diff --git a/client/src/test/1_ide.test.ts b/client/src/test/1_ide.test.ts
index 820ba272..ce927752 100644
--- a/client/src/test/1_ide.test.ts
+++ b/client/src/test/1_ide.test.ts
@@ -1,9 +1,10 @@
 import assert from 'assert';
 import * as path from 'path';
+import * as vscode from 'vscode';
 import { Helper } from '../Helper';
 import { Log } from '../Log';
 import { Common } from '../ViperProtocol';
-import TestHelper, { EMPTY_TXT, LONG, SETUP_TIMEOUT, SIMPLE } from './TestHelper';
+import TestHelper, { EMPTY_TXT, LONG, SETUP_TIMEOUT, SIMPLE, WARNINGS } from './TestHelper';
 
 suite('ViperIDE Tests', () => {
 
@@ -112,6 +113,16 @@ suite('ViperIDE Tests', () => {
         await opened;
         await TestHelper.closeFile();
     });
+
+    test("Test warnings", async function() {
+        this.timeout(2000);
+
+        const document = await TestHelper.openAndVerify(WARNINGS);
+        const diagnostics = vscode.languages.getDiagnostics(document.uri);
+        checkAssert(diagnostics.length, 2, `Amount of diagnostics`);
+        checkAssert(diagnostics[0].severity, vscode.DiagnosticSeverity.Warning, "First diagnostic");
+        checkAssert(diagnostics[1].severity, vscode.DiagnosticSeverity.Warning, "Second diagnostic");
+    });
 });
 
 function checkAssert<T>(seen: T, expected: T, message: string): void {
diff --git a/client/src/test/TestHelper.ts b/client/src/test/TestHelper.ts
index 83a16909..6d907275 100644
--- a/client/src/test/TestHelper.ts
+++ b/client/src/test/TestHelper.ts
@@ -27,6 +27,8 @@ export const SIMPLE = 'simple.sil';
 export const EMPTY = 'empty.sil';
 export const EMPTY_TXT = 'empty.txt';
 export const LONG = 'longDuration.vpr';
+export const WARNINGS = 'warnings.vpr';
+
 
 export default class TestHelper {
     private static callbacks: UnitTestCallbackImpl = null;
diff --git a/client/src/test/data/warnings.vpr b/client/src/test/data/warnings.vpr
new file mode 100644
index 00000000..4d8cea16
--- /dev/null
+++ b/client/src/test/data/warnings.vpr
@@ -0,0 +1,15 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/publicdomain/zero/1.0/
+
+adt List[T] {
+    Nil()
+    Cons(value: T, tail: List[T])
+}
+
+method test()
+{
+    // causes a parser warning
+    var rat: Rational
+    // causes a type-checker warning:
+    assert Nil() == Nil()
+}