includeCodeQlIfRequired(feature)));
});
});
(0, ava_1.default)(`Feature '${feature}' is disabled if the associated environment variable is false, even if enabled in API`, async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
const expectedFeatureEnablement = initializeFeatures(true);
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
// feature should be enabled initially
t.assert(await featureEnablement.getValue(feature, includeCodeQlIfRequired(feature)));
// set env var to false and check that the feature is now disabled
process.env[feature_flags_1.featureConfig[feature].envVar] = "false";
t.assert(!(await featureEnablement.getValue(feature, includeCodeQlIfRequired(feature))));
});
});
if (feature_flags_1.featureConfig[feature].minimumVersion !== undefined) {
(0, ava_1.default)(`Getting feature '${feature} should throw if no codeql is provided`, async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
const expectedFeatureEnablement = initializeFeatures(true);
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
await t.throwsAsync(async () => featureEnablement.getValue(feature), {
message: `Internal error: A minimum version is specified for feature ${feature}, but no instance of CodeQL was provided.`,
});
});
});
}
if (feature_flags_1.featureConfig[feature].minimumVersion !== undefined) {
(0, ava_1.default)(`Feature '${feature}' is disabled if the minimum CLI version is below ${feature_flags_1.featureConfig[feature].minimumVersion}`, async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
const expectedFeatureEnablement = initializeFeatures(true);
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
// feature should be disabled when an old CLI version is set
let codeql = (0, testing_utils_1.mockCodeQLVersion)("2.0.0");
t.assert(!(await featureEnablement.getValue(feature, codeql)));
// even setting the env var to true should not enable the feature if
// the minimum CLI version is not met
process.env[feature_flags_1.featureConfig[feature].envVar] = "true";
t.assert(!(await featureEnablement.getValue(feature, codeql)));
// feature should be enabled when a new CLI version is set
// and env var is not set
process.env[feature_flags_1.featureConfig[feature].envVar] = "";
codeql = (0, testing_utils_1.mockCodeQLVersion)(feature_flags_1.featureConfig[feature].minimumVersion);
t.assert(await featureEnablement.getValue(feature, codeql));
// set env var to false and check that the feature is now disabled
process.env[feature_flags_1.featureConfig[feature].envVar] = "false";
t.assert(!(await featureEnablement.getValue(feature, codeql)));
});
});
}
}
// If we ever run into a situation where we no longer have any features that
// specify a minimum version, then we will have a bunch of code no longer being
// tested. This is unlikely, and this test will fail if that happens.
// If we do end up in that situation, then we should consider adding a synthetic
// feature with a minimum version that is only used for tests.
(0, ava_1.default)("At least one feature has a minimum version specified", (t) => {
t.assert(Object.values(feature_flags_1.featureConfig).some((f) => f.minimumVersion !== undefined), "At least one feature should have a minimum version specified");
// An even less likely scenario is that we no longer have any features.
t.assert(Object.values(feature_flags_1.featureConfig).length > 0, "There should be at least one feature");
});
(0, ava_1.default)("Feature flags are saved to disk", async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
const expectedFeatureEnablement = initializeFeatures(true);
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
const cachedFeatureFlags = path.join(tmpDir, feature_flags_1.FEATURE_FLAGS_FILE_NAME);
t.false(fs.existsSync(cachedFeatureFlags), "Feature flag cached file should not exist before getting feature flags");
t.true(await featureEnablement.getValue(feature_flags_1.Feature.CliConfigFileEnabled, includeCodeQlIfRequired(feature_flags_1.Feature.CliConfigFileEnabled)), "Feature flag should be enabled initially");
t.true(fs.existsSync(cachedFeatureFlags), "Feature flag cached file should exist after getting feature flags");
const actualFeatureEnablement = JSON.parse(fs.readFileSync(cachedFeatureFlags, "utf8"));
t.deepEqual(actualFeatureEnablement, expectedFeatureEnablement);
// now test that we actually use the feature flag cache instead of the server
actualFeatureEnablement[feature_flags_1.Feature.CliConfigFileEnabled] = false;
fs.writeFileSync(cachedFeatureFlags, JSON.stringify(actualFeatureEnablement));
// delete the in memory cache so that we are forced to use the cached file
featureEnablement.gitHubFeatureFlags.cachedApiResponse = undefined;
t.false(await featureEnablement.getValue(feature_flags_1.Feature.CliConfigFileEnabled, includeCodeQlIfRequired(feature_flags_1.Feature.CliConfigFileEnabled)), "Feature flag should be enabled after reading from cached file");
});
});
(0, ava_1.default)("Environment variable can override feature flag cache", async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
const expectedFeatureEnablement = initializeFeatures(true);
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
const cachedFeatureFlags = path.join(tmpDir, feature_flags_1.FEATURE_FLAGS_FILE_NAME);
t.true(await featureEnablement.getValue(feature_flags_1.Feature.CliConfigFileEnabled, includeCodeQlIfRequired(feature_flags_1.Feature.CliConfigFileEnabled)), "Feature flag should be enabled initially");
t.true(fs.existsSync(cachedFeatureFlags), "Feature flag cached file should exist after getting feature flags");
process.env.CODEQL_PASS_CONFIG_TO_CLI = "false";
t.false(await featureEnablement.getValue(feature_flags_1.Feature.CliConfigFileEnabled, includeCodeQlIfRequired(feature_flags_1.Feature.CliConfigFileEnabled)), "Feature flag should be disabled after setting env var");
});
});
for (const variant of [util_1.GitHubVariant.GHAE, util_1.GitHubVariant.GHES]) {
(0, ava_1.default)(`selects CLI from defaults.json on ${util_1.GitHubVariant[variant]}`, async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const features = setUpFeatureFlagTests(tmpDir);
const defaultCliVersion = await features.getDefaultCliVersion(variant);
t.deepEqual(defaultCliVersion, {
cliVersion: defaults.cliVersion,
tagName: defaults.bundleVersion,
variant,
});
});
});
}
(0, ava_1.default)("selects CLI v2.12.1 on Dotcom when feature flags enable v2.12.0 and v2.12.1", async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
const expectedFeatureEnablement = initializeFeatures(true);
expectedFeatureEnablement["default_codeql_version_2_12_0_enabled"] = true;
expectedFeatureEnablement["default_codeql_version_2_12_1_enabled"] = true;
expectedFeatureEnablement["default_codeql_version_2_12_2_enabled"] = false;
expectedFeatureEnablement["default_codeql_version_2_12_3_enabled"] = false;
expectedFeatureEnablement["default_codeql_version_2_12_4_enabled"] = false;
expectedFeatureEnablement["default_codeql_version_2_12_5_enabled"] = false;
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
const defaultCliVersion = await featureEnablement.getDefaultCliVersion(util_1.GitHubVariant.DOTCOM);
t.deepEqual(defaultCliVersion, {
cliVersion: "2.12.1",
toolsFeatureFlagsValid: true,
variant: util_1.GitHubVariant.DOTCOM,
});
});
});
(0, ava_1.default)(`selects CLI from defaults.json on Dotcom when no default version feature flags are enabled`, async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const featureEnablement = setUpFeatureFlagTests(tmpDir);
const expectedFeatureEnablement = initializeFeatures(true);
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
const defaultCliVersion = await featureEnablement.getDefaultCliVersion(util_1.GitHubVariant.DOTCOM);
t.deepEqual(defaultCliVersion, {
cliVersion: defaults.cliVersion,
toolsFeatureFlagsValid: false,
variant: util_1.GitHubVariant.DOTCOM,
});
});
});
(0, ava_1.default)("ignores invalid version numbers in default version feature flags", async (t) => {
await (0, util_1.withTmpDir)(async (tmpDir) => {
const loggedMessages = [];
const featureEnablement = setUpFeatureFlagTests(tmpDir, (0, testing_utils_1.getRecordingLogger)(loggedMessages));
const expectedFeatureEnablement = initializeFeatures(true);
expectedFeatureEnablement["default_codeql_version_2_12_0_enabled"] = true;
expectedFeatureEnablement["default_codeql_version_2_12_1_enabled"] = true;
expectedFeatureEnablement["default_codeql_version_2_12_invalid_enabled"] =
true;
(0, testing_utils_1.mockFeatureFlagApiEndpoint)(200, expectedFeatureEnablement);
const defaultCliVersion = await featureEnablement.getDefaultCliVersion(util_1.GitHubVariant.DOTCOM);
t.deepEqual(defaultCliVersion, {
cliVersion: "2.12.1",
toolsFeatureFlagsValid: true,
variant: util_1.GitHubVariant.DOTCOM,
});
t.assert(loggedMessages.find((v) => v.type === "warning" &&
v.message ===
"Ignoring feature flag default_codeql_version_2_12_invalid_enabled as it does not specify a valid CodeQL version.") !== undefined);
});
});
function assertAllFeaturesUndefinedInApi(t, loggedMessages) {
for (const feature of Object.keys(feature_flags_1.featureConfig)) {
t.assert(loggedMessages.find((v) => v.type === "debug" &&
v.message.includes(feature) &&
v.message.includes("undefined in API response")) !== undefined);
}
}
function initializeFeatures(initialValue) {
return Object.keys(feature_flags_1.featureConfig).reduce((features, key) => {
features[key] = initialValue;
return features;
}, {});
}
function setUpFeatureFlagTests(tmpDir, logger = (0, logging_1.getRunnerLogger)(true), gitHubVersion = { type: util_1.GitHubVariant.DOTCOM }) {
(0, testing_utils_1.setupActionsVars)(tmpDir, tmpDir);
return new feature_flags_1.Features(gitHubVersion, testRepositoryNwo, tmpDir, logger);
}
function includeCodeQlIfRequired(feature) {
return feature_flags_1.featureConfig[feature].minimumVersion !== undefined
? (0, testing_utils_1.mockCodeQLVersion)("9.9.9")
: undefined;
}
//# sourceMappingURL=feature-flags.test.js.map
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