Use ts-jest for running integration tests

Instead of running the integration tests from the `out` directory, this
will run the integration tests from the `src` directory using `ts-jest`.

Unfortunately, we are not able to use TypeScript files for the
`jest-runner-vscode` configuration since `cosmiconfig` (the package that
handles the configuration loading for `jest-runner-vscode`) doesn't
support loading TypeScript files by default.

extensions/ql-vscode/jest.config.js

@@ -8,8 +8,8 @@ module.exports = {
   projects: [
     "<rootDir>/src/view",
     "<rootDir>/test",
-    "<rootDir>/out/vscode-tests/cli-integration",
+    "<rootDir>/src/vscode-tests/cli-integration",
-    "<rootDir>/out/vscode-tests/no-workspace",
+    "<rootDir>/src/vscode-tests/no-workspace",
-    "<rootDir>/out/vscode-tests/minimal-workspace",
+    "<rootDir>/src/vscode-tests/minimal-workspace",
   ],
 };

extensions/ql-vscode/package.json

@@ -1273,9 +1273,9 @@
     "test:unit": "jest --projects test",
     "test:view": "jest --projects src/view",
     "integration": "npm-run-all integration:*",
-    "integration:no-workspace": "jest --projects out/vscode-tests/no-workspace",
+    "integration:no-workspace": "jest --projects src/vscode-tests/no-workspace",
-    "integration:minimal-workspace": "jest --projects out/vscode-tests/minimal-workspace",
+    "integration:minimal-workspace": "jest --projects src/vscode-tests/minimal-workspace",
-    "cli-integration": "jest --projects out/vscode-tests/cli-integration",
+    "cli-integration": "jest --projects src/vscode-tests/cli-integration",
     "update-vscode": "node ./node_modules/vscode/bin/install",
     "format": "prettier --write **/*.{ts,tsx} && eslint . --ext .ts,.tsx --fix",
     "lint": "eslint . --ext .ts,.tsx --max-warnings=0",

extensions/ql-vscode/src/vscode-tests/cli-integration/jest-runner-vscode.config.js

@@ -1,10 +1,12 @@
-import * as path from "path";
+const path = require("path");
 
-import { RunnerOptions } from "jest-runner-vscode";
+const {
+  config: baseConfig,
+  rootDir,
+} = require("../jest-runner-vscode.config.base");
 
-import baseConfig, { rootDir } from "../jest-runner-vscode.config.base";
+/** @type import("jest-runner-vscode").RunnerOptions */
-
+const config = {
-const config: RunnerOptions = {
   ...baseConfig,
   launchArgs: [
     ...(baseConfig.launchArgs ?? []),
@@ -25,6 +27,4 @@ const config: RunnerOptions = {
   },
 };
 
-// We are purposefully not using export default here since that would result in an ESModule, which doesn't seem to be
-// supported properly by jest-runner-vscode (cosmiconfig doesn't really seem to support it).
 module.exports = config;

extensions/ql-vscode/src/vscode-tests/cli-integration/jest.config.ts

@@ -4,8 +4,8 @@ import baseConfig from "../jest.config.base";
 
 const config: Config = {
   ...baseConfig,
-  runner: "<rootDir>/jest-runner-cli-integration.js",
+  runner: "<rootDir>/jest-runner-cli-integration.ts",
-  setupFilesAfterEnv: ["<rootDir>/jest.setup.js"],
+  setupFilesAfterEnv: ["<rootDir>/jest.setup.ts"],
 };
 
 export default config;

extensions/ql-vscode/src/vscode-tests/cli-integration/legacy-query.test.ts

@@ -94,7 +94,7 @@ const queryTestCases: QueryTestCase[] = [
 ];
 
 const db: messages.Dataset = {
-  dbDir: path.join(__dirname, "../test-db"),
+  dbDir: path.join(__dirname, "../../../.vscode-test/test-db"),
   workingSet: "default",
 };
 

extensions/ql-vscode/src/vscode-tests/jest-runner-vscode.config.base.js

@@ -1,12 +1,12 @@
-import * as path from "path";
+const path = require("path");
-import * as tmp from "tmp-promise";
+const tmp = require("tmp-promise");
-import { RunnerOptions } from "jest-runner-vscode";
 
-export const tmpDir = tmp.dirSync({ unsafeCleanup: true });
+const tmpDir = tmp.dirSync({ unsafeCleanup: true });
 
-export const rootDir = path.resolve(__dirname, "../..");
+const rootDir = path.resolve(__dirname, "../..");
 
-const config: RunnerOptions = {
+/** @type import("jest-runner-vscode").RunnerOptions */
+const config = {
   version: "stable",
   launchArgs: [
     "--disable-gpu",
@@ -20,4 +20,8 @@ if (process.env.VSCODE_INSPECTOR_OPTIONS) {
   config.launchArgs?.push("--inspect-extensions", "9223");
 }
 
-export default config;
+module.exports = {
+  config,
+  tmpDir,
+  rootDir,
+};

extensions/ql-vscode/src/vscode-tests/jest.config.base.ts

@@ -93,7 +93,7 @@ const config: Config = {
   // notifyMode: "failure-change",
 
   // A preset that is used as a base for Jest's configuration
-  // preset: 'ts-jest',
+  preset: "ts-jest",
 
   // Run tests from one or more projects
   // projects: undefined,
@@ -128,7 +128,7 @@ const config: Config = {
   // setupFiles: [],
 
   // A list of paths to modules that run some code to configure or set up the testing framework before each test
-  setupFilesAfterEnv: ["<rootDir>/../jest.setup.js"],
+  setupFilesAfterEnv: ["<rootDir>/../jest.setup.ts"],
 
   // The number of seconds after which a test is considered as slow and reported as such in the results.
   // slowTestThreshold: 5,

extensions/ql-vscode/src/vscode-tests/minimal-workspace/jest-runner-vscode.config.js

@@ -0,0 +1,18 @@
+const path = require("path");
+
+const {
+  config: baseConfig,
+  rootDir,
+} = require("../jest-runner-vscode.config.base");
+
+/** @type import("jest-runner-vscode").RunnerOptions */
+const config = {
+  ...baseConfig,
+  launchArgs: [
+    ...(baseConfig.launchArgs ?? []),
+    "--disable-extensions",
+    path.resolve(rootDir, "test/data"),
+  ],
+};
+
+module.exports = config;

extensions/ql-vscode/src/vscode-tests/minimal-workspace/jest-runner-vscode.config.ts

@@ -1,17 +0,0 @@
-import * as path from "path";
-import { RunnerOptions } from "jest-runner-vscode";
-
-import baseConfig, { rootDir } from "../jest-runner-vscode.config.base";
-
-const config: RunnerOptions = {
-  ...baseConfig,
-  launchArgs: [
-    ...(baseConfig.launchArgs ?? []),
-    "--disable-extensions",
-    path.resolve(rootDir, "test/data"),
-  ],
-};
-
-// We are purposefully not using export default here since that would result in an ESModule, which doesn't seem to be
-// supported properly by jest-runner-vscode (cosmiconfig doesn't really seem to support it).
-module.exports = config;

extensions/ql-vscode/src/vscode-tests/no-workspace/jest-runner-vscode.config.js

@@ -0,0 +1,9 @@
+const { config: baseConfig } = require("../jest-runner-vscode.config.base");
+
+/** @type import("jest-runner-vscode").RunnerOptions */
+const config = {
+  ...baseConfig,
+  launchArgs: [...(baseConfig.launchArgs ?? []), "--disable-extensions"],
+};
+
+module.exports = config;

extensions/ql-vscode/src/vscode-tests/no-workspace/jest-runner-vscode.config.ts

@@ -1,12 +0,0 @@
-import { RunnerOptions } from "jest-runner-vscode";
-
-import baseConfig from "../jest-runner-vscode.config.base";
-
-const config: RunnerOptions = {
-  ...baseConfig,
-  launchArgs: [...(baseConfig.launchArgs ?? []), "--disable-extensions"],
-};
-
-// We are purposefully not using export default here since that would result in an ESModule, which doesn't seem to be
-// supported properly by jest-runner-vscode (cosmiconfig doesn't really seem to support it).
-module.exports = config;