Fix doc walker tests not running

See mochajs/mocha#2975.

src/data/noncached.ts

@@ -8,7 +8,7 @@ export const rootNodePath = require.resolve("mc-nbt-paths/root.json");
 export const modulePath = path.dirname(rootNodePath);
 
 export async function setupFiles(dir: string = modulePath): Promise<MemoryFS> {
-    const docfs = new MemoryFS(modulePath);
+    const docfs = new MemoryFS(dir);
     const paths = await walkDir(dir);
     const promises: Array<Promise<void>> = [];
     for (const p of paths) {

src/index.ts

@@ -11,7 +11,6 @@ import {
     IPCMessageWriter,
     TextDocumentSyncKind
 } from "vscode-languageserver/lib/main";
-import { mergeDeep } from "./misc-functions/third_party/merge-deep";
 
 import { computeCompletions } from "./completions";
 import { readSecurity } from "./data/cache";
@@ -26,6 +25,7 @@ import {
     setup_logging,
     splitLines
 } from "./misc-functions";
+import { mergeDeep } from "./misc-functions/third_party/merge-deep";
 import { parseDocument, parseLines } from "./parse";
 import { FunctionInfo, MiscInfo, WorkspaceSecurity } from "./types";
 

src/test/parsers/minecraft/nbt/doc-walker.test.ts

@@ -1,21 +1,28 @@
 import * as assert from "assert";
 import * as path from "path";
 import { setupFiles } from "../../../../data/noncached";
+import { MemoryFS } from "../../../../parsers/minecraft/nbt/doc-fs";
 import { NBTWalker } from "../../../../parsers/minecraft/nbt/doc-walker";
 import { NBTTagCompound } from "../../../../parsers/minecraft/nbt/tag/compound-tag";
 import { NBTTagString } from "../../../../parsers/minecraft/nbt/tag/string-tag";
 
 describe("Documentation Walker Tests", () => {
     describe("getFinalNode()", async () => {
-        const nbt = new NBTTagCompound({ var1: new NBTTagString("func_test") });
-        const dataPath = path.resolve(
-            __dirname,
-            "../../../../../test_data/test_docs"
-        );
+        before(async () => {
+            const nbt = new NBTTagCompound({
+                var1: new NBTTagString("func_test")
+            });
+            const dataPath = path.resolve(
+                __dirname,
+                "../../../../../test_data/test_docs"
+            );
+            v = await setupFiles(dataPath);
+            walker = new NBTWalker(nbt, v, "root.json");
+        });
 
-        const v = await setupFiles(path.dirname(dataPath));
+        let v: MemoryFS;
+        let walker: NBTWalker;
 
-        const walker = new NBTWalker(nbt, v, "root.json");
         it("should return the correct node for the basic doc", () => {
             const node = walker.getFinalNode(["basic_test"]);
             if (!node) {