diff --git a/extensions/mattermost/src/mattermost/model-picker.test.ts b/extensions/mattermost/src/mattermost/model-picker.test.ts
index c3c37e94dcc..1c489947a76 100644
--- a/extensions/mattermost/src/mattermost/model-picker.test.ts
+++ b/extensions/mattermost/src/mattermost/model-picker.test.ts
@@ -112,7 +112,7 @@ describe("Mattermost model picker", () => {
     });
 
     const ids = modelsView.buttons.flat().map((button) => button.id);
-    expect(ids.filter((id) => typeof id !== "string" || !/^[a-z0-9]+$/.test(id))).toEqual([]);
+    expect(ids.every((id) => typeof id === "string" && /^[a-z0-9]+$/.test(id))).toBe(true);
     expect(new Set(ids).size).toBe(ids.length);
   });
 
diff --git a/extensions/nvidia/index.test.ts b/extensions/nvidia/index.test.ts
index 6d73f429115..75a49b465f4 100644
--- a/extensions/nvidia/index.test.ts
+++ b/extensions/nvidia/index.test.ts
@@ -129,7 +129,7 @@ describe("nvidia provider hooks", () => {
       "minimaxai/minimax-m2.5",
       "z-ai/glm5",
     ]);
-    expect(entries?.filter((entry) => entry.provider !== "nvidia")).toEqual([]);
+    expect(entries?.every((entry) => entry.provider === "nvidia")).toBe(true);
   });
 
   it("opts into literal provider-prefix preservation", async () => {
diff --git a/test/plugin-npm-runtime-build.test.ts b/test/plugin-npm-runtime-build.test.ts
index e154b0ee2ea..637a18abe40 100644
--- a/test/plugin-npm-runtime-build.test.ts
+++ b/test/plugin-npm-runtime-build.test.ts
@@ -10,7 +10,7 @@ const repoRoot = path.resolve(import.meta.dirname, "..");
 type PluginNpmRuntimeBuildPlan = NonNullable<ReturnType<typeof resolvePluginNpmRuntimeBuildPlan>>;
 
 function expectDistRelativePaths(paths: string[]) {
-  expect(paths.filter((entry) => !entry.startsWith("./dist/"))).toEqual([]);
+  expect(paths.every((entry) => entry.startsWith("./dist/"))).toBe(true);
 }
 
 function expectPluginNpmRuntimeBuildPlan(
diff --git a/test/scripts/plugin-prerelease-test-plan.test.ts b/test/scripts/plugin-prerelease-test-plan.test.ts
index 62d826f9459..6261ce3198b 100644
--- a/test/scripts/plugin-prerelease-test-plan.test.ts
+++ b/test/scripts/plugin-prerelease-test-plan.test.ts
@@ -71,7 +71,7 @@ describe("scripts/lib/plugin-prerelease-test-plan.mjs", () => {
     const plan = createPluginPrereleaseTestPlan();
 
     expect(plan.dockerLanes).not.toContain("openai-web-search-minimal");
-    expect(plan.dockerLanes.filter((lane) => lane.startsWith("live-"))).toEqual([]);
+    expect(plan.dockerLanes.some((lane) => lane.startsWith("live-"))).toBe(false);
     expect(plan.staticChecks).toContainEqual({
       check: "live-ish-availability",
       checkName: "checks-plugin-prerelease-live-ish-availability",