JS: add integration test for diagnostic messages

javascript/ql/integration-tests/all-platforms/diagnostics/syntax-error/bad.js

@@ -0,0 +1 @@
+4 %%% 5

javascript/ql/integration-tests/all-platforms/diagnostics/syntax-error/diagnostics.expected

@@ -0,0 +1,21 @@
+{
+  "location": {
+    "endColumn": 4,
+    "endLine": 1,
+    "file": "bad.js",
+    "startColumn": 4,
+    "startLine": 1
+  },
+  "markdownMessage": "A parse error occurred: Unexpected token. Check the syntax of the file. If the file is invalid, correct the error or exclude the file from analysis.",
+  "severity": "warning",
+  "source": {
+    "extractorName": "javascript",
+    "id": "javascript/parse-error",
+    "name": "Parse error"
+  },
+  "visibility": {
+    "cliSummaryTable": true,
+    "statusPage": true,
+    "telemetry": true
+  }
+}

javascript/ql/integration-tests/all-platforms/diagnostics/syntax-error/test.py

@@ -0,0 +1,7 @@
+import os
+from create_database_utils import *
+from diagnostics_test_utils import *
+
+run_codeql_database_create([], lang="javascript", runFunction = runSuccessfully, db = None)
+
+check_diagnostics()

javascript/ql/integration-tests/all-platforms/qlpack.yml

@@ -0,0 +1,3 @@
+dependencies:
+  codeql/javascript-all: '*'
+  codeql/javascript-queries: '*'