diff --git a/src/RedPill.tsx b/src/RedPill.tsx
index 2b566b4d9..217c0aebc 100644
--- a/src/RedPill.tsx
+++ b/src/RedPill.tsx
@@ -10,6 +10,7 @@ import { Page } from "./ui/Router";
 import { prestigeSourceFile } from "./Prestige";
 import { getDefaultBitNodeOptions, setBitNodeOptions } from "./BitNode/BitNodeUtils";
 import { prestigeWorkerScripts } from "./NetscriptWorker";
+import { exceptionAlert } from "./utils/helpers/exceptionAlert";
 
 function giveSourceFile(bitNodeNumber: number): void {
   const sourceFileKey = "SourceFile" + bitNodeNumber.toString();
@@ -76,14 +77,7 @@ export function enterBitNode(
   try {
     setBitNodeOptions(bitNodeOptions);
   } catch (error) {
-    dialogBoxCreate(
-      <>
-        Invalid BitNode options. This is a bug. Please report it to developers.
-        <br />
-        <br />
-        {error instanceof Error ? error.stack : String(error)}
-      </>,
-    );
+    exceptionAlert(error);
     // Use default options
     setBitNodeOptions(getDefaultBitNodeOptions());
   }
diff --git a/src/Server/AllServers.ts b/src/Server/AllServers.ts
index f2c5ba30b..4b4fbd110 100644
--- a/src/Server/AllServers.ts
+++ b/src/Server/AllServers.ts
@@ -44,6 +44,25 @@ export function GetServer(s: string): BaseServer | null {
   return null;
 }
 
+/**
+ * In our codebase, we usually have to call GetServer() like this:
+ * ```
+ * const server = GetServer(hostname);
+ * if (!server) {
+ *   throw new Error("Error message");
+ * }
+ * // Use server
+ * ```
+ * With this utility function, we don't need to write boilerplate code.
+ */
+export function GetServerOrThrow(serverId: string): BaseServer {
+  const server = GetServer(serverId);
+  if (!server) {
+    throw new Error(`Server ${serverId} does not exist.`);
+  }
+  return server;
+}
+
 //Get server by IP or hostname. Returns null if invalid or unreachable.
 export function GetReachableServer(s: string): BaseServer | null {
   const server = GetServer(s);
diff --git a/test/jest/Netscript/RunScript.test.ts b/test/jest/Netscript/RunScript.test.ts
index 7e520cf7f..c4353c86e 100644
--- a/test/jest/Netscript/RunScript.test.ts
+++ b/test/jest/Netscript/RunScript.test.ts
@@ -13,9 +13,9 @@ declare const importActual: (typeof EvaluatorConfig)["doImport"];
 // Replace Blob/ObjectURL functions, because they don't work natively in Jest
 global.Blob = class extends Blob {
   code: string;
-  constructor(blobParts?: BlobPart[], options?: BlobPropertyBag) {
+  constructor(blobParts?: BlobPart[], __options?: BlobPropertyBag) {
     super();
-    this.code = (blobParts ?? [])[0] + "";
+    this.code = String((blobParts ?? [])[0]);
   }
 };
 global.URL.revokeObjectURL = function () {};
@@ -77,11 +77,11 @@ test.each([
   },
 ])("Netscript execution: $name", async function ({ expected: expectedLog, scripts }) {
   global.URL.createObjectURL = function (blob) {
-    return "data:text/javascript," + encodeURIComponent(blob.code);
+    return "data:text/javascript," + encodeURIComponent((blob as unknown as { code: string }).code);
   };
 
   let server = {} as Server;
-  let eventDelete = () => {};
+  const eventDelete = () => {};
   let alertDelete = () => {};
   try {
     const alerted = new Promise((resolve) => {
@@ -98,7 +98,7 @@ test.each([
 
     const ramUsage = script.getRamUsage(server.scripts);
     if (!ramUsage) throw new Error(`ramUsage calculated to be ${ramUsage}`);
-    const runningScript = new RunningScript(script, ramUsage as number);
+    const runningScript = new RunningScript(script, ramUsage);
     const pid = startWorkerScript(runningScript, server);
     expect(pid).toBeGreaterThan(0);
     // Manually attach an atExit to the now-created WorkerScript, so we can
@@ -107,6 +107,7 @@ test.each([
     expect(ws).toBeDefined();
     const result = await Promise.race([
       alerted,
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion -- ws was asserted above
       new Promise<void>((resolve) => (ws!.atExit = new Map([["default", resolve]]))),
     ]);
     // If an error alert was thrown, we catch it here.
diff --git a/test/jest/Netscript/Singularity.test.ts b/test/jest/Netscript/Singularity.test.ts
new file mode 100644
index 000000000..b92bb26ff
--- /dev/null
+++ b/test/jest/Netscript/Singularity.test.ts
@@ -0,0 +1,221 @@
+import { installAugmentations } from "../../../src/Augmentation/AugmentationHelpers";
+import { blackOpsArray } from "../../../src/Bladeburner/data/BlackOperations";
+import { AugmentationName } from "../../../src/Enums";
+import { WorkerScript } from "../../../src/Netscript/WorkerScript";
+import { NetscriptFunctions, type NSFull } from "../../../src/NetscriptFunctions";
+import type { ScriptFilePath } from "../../../src/Paths/ScriptFilePath";
+import { PlayerObject } from "../../../src/PersonObjects/Player/PlayerObject";
+import { Player, setPlayer } from "../../../src/Player";
+import { RunningScript } from "../../../src/Script/RunningScript";
+import { GetServerOrThrow, initForeignServers, prestigeAllServers } from "../../../src/Server/AllServers";
+import { SpecialServers } from "../../../src/Server/data/SpecialServers";
+import { initSourceFiles } from "../../../src/SourceFile/SourceFiles";
+import { FormatsNeedToChange } from "../../../src/ui/formatNumber";
+import { Router } from "../../../src/ui/GameRoot";
+
+function setupBasicTestingEnvironment(): void {
+  prestigeAllServers();
+  setPlayer(new PlayerObject());
+  Player.init();
+  Player.sourceFiles.set(4, 3);
+  initForeignServers(Player.getHomeComputer());
+}
+
+function setNumBlackOpsComplete(value: number): void {
+  if (!Player.bladeburner) {
+    throw new Error("Invalid Bladeburner data");
+  }
+  Player.bladeburner.numBlackOpsComplete = value;
+}
+
+function getNS(): NSFull {
+  const home = GetServerOrThrow(SpecialServers.Home);
+  home.maxRam = 1024;
+  const filePath = "test.js" as ScriptFilePath;
+  home.writeToScriptFile(filePath, "");
+  const script = home.scripts.get(filePath);
+  if (!script) {
+    throw new Error("Invalid script");
+  }
+  const runningScript = new RunningScript(script, 1024);
+  const workerScript = new WorkerScript(runningScript, 1, NetscriptFunctions);
+  const ns = workerScript.env.vars;
+  if (!ns) {
+    throw new Error("Invalid NS instance");
+  }
+  return ns;
+}
+
+// We need to patch this function. Some APIs call it, but it only works properly after the main UI is loaded.
+Router.toPage = () => {};
+
+/**
+ * In src\ui\formatNumber.ts, there are some variables that need to be initialized before other functions can be
+ * called. We have to call FormatsNeedToChange.emit() to initialize those variables.
+ */
+FormatsNeedToChange.emit();
+
+initSourceFiles();
+
+const nextBN = 3;
+
+describe("b1tflum3", () => {
+  beforeEach(() => {
+    setupBasicTestingEnvironment();
+    Player.queueAugmentation(AugmentationName.TheRedPill);
+    installAugmentations();
+    Player.gainHackingExp(1e100);
+    const wdServer = GetServerOrThrow(SpecialServers.WorldDaemon);
+    wdServer.hasAdminRights = true;
+  });
+  // Make sure that the player is in the next BN without SF rewards.
+  const expectSucceedInB1tflum3 = () => {
+    expect(Player.bitNodeN).toStrictEqual(nextBN);
+    expect(Player.augmentations.length).toStrictEqual(0);
+    expect(Player.sourceFileLvl(1)).toStrictEqual(0);
+  };
+
+  describe("Success", () => {
+    test("Without BN options", () => {
+      const ns = getNS();
+      ns.singularity.b1tflum3(nextBN);
+      expectSucceedInB1tflum3();
+    });
+    test("With BN options", () => {
+      const ns = getNS();
+      ns.singularity.b1tflum3(nextBN, undefined, {
+        ...ns.getResetInfo().bitNodeOptions,
+        sourceFileOverrides: new Map(),
+        intelligenceOverride: 1,
+      });
+      expectSucceedInB1tflum3();
+    });
+  });
+
+  describe("Failure", () => {
+    // Make sure that the player is still in the same BN without SF rewards.
+    const expectFailToB1tflum3 = () => {
+      expect(Player.bitNodeN).toStrictEqual(1);
+      expect(Player.augmentations.length).toStrictEqual(1);
+      expect(Player.sourceFileLvl(1)).toStrictEqual(0);
+    };
+    test("Invalid intelligenceOverride", () => {
+      const ns = getNS();
+      expect(() => {
+        ns.singularity.b1tflum3(nextBN, undefined, {
+          ...ns.getResetInfo().bitNodeOptions,
+          intelligenceOverride: -1,
+        });
+      }).toThrow();
+      expectFailToB1tflum3();
+    });
+    test("Invalid sourceFileOverrides", () => {
+      const ns = getNS();
+      expect(() => {
+        ns.singularity.b1tflum3(nextBN, undefined, {
+          ...ns.getResetInfo().bitNodeOptions,
+          sourceFileOverrides: [] as unknown as Map<number, number>,
+        });
+      }).toThrow();
+      expectFailToB1tflum3();
+    });
+  });
+});
+
+describe("destroyW0r1dD43m0n", () => {
+  beforeEach(() => {
+    setupBasicTestingEnvironment();
+    Player.queueAugmentation(AugmentationName.TheRedPill);
+    installAugmentations();
+    Player.gainHackingExp(1e100);
+    const wdServer = GetServerOrThrow(SpecialServers.WorldDaemon);
+    wdServer.hasAdminRights = true;
+    Player.startBladeburner();
+    setNumBlackOpsComplete(blackOpsArray.length);
+  });
+
+  describe("Success", () => {
+    // Make sure that the player is in the next BN and received SF rewards.
+    const expectSucceedInDestroyingWD = () => {
+      expect(Player.bitNodeN).toStrictEqual(nextBN);
+      expect(Player.augmentations.length).toStrictEqual(0);
+      expect(Player.sourceFileLvl(1)).toStrictEqual(1);
+    };
+    test("Hacking route", () => {
+      setNumBlackOpsComplete(0);
+      const ns = getNS();
+      ns.singularity.destroyW0r1dD43m0n(nextBN);
+      expectSucceedInDestroyingWD();
+    });
+    test("Hacking route with BN options", () => {
+      setNumBlackOpsComplete(0);
+      const ns = getNS();
+      ns.singularity.destroyW0r1dD43m0n(nextBN, undefined, {
+        ...ns.getResetInfo().bitNodeOptions,
+        sourceFileOverrides: new Map(),
+        intelligenceOverride: 1,
+      });
+      expectSucceedInDestroyingWD();
+    });
+    test("Bladeburner route", () => {
+      Player.skills.hacking = 0;
+      const ns = getNS();
+      ns.singularity.destroyW0r1dD43m0n(nextBN);
+      expectSucceedInDestroyingWD();
+    });
+    test("Bladeburner route with BN options", () => {
+      Player.skills.hacking = 0;
+      const ns = getNS();
+      ns.singularity.destroyW0r1dD43m0n(nextBN, undefined, {
+        ...ns.getResetInfo().bitNodeOptions,
+        sourceFileOverrides: new Map(),
+        intelligenceOverride: 1,
+      });
+      expectSucceedInDestroyingWD();
+    });
+  });
+
+  describe("Failure", () => {
+    // Make sure that the player is still in the same BN without SF rewards.
+    const expectFailToDestroyWD = () => {
+      expect(Player.bitNodeN).toStrictEqual(1);
+      expect(Player.augmentations.length).toStrictEqual(1);
+      expect(Player.sourceFileLvl(1)).toStrictEqual(0);
+    };
+    test("Do not have enough hacking level and numBlackOpsComplete", () => {
+      Player.skills.hacking = 0;
+      setNumBlackOpsComplete(0);
+      const ns = getNS();
+      ns.singularity.destroyW0r1dD43m0n(nextBN);
+      expectFailToDestroyWD();
+    });
+    test("Do not have admin rights on WD and do not have enough numBlackOpsComplete", () => {
+      const wdServer = GetServerOrThrow(SpecialServers.WorldDaemon);
+      wdServer.hasAdminRights = false;
+      setNumBlackOpsComplete(0);
+      const ns = getNS();
+      ns.singularity.destroyW0r1dD43m0n(nextBN);
+      expectFailToDestroyWD();
+    });
+    test("Invalid intelligenceOverride", () => {
+      const ns = getNS();
+      expect(() => {
+        ns.singularity.destroyW0r1dD43m0n(nextBN, undefined, {
+          ...ns.getResetInfo().bitNodeOptions,
+          intelligenceOverride: -1,
+        });
+      }).toThrow();
+      expectFailToDestroyWD();
+    });
+    test("Invalid sourceFileOverrides", () => {
+      const ns = getNS();
+      expect(() => {
+        ns.singularity.destroyW0r1dD43m0n(nextBN, undefined, {
+          ...ns.getResetInfo().bitNodeOptions,
+          sourceFileOverrides: [] as unknown as Map<number, number>,
+        });
+      }).toThrow();
+      expectFailToDestroyWD();
+    });
+  });
+});