diff --git a/.vscodeignore b/.vscodeignore
index a581074c..0be96362 100644
--- a/.vscodeignore
+++ b/.vscodeignore
@@ -1,6 +1,7 @@
 .vscode/**
 .vscode-test/**
 fixtures/**
+test/**
 out/test/**
 src/**
 .gitignore
diff --git a/package-lock.json b/package-lock.json
index 07f470c2..9ad2eb10 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,10 +4,53 @@
     "lockfileVersion": 1,
     "requires": true,
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+            "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
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+            "dev": true,
+            "requires": {
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+            }
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+        "@babel/highlight": {
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+            "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
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+            "dev": true,
+            "requires": {
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+                "esutils": "^2.0.2",
+                "js-tokens": "^4.0.0"
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+            "resolved": "https://registry.npmjs.org/@types/events/-/events-3.0.0.tgz",
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+            "dev": true
+        },
+        "@types/glob": {
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+            "resolved": "https://registry.npmjs.org/@types/glob/-/glob-7.1.1.tgz",
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+            "dev": true,
+            "requires": {
+                "@types/events": "*",
+                "@types/minimatch": "*",
+                "@types/node": "*"
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+            "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.3.tgz",
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+            "dev": true
+        },
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-            "integrity": "sha1-A8VFicQ60EjLy/1jmZtV0EJO7Cc=",
+            "version": "5.2.7",
+            "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-5.2.7.tgz",
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@@ -22,40 +65,25 @@
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-            "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.0.tgz",
-            "integrity": "sha512-nffhOpkymDECQyR0mnsUtoCE8RlX38G0rYP+wgLWFyZuUyuuojSSvi/+euOiQBIn63whYwYVIIH1TvE3tu4OEg==",
-            "dev": true,
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-                "json-schema-traverse": "^0.4.1",
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-            "integrity": "sha1-U4rlKK+JgvKK4w2G8vF0VtJgmHM=",
+        "agent-base": {
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+            "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-4.3.0.tgz",
+            "integrity": "sha512-salcGninV0nPrwpGNn4VTXBb1SOuXQBiqbrNXoeizJsHrsL6ERFM2Ne3JUSBWRE6aeNJI2ROP/WEEIDUiDe3cg==",
             "dev": true,
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-                "ansi-wrap": "0.1.0"
+                "es6-promisify": "^5.0.0"
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-        "ansi-red": {
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-            "resolved": "https://registry.npmjs.org/ansi-red/-/ansi-red-0.1.1.tgz",
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-            "dev": true,
-            "requires": {
-                "ansi-wrap": "0.1.0"
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+        "ansi-colors": {
+            "version": "3.2.3",
+            "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-3.2.3.tgz",
+            "integrity": "sha512-LEHHyuhlPY3TmuUYMh2oz89lTShfvgbmzaBcxve9t/9Wuy7Dwf4yoAKcND7KFT1HAQfqZ12qtc+DUrBMeKF9nw==",
+            "dev": true
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-            "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+            "version": "3.0.0",
+            "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+            "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
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@@ -67,21 +95,6 @@
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@@ -91,94 +104,6 @@
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@@ -191,68 +116,12 @@
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@@ -270,9 +139,9 @@
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-            "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
+            "version": "1.3.1",
+            "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.1.tgz",
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@@ -281,28 +150,16 @@
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-            "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
+        "camelcase": {
+            "version": "5.3.1",
+            "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+            "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
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@@ -314,6 +171,17 @@
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+                    "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
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+                    "dev": true,
+                    "requires": {
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@@ -330,61 +198,23 @@
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+                        "set-blocking": "^2.0.0",
+                        "string-width": "^2.0.0",
+                        "which-module": "^2.0.0",
+                        "y18n": "^3.2.1 || ^4.0.0",
+                        "yargs-parser": "^11.1.1"
+                    }
+                },
+                "yargs-parser": {
+                    "version": "11.1.1",
+                    "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+                    "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
+                    "dev": true,
                     "requires": {
-                        "has-flag": "^2.0.0"
+                        "camelcase": "^5.0.0",
+                        "decamelize": "^1.2.0"
                     }
                 }
             }
         },
-        "vscode-jsonrpc": {
-            "version": "3.6.2",
-            "resolved": "https://registry.npmjs.org/vscode-jsonrpc/-/vscode-jsonrpc-3.6.2.tgz",
-            "integrity": "sha512-T24Jb5V48e4VgYliUXMnZ379ItbrXgOimweKaJshD84z+8q7ZOZjJan0MeDe+Ugb+uqERDVV8SBmemaGMSMugA=="
-        },
-        "vscode-languageclient": {
-            "version": "4.3.0",
-            "resolved": "https://registry.npmjs.org/vscode-languageclient/-/vscode-languageclient-4.3.0.tgz",
-            "integrity": "sha512-vDpsmYfYpfuyDKZ46pCJEFBOCNHepRBSmlBGA0fczEbYghYm059BiFo3SmT4MK1r8NvYrFEem4k5TYNW3wommg==",
-            "requires": {
-                "vscode-languageserver-protocol": "^3.9.0"
-            }
-        },
-        "vscode-languageserver-protocol": {
-            "version": "3.9.0",
-            "resolved": "https://registry.npmjs.org/vscode-languageserver-protocol/-/vscode-languageserver-protocol-3.9.0.tgz",
-            "integrity": "sha512-i1sG5iU88Mocc7egTeh6dAow/yRWpPK5PLJaxsWsKiA+dspq1Yzr/R1bNLPc+6P/ab010lXhzdUHQY0CuIUyDw==",
-            "requires": {
-                "vscode-jsonrpc": "^3.6.2",
-                "vscode-languageserver-types": "^3.9.0"
-            }
-        },
-        "vscode-languageserver-types": {
-            "version": "3.9.0",
-            "resolved": "https://registry.npmjs.org/vscode-languageserver-types/-/vscode-languageserver-types-3.9.0.tgz",
-            "integrity": "sha512-Qzh3VsU3t0zhKtYl1revyax+4gGHl2ejNzYXeiZYQMF3i0vX4dtPohxGDFoZYfGFQI738aXYbSUQmhLeBckDlQ=="
-        },
-        "wrappy": {
-            "version": "1.0.2",
-            "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-            "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-            "dev": true
-        },
-        "xtend": {
-            "version": "4.0.1",
-            "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
-            "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
-            "dev": true
-        },
         "yauzl": {
             "version": "2.10.0",
             "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
diff --git a/package.json b/package.json
index 8fea7884..91603fbb 100644
--- a/package.json
+++ b/package.json
@@ -38,13 +38,13 @@
         "onLanguage:rust",
         "workspaceContains:Cargo.toml"
     ],
-    "main": "./out/extension.js",
+    "main": "./out/src/extension.js",
     "scripts": {
         "vscode:prepublish": "npm run check:version && npm run lint && npm run compile",
         "compile": "tsc -p ./",
         "watch": "tsc -watch -p ./",
         "lint": "tslint --config ./tslint.json './src/**/*.ts'",
-        "test": "npm run compile && node ./node_modules/vscode/bin/test",
+        "test": "node ./out/test/runTest.js",
         "prettier": "prettier **/*.ts",
         "check:version": "node cmd/check-version.js",
         "installDevExtension": "npm install && ./node_modules/.bin/vsce package -o ./out/rls-vscode-dev.vsix && code --install-extension ./out/rls-vscode-dev.vsix"
@@ -53,15 +53,18 @@
         "vscode-languageclient": "^4.3.0"
     },
     "devDependencies": {
-        "@types/mocha": "^2.2.43",
+        "@types/glob": "^7.1.1",
+        "@types/mocha": "^5.2.6",
         "@types/node": "~10.1.0",
         "@types/vscode": "^1.31.0",
+        "glob": "^7.1.4",
+        "mocha": "^6.1.4",
         "prettier": "^1.16.4",
         "tslint": "^5.14.0",
         "tslint-config-prettier": "^1.18.0",
         "typescript": "^3.0.0",
         "vsce": "^1.63.0",
-        "vscode": "^1.1.30"
+        "vscode-test": "^0.4.3"
     },
     "contributes": {
         "languages": [
diff --git a/src/test/index.ts b/src/test/index.ts
deleted file mode 100644
index daf9c47f..00000000
--- a/src/test/index.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-//
-// PLEASE DO NOT MODIFY / DELETE UNLESS YOU KNOW WHAT YOU ARE DOING
-//
-// This file is providing the test runner to use when running extension tests.
-// By default the test runner in use is Mocha based.
-//
-// You can provide your own test runner if you want to override it by exporting
-// a function run(testsRoot: string, clb: (error: Error, failures?: number) => void): void
-// that the extension host can call to run the tests. The test runner is expected to use console.log
-// to report the results back to the caller. When the tests are finished, return
-// a possible error to the callback or null if none.
-
-// tslint:disable-next-line: no-submodule-imports
-import * as testRunner from 'vscode/lib/testrunner';
-
-// You can directly control Mocha options by configuring the test runner below
-// See https://github.com/mochajs/mocha/wiki/Using-mocha-programmatically#set-options
-// for more info
-testRunner.configure({
-  ui: 'tdd', // the TDD UI is being used in extension.test.ts (suite, test, etc.)
-  useColors: true, // colored output from test results
-});
-
-module.exports = testRunner;
diff --git a/test/runTest.ts b/test/runTest.ts
new file mode 100644
index 00000000..27ef1a82
--- /dev/null
+++ b/test/runTest.ts
@@ -0,0 +1,36 @@
+//
+// PLEASE DO NOT MODIFY / DELETE UNLESS YOU KNOW WHAT YOU ARE DOING
+//
+// This file is providing the test runner to use when running extension tests.
+// By default the test runner in use is Mocha based.
+//
+// You can provide your own test runner if you want to override it by exporting
+// a function run(testsRoot: string, clb: (error: Error, failures?: number) => void): void
+// that the extension host can call to run the tests. The test runner is expected to use console.log
+// to report the results back to the caller. When the tests are finished, return
+// a possible error to the callback or null if none.
+
+// tslint:disable-next-line: no-submodule-imports
+// import * as testRunner from 'vscode/lib/testrunner';
+
+import * as path from 'path';
+import { runTests } from 'vscode-test';
+
+(async () => {
+  const extensionPath = path.resolve(__dirname, '../../');
+  const testRunnerPath = path.resolve(__dirname, './suite');
+
+  await runTests({
+    extensionPath,
+    testRunnerPath,
+  });
+})();
+
+// // You can directly control Mocha options by configuring the test runner below
+// // See https://github.com/mochajs/mocha/wiki/Using-mocha-programmatically#set-options
+// // for more info
+// testRunner.configure({
+//   ui: 'tdd', // the TDD UI is being used in extension.test.ts (suite, test, etc.)
+//   useColors: true, // colored output from test results
+// });
+// module.exports = run;
diff --git a/src/test/extension.test.ts b/test/suite/extension.test.ts
similarity index 98%
rename from src/test/extension.test.ts
rename to test/suite/extension.test.ts
index 13366706..9a181727 100644
--- a/src/test/extension.test.ts
+++ b/test/suite/extension.test.ts
@@ -4,7 +4,7 @@ import * as vscode from 'vscode';
 // tslint:disable-next-line: no-duplicate-imports
 import { Uri } from 'vscode';
 
-const fixtureDir = path.resolve(path.join(__dirname, '..', '..', 'fixtures'));
+const fixtureDir = path.resolve(path.join(__dirname, '..', '..', '..', 'fixtures'));
 
 suite('Extension Tests', () => {
   test('cargo tasks are auto-detected', async () => {
diff --git a/test/suite/index.ts b/test/suite/index.ts
new file mode 100644
index 00000000..6c1c4e84
--- /dev/null
+++ b/test/suite/index.ts
@@ -0,0 +1,32 @@
+import * as glob from 'glob';
+import * as Mocha from 'mocha';
+import * as path from 'path';
+
+export function run(
+  testsRoot: string,
+  // tslint:disable-next-line: no-any
+  cb: (error: any, failures?: number) => void,
+): void {
+  // Create the mocha test
+  const mocha = new Mocha({
+    ui: 'tdd',
+  }).useColors(true);
+
+  glob('**/**.test.js', { cwd: testsRoot }, (err, files) => {
+    if (err) {
+      return cb(err);
+    }
+
+    // Add files to the test suite
+    files.forEach(f => mocha.addFile(path.resolve(testsRoot, f)));
+
+    try {
+      // Run the mocha test
+      mocha.run(failures => {
+        cb(null, failures);
+      });
+    } catch (err) {
+      cb(err);
+    }
+  });
+}
diff --git a/src/test/rustup.test.ts b/test/suite/rustup.test.ts
similarity index 93%
rename from src/test/rustup.test.ts
rename to test/suite/rustup.test.ts
index 4ffd351f..1c672c00 100644
--- a/src/test/rustup.test.ts
+++ b/test/suite/rustup.test.ts
@@ -1,7 +1,7 @@
 import * as assert from 'assert';
 import * as child_process from 'child_process';
 
-import * as rustup from '../rustup';
+import * as rustup from '../../src/rustup';
 
 // We need to ensure that rustup works and is installed
 const rustupVersion = child_process.execSync('rustup --version').toString();
diff --git a/src/test/utils/wslpath.test.ts b/test/suite/utils/wslpath.test.ts
similarity index 95%
rename from src/test/utils/wslpath.test.ts
rename to test/suite/utils/wslpath.test.ts
index ef52f284..2cdf2a42 100644
--- a/src/test/utils/wslpath.test.ts
+++ b/test/suite/utils/wslpath.test.ts
@@ -1,6 +1,6 @@
 import * as assert from 'assert';
 
-import * as wslpath from '../../utils/wslpath';
+import * as wslpath from '../../../src/utils/wslpath';
 
 function mkConverterCheck(converter: (arg: string) => string) {
   return (from: string, to: string) => assert.equal(converter(from), to);
diff --git a/tsconfig.json b/tsconfig.json
index cb1b7176..72db7d34 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,13 +5,13 @@
         "outDir": "out",
         "lib": ["es6"],
         "sourceMap": true,
-        "rootDir": "src",
         "strict": true,
         "noUnusedLocals": true,
         "noUnusedParameters": true,
         "noImplicitReturns": true,
         "noFallthroughCasesInSwitch": true
     },
+    "include": ["src", "test"],
     "exclude": [
         "node_modules",
         ".vscode-test"