Add test cases for paths with the same prefix

Author: robertbrignull

extensions/ql-vscode/test/unit-tests/pure/files.test.ts

@@ -236,6 +236,22 @@ describe("containsPath", () => {
       platform: "linux",
       expected: false,
     },
+    {
+      parent:
+        "/home/github/projects/vscode-codeql-starter/codeql-custom-queries-java",
+      child:
+        "/home/github/projects/vscode-codeql-starter/codeql-custom-queries-javascript",
+      platform: "linux",
+      expected: false,
+    },
+    {
+      parent:
+        "/home/github/projects/vscode-codeql-starter/codeql-custom-queries-java",
+      child:
+        "/home/github/projects/vscode-codeql-starter/codeql-custom-queries-javascript/example.ql",
+      platform: "linux",
+      expected: false,
+    },
     {
       parent:
         "C:/Users/github/projects/vscode-codeql-starter/codeql-custom-queries-javascript",
@@ -284,6 +300,22 @@ describe("containsPath", () => {
       platform: "win32",
       expected: false,
     },
+    {
+      parent:
+        "C:/Users/github/projects/vscode-codeql-starter/codeql-custom-queries-java",
+      child:
+        "C:/Users/github/projects/vscode-codeql-starter/codeql-custom-queries-javascript",
+      platform: "win32",
+      expected: false,
+    },
+    {
+      parent:
+        "C:/Users/github/projects/vscode-codeql-starter/codeql-custom-queries-java",
+      child:
+        "C:/Users/github/projects/vscode-codeql-starter/codeql-custom-queries-javascript/example.ql",
+      platform: "win32",
+      expected: false,
+    },
   ];
 
   test.each(testCases)(