test(NODE-7278): update langchainjs location

Author: durran

.evergreen/config.yml

@@ -282,10 +282,11 @@ tasks:
     tags: [local]
     commands:
       - func: "fetch repo"
+      - func: "setup local atlas"
       - func: "execute tests"
       - command: attach.xunit_results
         params:
-          file: src/langchain-js/langchainjs/libs/langchain-mongodb/results.xml
+          file: src/langchain-js/langchainjs/libs/providers/langchain-mongodb/results.xml
 
   - name: test-n8n-js-local
     tags: [local]
@@ -301,7 +302,7 @@ tasks:
       - func: "execute tests"
       - command: attach.xunit_results
         params:
-          file: src/langchain-js/langchainjs/libs/langchain-mongodb/results.xml
+          file: src/langchain-js/langchainjs/libs/providers/langchain-mongodb/results.xml
 
   - name: test-mem0-python-local
     tags: [ local ]

langchain-js/config.env

@@ -1,3 +1,4 @@
 REPO_NAME=langchainjs
-REPO_ORG=langchain-ai
+REPO_ORG=durran
 DATABASE=langchain_test_db
+REPO_BRANCH=fix-mongodb-tests

langchain-js/database/langchain_test.json

@@ -0,0 +1 @@
+[]

langchain-js/run.sh

@@ -26,16 +26,20 @@ setup_node_and_yarn() {
     export PATH
     export npm_config_prefix
 
-    npm install --global yarn
+    npm install -g pnpm@latest-10
+    npm install --global corepack --force
+    corepack enable
 }
 
 setup_langchain_integration() {
-    cd libs/langchain-mongodb
+    pnpm install
+    pnpm build
 
-    yarn install
-    yarn build
+    cd libs/providers/langchain-mongodb
+
+    pnpm install
+    pnpm build
 
-    yarn add --dev jest-junit
     export JEST_JUNIT_OUTPUT_NAME=results.xml
     # Trim trailing slashes since lanchainjs is doing string manipulationn, not
     # using the URI class.
@@ -50,4 +54,4 @@ setup_remote_atlas
 setup_node_and_yarn
 setup_langchain_integration
 
-yarn test:int --reporters=default --reporters=jest-junit
+pnpm test:int --reporter=default