diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c3a7b95..1396715 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -151,8 +151,8 @@ jobs:
 
       - name: Run unit tests (Bun)
         if: matrix.runtime.kind == 'bun'
-        run: bun x vitest --no-watch
+        run: bun x vitest --no-watch --no-file-parallelism --sequence.concurrent=false
 
       - name: Run unit tests (Deno)
         if: matrix.runtime.kind == 'deno'
-        run: deno run -A --node-modules-dir=auto npm:vitest --no-watch
+        run: deno run -A --node-modules-dir=auto npm:vitest --no-watch --no-file-parallelism --sequence.concurrent=false
diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
index 191f032..d9b1f65 100644
--- a/.vscode/c_cpp_properties.json
+++ b/.vscode/c_cpp_properties.json
@@ -3,19 +3,33 @@
     {
       "name": "linux-gcc-x64",
       "includePath": [
-        "${workspaceFolder}/**",
+        "${workspaceFolder}",
+        "${workspaceFolder}/src/cpp",
+        "${workspaceFolder}/node_modules/node-addon-api",
+        "/usr/include/node",
         "/usr/include/gstreamer-1.0",
+        "/usr/include/orc-0.4",
         "/usr/include/x86_64-linux-gnu",
         "/usr/include/glib-2.0",
-        "/usr/lib/x86_64-linux-gnu/glib-2.0/include",
-        "${workspaceFolder}/node_modules/node-addon-api"
+        "/usr/lib/x86_64-linux-gnu/glib-2.0/include"
       ],
-      "compilerPath": "/usr/lib/ccache/gcc",
-      "cStandard": "${default}",
-      "cppStandard": "${default}",
+      "browse": {
+        "path": [
+          "${workspaceFolder}/src/cpp",
+          "${workspaceFolder}/node_modules/node-addon-api",
+          "/usr/include/node",
+          "/usr/include/gstreamer-1.0",
+          "/usr/include/orc-0.4",
+          "/usr/include/x86_64-linux-gnu",
+          "/usr/include/glib-2.0",
+          "/usr/lib/x86_64-linux-gnu/glib-2.0/include"
+        ]
+      },
+      "compilerPath": "/usr/bin/g++",
+      "cStandard": "c17",
+      "cppStandard": "c++20",
       "intelliSenseMode": "linux-gcc-x64",
-      "compilerArgs": [""],
-      "defines": ["NAPI_CPP_EXCEPTIONS", "BUILDING_NODE_EXTENSION"]
+      "defines": ["NAPI_VERSION=9", "NAPI_DISABLE_CPP_EXCEPTIONS", "BUILDING_NODE_EXTENSION"]
     }
   ],
   "version": 4
diff --git a/README.md b/README.md
index a010f6a..1605928 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ This project represents a complete modernization of the old [node-gstreamer-supe
 - **Rolldown bundling**: Generates both CommonJS and ESM modules for maximum compatibility
 - **TypeScript-first**: Complete TypeScript support with full type definitions
 - **GYP build system**: Robust C++ compilation with proper dependency management
-- **Modern testing**: Uses Vitest for fast, concurrent testing instead of legacy test frameworks
+- **Modern testing**: Uses Vitest for fast testing instead of legacy test frameworks
 
 ### Enhanced Developer Experience
 
@@ -1046,7 +1046,7 @@ if (sampleResult?.type === "sample") {
 
 ### Testing & Quality
 
-- **Vitest**: Modern, fast test runner with concurrent execution
+- **Vitest**: Modern, fast test runner
 - **Oxlint**: Fast Rust-based linter with TypeScript support
 - **Prettier**: Code formatting
 - **Coverage**: Built-in test coverage reporting
@@ -1093,7 +1093,6 @@ gst-kit/
 
 ## Performance Considerations
 
-- **Concurrent Testing**: All tests run concurrently for faster execution
 - **Efficient Memory Management**: Proper buffer lifecycle management
 - **Async Operations**: Non-blocking operations for better performance
 - **Type Safety**: Compile-time error detection reduces runtime overhead
diff --git a/package.json b/package.json
index cfc09da..e40de26 100644
--- a/package.json
+++ b/package.json
@@ -15,9 +15,9 @@
     "build:native": "node-gyp rebuild",
     "build:ts": "rolldown -c rolldown.config.mjs",
     "build": "npm run clean && npm run build:native && npm run build:ts",
-    "test:unit": "vitest --no-watch",
-    "test:unit:bun": "bun x vitest --no-watch",
-    "test:unit:deno": "deno run -A --node-modules-dir=auto npm:vitest --no-watch",
+    "test:unit": "vitest --no-watch --no-file-parallelism --sequence.concurrent=false",
+    "test:unit:bun": "bun x vitest --no-watch --no-file-parallelism --sequence.concurrent=false",
+    "test:unit:deno": "deno run -A --node-modules-dir=auto npm:vitest --no-watch --no-file-parallelism --sequence.concurrent=false",
     "test": "npm run test:unit",
     "prepublishOnly": "npm run build:ts",
     "postinstall": "node scripts/ensure-native-addon.mjs",
diff --git a/src/cpp/pipeline.cpp b/src/cpp/pipeline.cpp
index 486bdf6..86a3791 100644
--- a/src/cpp/pipeline.cpp
+++ b/src/cpp/pipeline.cpp
@@ -295,8 +295,7 @@ Napi::Value Pipeline::end_of_stream(const Napi::CallbackInfo &info) {
   }
 
   // Send EOS event to the pipeline
-  gboolean result =
-    gst_element_send_event(GST_ELEMENT(pipeline.get()), gst_event_new_eos());
+  gboolean result = gst_element_send_event(GST_ELEMENT(pipeline.get()), gst_event_new_eos());
 
   return Napi::Boolean::New(env, result);
 }
diff --git a/src/ts/appsink.test.ts b/src/ts/appsink.test.ts
index 639e752..1ca8f88 100644
--- a/src/ts/appsink.test.ts
+++ b/src/ts/appsink.test.ts
@@ -2,7 +2,7 @@ import { describe, expect, it } from "vitest";
 import { Pipeline, type GStreamerSample } from ".";
 import { arePluginsAvailable } from "./test-utils";
 
-describe.concurrent("AppSink", () => {
+describe("AppSink", () => {
   it("should pull frames", async () => {
     const pipeline = new Pipeline("videotestsrc ! videoconvert ! appsink name=sink");
     const sink = pipeline.getElementByName("sink");
@@ -13,7 +13,7 @@ describe.concurrent("AppSink", () => {
 
     const result = await sink.getSample();
 
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(result).not.toBeNull();
     expect(result?.buffer).toBeDefined();
@@ -34,7 +34,7 @@ describe.concurrent("AppSink", () => {
 
       const result = await sink.getSample(10);
 
-      pipeline.stop();
+      await pipeline.stop();
 
       expect(result).toBeNull();
     }
@@ -48,7 +48,7 @@ describe.concurrent("AppSink", () => {
 
     const result = await sink.getSample();
 
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(result).toBeNull();
   });
@@ -74,7 +74,7 @@ describe.concurrent("AppSink", () => {
       currFrames++;
     }
 
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(currFrames).toBe(frames);
   });
@@ -102,7 +102,7 @@ describe.concurrent("AppSink", () => {
     });
 
     unsubscribe();
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(samples).toHaveLength(frames);
     expect(samples[0].buffer).toBeDefined();
diff --git a/src/ts/appsrc-eos.test.ts b/src/ts/appsrc-eos.test.ts
index 34ff4de..b29547a 100644
--- a/src/ts/appsrc-eos.test.ts
+++ b/src/ts/appsrc-eos.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from "vitest";
 import { Pipeline, type GstMessage } from ".";
 
-describe.concurrent("AppSrc End-of-Stream", () => {
+describe("AppSrc End-of-Stream", () => {
   it("should send EOS signal through endOfStream method", async () => {
     const pipeline = new Pipeline("appsrc name=source ! fakesink");
     const source = pipeline.getElementByName("source");
diff --git a/src/ts/appsrc.test.ts b/src/ts/appsrc.test.ts
index e41c25a..343f96f 100644
--- a/src/ts/appsrc.test.ts
+++ b/src/ts/appsrc.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from "vitest";
 import { Pipeline } from ".";
 
-describe.concurrent("AppSrc", () => {
+describe("AppSrc", () => {
   it("should push buffer to app source", () => {
     const pipeline = new Pipeline("appsrc name=source ! fakesink");
     const source = pipeline.getElementByName("source");
diff --git a/src/ts/bus-pop.test.ts b/src/ts/bus-pop.test.ts
index 8b68b25..667728a 100644
--- a/src/ts/bus-pop.test.ts
+++ b/src/ts/bus-pop.test.ts
@@ -2,14 +2,14 @@ import { describe, expect, it } from "vitest";
 import { Pipeline, type GstMessage } from ".";
 import { isWindows } from "./test-utils";
 
-describe.concurrent("Pipeline busPop Method", () => {
+describe("Pipeline busPop Method", () => {
   it("should return null when no message available with timeout", async () => {
     const pipeline = new Pipeline("videotestsrc ! fakesink");
 
     // Try to pop a message with a very short timeout (10ms)
     const message = await pipeline.busPop(10);
 
-    pipeline.stop();
+    await pipeline.stop();
 
     // Should return null when timeout expires with no messages
     expect(message).toBeNull();
@@ -24,7 +24,7 @@ describe.concurrent("Pipeline busPop Method", () => {
     // Pop a message with reasonable timeout
     const message = await pipeline.busPop(1000);
 
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(message).not.toBeNull();
     expect(typeof message?.type).toBe("string");
@@ -52,7 +52,7 @@ describe.concurrent("Pipeline busPop Method", () => {
       }
     }
 
-    pipeline.stop();
+    await pipeline.stop();
 
     // Should have found at least one message during pipeline startup
     expect(foundMessage).toBe(true);
@@ -66,7 +66,7 @@ describe.concurrent("Pipeline busPop Method", () => {
 
     const message = await pipeline.busPop(1000);
 
-    pipeline.stop();
+    await pipeline.stop();
 
     if (message && message.type === "error") {
       expect(message.errorMessage).toBeDefined();
@@ -84,7 +84,7 @@ describe.concurrent("Pipeline busPop Method", () => {
     const endTime = Date.now();
     const elapsed = endTime - startTime;
 
-    pipeline.stop();
+    await pipeline.stop();
 
     // Should timeout within a reasonable range (timing varies by platform)
     expect(elapsed).toBeGreaterThan(80);
@@ -101,7 +101,7 @@ describe.concurrent("Pipeline busPop Method", () => {
     // Use -1 for infinite timeout, but pipeline should generate EOS quickly
     const message = await pipeline.busPop(-1);
 
-    pipeline.stop();
+    await pipeline.stop();
 
     // Should get a message (likely EOS or state-changed)
     expect(message).not.toBeNull();
@@ -127,7 +127,7 @@ describe.concurrent("Pipeline busPop Method", () => {
       }
     }
 
-    pipeline.stop();
+    await pipeline.stop();
 
     if (messageWithStructure) {
       expect(messageWithStructure.structureName).toBeDefined();
diff --git a/src/ts/codec.test.ts b/src/ts/codec.test.ts
index 1409d52..f1fc568 100644
--- a/src/ts/codec.test.ts
+++ b/src/ts/codec.test.ts
@@ -2,7 +2,7 @@ import { describe, expect, it } from "vitest";
 import { Pipeline, type GStreamerSample, GstBufferFlags, type BufferData } from ".";
 import { arePluginsAvailable } from "./test-utils";
 
-describe.concurrent("codec", () => {
+describe("codec", () => {
   it.skipIf(!arePluginsAvailable(["x264enc", "rtph264pay", "rtph264depay", "h264parse"]))(
     "should be able to distinguish between delta and key frames",
     async () => {
@@ -26,7 +26,7 @@ describe.concurrent("codec", () => {
         currFrames++;
       }
 
-      pipeline.stop();
+      await pipeline.stop();
 
       const keyFrame = samples.find(e =>
         e.flags ? !(e.flags & GstBufferFlags.GST_BUFFER_FLAG_DELTA_UNIT) : false
@@ -60,7 +60,7 @@ describe.concurrent("codec", () => {
       });
 
       unsubscribe();
-      pipeline.stop();
+      await pipeline.stop();
 
       expect(bufferData).toBeDefined();
       expect(bufferData.buffer).toBeDefined();
diff --git a/src/ts/element-props.test.ts b/src/ts/element-props.test.ts
index feaf345..3f7a9b8 100644
--- a/src/ts/element-props.test.ts
+++ b/src/ts/element-props.test.ts
@@ -1,13 +1,11 @@
 import { describe, it, expect } from "vitest";
 import { Pipeline } from "./";
 
-describe.concurrent("Element Properties", () => {
+describe("Element Properties", () => {
   it("should get prop value", async () => {
     const caps = "video/x-raw,format=(string)GRAY8";
     const pipeline = new Pipeline(`videotestsrc ! capsfilter name=target caps=${caps} ! fakesink`);
 
-    await pipeline.play();
-
     const element = pipeline.getElementByName("target");
 
     if (!element) throw new Error("Element not found");
@@ -17,8 +15,6 @@ describe.concurrent("Element Properties", () => {
     expect(prop).not.toBeNull();
     expect(prop?.type).toBe("primitive");
     caps.split(",").forEach(cap => expect(prop?.value).toContain(cap));
-
-    await pipeline.stop();
   });
 
   it("should set string property", () => {
diff --git a/src/ts/fakesink.test.ts b/src/ts/fakesink.test.ts
index 1e902b5..8b9f2e0 100644
--- a/src/ts/fakesink.test.ts
+++ b/src/ts/fakesink.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from "vitest";
 import { Pipeline, type GStreamerSample } from ".";
 
-describe.concurrent("FakeSink", () => {
+describe("FakeSink", () => {
   it("should capture last sample when enabled", async () => {
     const pipeline = new Pipeline("videotestsrc ! fakesink enable-last-sample=true name=sink");
     const fakesink = pipeline.getElementByName("sink");
@@ -13,7 +13,7 @@ describe.concurrent("FakeSink", () => {
     // Get the last sample
     const sampleResult = fakesink.getElementProperty("last-sample");
 
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(sampleResult).not.toBeNull();
     expect(sampleResult?.type).toBe("sample");
@@ -45,7 +45,7 @@ describe.concurrent("FakeSink", () => {
     // Try to get the last sample (should be null since it's disabled)
     const sampleResult = fakesink.getElementProperty("last-sample");
 
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(sampleResult).toBeNull();
   });
@@ -82,7 +82,7 @@ describe.concurrent("FakeSink", () => {
 
     const sampleResult = fakesink.getElementProperty("last-sample");
 
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(sampleResult).not.toBeNull();
     expect(sampleResult?.type).toBe("sample");
@@ -108,7 +108,7 @@ describe.concurrent("FakeSink", () => {
 
     const sampleResult = fakesink.getElementProperty("last-sample");
 
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(sampleResult).not.toBeNull();
     expect(sampleResult?.type).toBe("sample");
diff --git a/src/ts/pipeline-eos.test.ts b/src/ts/pipeline-eos.test.ts
index 787bf06..a344f4a 100644
--- a/src/ts/pipeline-eos.test.ts
+++ b/src/ts/pipeline-eos.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from "vitest";
 import { Pipeline, type GstMessage } from ".";
 
-describe.concurrent("Pipeline EOS - State-Gated Dispatch", () => {
+describe("Pipeline EOS - State-Gated Dispatch", () => {
   it("should return true when pipeline is in PLAYING state", async () => {
     const pipeline = new Pipeline("videotestsrc ! fakesink");
 
@@ -10,6 +10,8 @@ describe.concurrent("Pipeline EOS - State-Gated Dispatch", () => {
     const result = pipeline.endOfStream();
     expect(result).toBe(true);
 
+    await new Promise(resolve => setTimeout(resolve, 30));
+
     await pipeline.stop();
   });
 
@@ -21,6 +23,8 @@ describe.concurrent("Pipeline EOS - State-Gated Dispatch", () => {
     const result = pipeline.endOfStream();
     expect(result).toBe(true);
 
+    await new Promise(resolve => setTimeout(resolve, 30));
+
     await pipeline.stop();
   });
 
@@ -30,6 +34,8 @@ describe.concurrent("Pipeline EOS - State-Gated Dispatch", () => {
     const result = pipeline.endOfStream();
     expect(result).toBe(false);
 
+    await new Promise(resolve => setTimeout(resolve, 30));
+
     await pipeline.stop();
   });
 
@@ -53,6 +59,8 @@ describe.concurrent("Pipeline EOS - State-Gated Dispatch", () => {
       }
     }
 
+    await new Promise(resolve => setTimeout(resolve, 30));
+
     await pipeline.stop();
 
     expect(eosMessage).not.toBeNull();
@@ -72,6 +80,8 @@ describe.concurrent("Pipeline EOS - State-Gated Dispatch", () => {
     expect(result2).toBe(true);
     expect(result3).toBe(true);
 
+    await new Promise(resolve => setTimeout(resolve, 30));
+
     await pipeline.stop();
   });
 
@@ -83,6 +93,8 @@ describe.concurrent("Pipeline EOS - State-Gated Dispatch", () => {
     const resultWhilePlaying = pipeline.endOfStream();
     expect(resultWhilePlaying).toBe(true);
 
+    await new Promise(resolve => setTimeout(resolve, 30));
+
     await pipeline.stop();
 
     const resultAfterStop = pipeline.endOfStream();
diff --git a/src/ts/pipeline-pad.test.ts b/src/ts/pipeline-pad.test.ts
index 95411a2..814fc2e 100644
--- a/src/ts/pipeline-pad.test.ts
+++ b/src/ts/pipeline-pad.test.ts
@@ -1,7 +1,7 @@
 import { describe, it, expect } from "vitest";
 import { Pipeline } from "./";
 
-describe.concurrent("Pipeline Pad Methods", () => {
+describe("Pipeline Pad Methods", () => {
   it("should get pad information from an element", () => {
     const pipeline = new Pipeline("videotestsrc name=source ! fakesink name=sink");
     const element = pipeline.getElementByName("source");
@@ -57,6 +57,8 @@ describe.concurrent("Pipeline Pad Methods", () => {
     expect(() => sel.setPad("active-pad", "sink_0")).not.toThrow();
     expect(() => sel.setPad("active-pad", "sink_1")).not.toThrow();
     expect(() => sel.setPad("active-pad", "sink_0")).not.toThrow();
+
+    await pipeline.stop();
   });
 
   it("should throw error for setPad with invalid element", () => {
diff --git a/src/ts/pipeline-query.test.ts b/src/ts/pipeline-query.test.ts
index 22542f5..8fb1c03 100644
--- a/src/ts/pipeline-query.test.ts
+++ b/src/ts/pipeline-query.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from "vitest";
 import { Pipeline } from ".";
 
-describe.concurrent("Pipeline Query Methods", () => {
+describe("Pipeline Query Methods", () => {
   it("should query position from videotestsrc pipeline", async () => {
     const pipeline = new Pipeline("videotestsrc num-buffers=100 ! fakesink");
 
@@ -9,7 +9,7 @@ describe.concurrent("Pipeline Query Methods", () => {
 
     const position = pipeline.queryPosition();
 
-    pipeline.stop();
+    await pipeline.stop();
 
     // Position should be a number (could be -1 if not available)
     expect(typeof position).toBe("number");
@@ -22,7 +22,7 @@ describe.concurrent("Pipeline Query Methods", () => {
 
     const duration = pipeline.queryDuration();
 
-    pipeline.stop();
+    await pipeline.stop();
 
     // Duration should be a number (could be -1 if not available)
     expect(typeof duration).toBe("number");
@@ -54,7 +54,7 @@ describe.concurrent("Pipeline Query Methods", () => {
 
     const position2 = pipeline.queryPosition();
 
-    pipeline.stop();
+    await pipeline.stop();
 
     expect(typeof position1).toBe("number");
     expect(typeof position2).toBe("number");
diff --git a/src/ts/pipeline-seek.test.ts b/src/ts/pipeline-seek.test.ts
index ab9e181..d198eff 100644
--- a/src/ts/pipeline-seek.test.ts
+++ b/src/ts/pipeline-seek.test.ts
@@ -2,7 +2,7 @@ import { describe, expect, it } from "vitest";
 import { Pipeline } from ".";
 import { isWindows } from "./test-utils";
 
-describe.concurrent("Pipeline Seek Method", () => {
+describe("Pipeline Seek Method", () => {
   it("should seek to a specific position in a video pipeline", async () => {
     const pipeline = new Pipeline(
       "videotestsrc num-buffers=300 ! video/x-raw,framerate=30/1 ! fakesink"
diff --git a/src/ts/pipeline-state.test.ts b/src/ts/pipeline-state.test.ts
index 9a54a4a..41fa102 100644
--- a/src/ts/pipeline-state.test.ts
+++ b/src/ts/pipeline-state.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from "vitest";
 import { Pipeline } from ".";
 
-describe.concurrent("Pipeline State Management", () => {
+describe("Pipeline State Management", () => {
   it("should play a pipeline", async () => {
     const pipeline = new Pipeline("videotestsrc ! fakesink");
 
@@ -127,6 +127,8 @@ describe.concurrent("Pipeline State Management", () => {
     expect(positionWhilePlaying).toBeGreaterThan(0);
     expect(positionWhilePaused).toBeGreaterThanOrEqual(0);
     expect(positionAfterResume).toBeGreaterThan(0);
+
+    await pipeline.stop();
   });
 
   it("should provide detailed state change information", async () => {
diff --git a/src/ts/rtp-stats.test.ts b/src/ts/rtp-stats.test.ts
index 013c544..a4dc1e8 100644
--- a/src/ts/rtp-stats.test.ts
+++ b/src/ts/rtp-stats.test.ts
@@ -2,7 +2,7 @@ import { describe, expect, it } from "vitest";
 import { Pipeline, type BufferData } from ".";
 import { arePluginsAvailable } from "./test-utils";
 
-describe.concurrent("RTP Statistics", () => {
+describe("RTP Statistics", () => {
   it.skipIf(!arePluginsAvailable(["x264enc", "rtph264pay", "rtph264depay", "h264parse"]))(
     "should extract RTP stats from rtph264depay stats property",
     async () => {
@@ -18,7 +18,7 @@ describe.concurrent("RTP Statistics", () => {
 
       const statsResult = depayloader.getElementProperty("stats");
 
-      pipeline.stop();
+      await pipeline.stop();
 
       expect(statsResult).toBeDefined();
       expect(statsResult).not.toBeNull();
@@ -76,7 +76,7 @@ describe.concurrent("RTP Statistics", () => {
 
       const statsResult = depayloader.getElementProperty("stats");
 
-      pipeline.stop();
+      await pipeline.stop();
 
       // Verify pad probe captured RTP data
       expect(padProbeRtpData).toBeDefined();
@@ -101,7 +101,7 @@ describe.concurrent("RTP Statistics", () => {
 
     const statsResult = sink.getElementProperty("stats");
 
-    pipeline.stop();
+    await pipeline.stop();
 
     // fakesink has stats but different type (basesink stats, not RTP depayload stats)
     expect(statsResult).toBeDefined();
diff --git a/vitest.config.ts b/vitest.config.ts
index 34590cc..d9c07f4 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -10,7 +10,7 @@ export default defineConfig({
       reporter: ["text", "json", "html"],
       exclude: ["node_modules/", "dist/"],
     },
-    slowTestThreshold: 2000,
+    slowTestThreshold: 5000,
     testTimeout: 20000,
     env: {
       NODE_ENV: "test",