add: abnormality test of load()

Author: higashi000

denops_std/helper/load.ts

@@ -28,6 +28,7 @@ async function ensureLocalFile(url: URL): Promise<string> {
   }
   const response = await fetch(url);
   if (response.status !== 200) {
+    await response.body?.cancel();
     throw new Error(`Failed to fetch '${url}'`);
   }
   const content = await response.arrayBuffer();

denops_std/helper/load_test.ts

@@ -1,6 +1,9 @@
-import { assertEquals, test } from "../deps_test.ts";
+import { assertEquals, assertThrowsAsync, test } from "../deps_test.ts";
 import { load } from "./load.ts";
 
+const loadScriptUrlBase =
+  "https://raw.githubusercontent.com/vim-denops/deno-denops-std/4df988237b3ea04aaa665974b44c8e7df8e237cb/denops_std/helper/";
+
 test({
   mode: "any",
   name: "load() load local Vim script file",
@@ -14,13 +17,49 @@ test({
   mode: "any",
   name: "load() load remote Vim script file",
   fn: async (denops) => {
+    const loadScriptUrl = new URL("load_test.vim", loadScriptUrlBase);
     await load(
       denops,
-      new URL(
-        "https://raw.githubusercontent.com/vim-denops/deno-denops-std/main/denops_std/helper/load_test.vim",
-        import.meta.url,
-      ),
+      loadScriptUrl,
     );
     assertEquals(await denops.eval("g:denops_std_load_test") as number, 1);
   },
 });
+
+test({
+  mode: "any",
+  name: "load() load not exists local Vim script file",
+  fn: async (denops) => {
+    await assertThrowsAsync(
+      async () => {
+        await load(
+          denops,
+          new URL("./load_test_not_exists.vim", import.meta.url),
+        );
+      },
+      undefined,
+      `Failed to call 'call' with`,
+    );
+  },
+});
+
+test({
+  mode: "any",
+  name: "load() load not exists remote Vim script file",
+  fn: async (denops) => {
+    await assertThrowsAsync(
+      async () => {
+        const loadScriptUrl = new URL(
+          "load_test_not_exists.vim",
+          loadScriptUrlBase,
+        );
+        await load(
+          denops,
+          loadScriptUrl,
+        );
+      },
+      Error,
+      "Failed to fetch",
+    );
+  },
+});