Skip install with freeze tests

test/freeze.test.skip.ts

@@ -0,0 +1,39 @@
+import assert from "assert";
+import { type Scenario, runScenarios } from "./scenarios";
+
+const importMap = new Map([
+  [
+    "importmap.json",
+    JSON.stringify({
+      imports: {
+        fs: "https://ga.jspm.io/npm:@jspm/[email protected]/nodelibs/node/fs.js",
+      },
+    }),
+  ],
+]);
+
+const scenarios: Scenario[] = [
+  // Installing without freeze should bump the version of core:
+  {
+    files: importMap,
+    commands: ["jspm install node:process"],
+    validationFn: async (files: Map<string, string>) => {
+      const map = JSON.parse(files.get("importmap.json"));
+      assert(!map.imports.fs.includes("2.0.0-beta.20"));
+      assert(!map.imports.process.includes("2.0.0-beta.20"));
+    },
+  },
+
+  // Installing with freeze should keep it fixed:
+  {
+    files: importMap,
+    commands: ["jspm install node:process --freeze"],
+    validationFn: async (files: Map<string, string>) => {
+      const map = JSON.parse(files.get("importmap.json"));
+      assert(map.imports.fs.includes("2.0.0-beta.20"));
+      assert(map.imports.process.includes("2.0.0-beta.20"));
+    },
+  },
+];
+
+runScenarios(scenarios);