🌿 Skip tests for <script> mapping in old Vim/Neovim

Author: lambdalisue

denops_std/mapping/mod.ts

@@ -58,6 +58,10 @@ export type ReadOptions = {
 
 /**
  * Read a mapping and return a `Mapping` instance.
+ *
+ * Note that prior to Vim 8.2.0491 or Neovim 0.5.0, `script` is
+ * not detectable by `maparg` function internally used in this
+ * function.
  */
 export async function read(
   denops: Denops,

denops_std/mapping/mod_test.ts

@@ -1,3 +1,4 @@
+import { Denops } from "../deps.ts";
 import { assertEquals, assertThrowsAsync, test } from "../deps_test.ts";
 import { Mapping, Mode } from "./types.ts";
 import * as mapping from "./mod.ts";
@@ -69,6 +70,10 @@ test({
   mode: "all",
   name: `map() registers mapping (script)`,
   fn: async (denops) => {
+    if (!await isScriptSupported(denops)) {
+      console.warn("Skip");
+      return;
+    }
     await mapping.map(denops, "<Plug>(test-denops-std)", "Hello", {
       script: true,
     });
@@ -276,6 +281,10 @@ test({
   mode: "all",
   name: `read() returns mapping (script)`,
   fn: async (denops) => {
+    if (!await isScriptSupported(denops)) {
+      console.warn("Skip");
+      return;
+    }
     await denops.cmd(`map <script> <Plug>(test-denops-std) Hello`);
     assertEquals(
       {
@@ -398,3 +407,11 @@ for (const mode of modes) {
     },
   });
 }
+
+async function isScriptSupported(denops: Denops): Promise<boolean> {
+  if (denops.meta.host === "vim") {
+    return !!await denops.call("has", "patch-8.2.0491");
+  } else {
+    return !!await denops.call("has", "nvim-0.5.0");
+  }
+}