test: tighten plugin install path warning coverage

src/infra/plugin-install-path-warnings.test.ts

@@ -8,6 +8,25 @@ import {
 } from "./plugin-install-path-warnings.js";
 
 describe("plugin install path warnings", () => {
+  it("ignores non-path installs and blank path candidates", async () => {
+    expect(
+      await detectPluginInstallPathIssue({
+        pluginId: "matrix",
+        install: null,
+      }),
+    ).toBeNull();
+    expect(
+      await detectPluginInstallPathIssue({
+        pluginId: "matrix",
+        install: {
+          source: "npm",
+          sourcePath: " ",
+          installPath: " ",
+        },
+      }),
+    ).toBeNull();
+  });
+
   it("detects stale custom plugin install paths", async () => {
     const issue = await detectPluginInstallPathIssue({
       pluginId: "matrix",
@@ -37,6 +56,28 @@ describe("plugin install path warnings", () => {
     ]);
   });
 
+  it("uses the second candidate path when the first one is stale", async () => {
+    await withTempHome(async (home) => {
+      const pluginPath = path.join(home, "matrix-plugin");
+      await fs.mkdir(pluginPath, { recursive: true });
+
+      const issue = await detectPluginInstallPathIssue({
+        pluginId: "matrix",
+        install: {
+          source: "path",
+          sourcePath: "/tmp/openclaw-matrix-missing",
+          installPath: pluginPath,
+        },
+      });
+
+      expect(issue).toEqual({
+        kind: "custom-path",
+        pluginId: "matrix",
+        path: pluginPath,
+      });
+    });
+  });
+
   it("detects active custom plugin install paths", async () => {
     await withTempHome(async (home) => {
       const pluginPath = path.join(home, "matrix-plugin");
@@ -58,4 +99,25 @@ describe("plugin install path warnings", () => {
       });
     });
   });
+
+  it("applies custom command formatting in warning messages", () => {
+    expect(
+      formatPluginInstallPathIssue({
+        issue: {
+          kind: "custom-path",
+          pluginId: "matrix",
+          path: "/tmp/matrix-plugin",
+        },
+        pluginLabel: "Matrix",
+        defaultInstallCommand: "openclaw plugins install @openclaw/matrix",
+        repoInstallCommand: "openclaw plugins install ./extensions/matrix",
+        formatCommand: (command) => `<${command}>`,
+      }),
+    ).toEqual([
+      "Matrix is installed from a custom path: /tmp/matrix-plugin",
+      "Main updates will not automatically replace that plugin with the repo's default Matrix package.",
+      'Reinstall with "<openclaw plugins install @openclaw/matrix>" when you want to return to the standard Matrix plugin.',
+      'If you are intentionally running from a repo checkout, reinstall that checkout explicitly with "<openclaw plugins install ./extensions/matrix>" after updates.',
+    ]);
+  });
 });