From e88220ac0db71556f8cd7e6df774a34615a02e24 Mon Sep 17 00:00:00 2001
From: Milly <milly.ca@gmail.com>
Date: Tue, 17 Sep 2024 20:58:30 +0900
Subject: [PATCH] :herb: add tests for `denops#interrupt()`

---
 .../functions/denops/interrupt_test.ts        | 86 +++++++++++++++++++
 .../denops/testdata/dummy_interrupt_plugin.ts | 17 ++++
 2 files changed, 103 insertions(+)
 create mode 100644 tests/denops/runtime/functions/denops/interrupt_test.ts
 create mode 100644 tests/denops/testdata/dummy_interrupt_plugin.ts

diff --git a/tests/denops/runtime/functions/denops/interrupt_test.ts b/tests/denops/runtime/functions/denops/interrupt_test.ts
new file mode 100644
index 00000000..c0dd2bb0
--- /dev/null
+++ b/tests/denops/runtime/functions/denops/interrupt_test.ts
@@ -0,0 +1,86 @@
+import { assert, assertEquals } from "jsr:@std/assert@^1.0.1";
+import { resolveTestDataPath } from "/denops-testdata/resolve.ts";
+import { testHost } from "/denops-testutil/host.ts";
+import { wait } from "/denops-testutil/wait.ts";
+
+const scriptInterrupt = resolveTestDataPath("dummy_interrupt_plugin.ts");
+
+testHost({
+  name: "denops#interrupt()",
+  mode: "all",
+  postlude: [
+    "let g:__test_denops_events = []",
+    "autocmd User DenopsPlugin* call add(g:__test_denops_events, expand('<amatch>'))",
+    "autocmd User DummyInterruptPlugin:* call add(g:__test_denops_events, expand('<amatch>'))",
+    "runtime plugin/denops.vim",
+    // NOTE: Disable startup on VimEnter.
+    "autocmd! denops_plugin_internal_startup VimEnter",
+  ],
+  fn: async ({ host, t }) => {
+    await t.step("if the server is not yet running", async (t) => {
+      await t.step("returns immediately", async () => {
+        await host.call("denops#interrupt");
+      });
+    });
+
+    // Start the server and wait.
+    await host.call("denops#server#start");
+    await wait(() => host.call("eval", "denops#server#status() ==# 'running'"));
+
+    await t.step("if the plugin is not yet loaded", async (t) => {
+      await t.step("returns immediately", async () => {
+        await host.call("denops#interrupt");
+      });
+    });
+
+    await t.step("if the plugin is loaded", async (t) => {
+      // Load plugin and wait.
+      await host.call("execute", [
+        "let g:__test_denops_events = []",
+        `call denops#plugin#load('dummy', '${scriptInterrupt}')`,
+      ], "");
+      await wait(async () =>
+        (await host.call("eval", "g:__test_denops_events") as string[])
+          .includes("DenopsPluginPost:dummy")
+      );
+      await host.call("execute", [
+        "let g:__test_denops_events = []",
+      ], "");
+
+      await t.step("returns immediately", async () => {
+        await host.call("denops#interrupt");
+      });
+
+      await t.step("sends signal to the plugin", async () => {
+        await wait(() => host.call("eval", "len(g:__test_denops_events)"));
+        const events = await host.call(
+          "eval",
+          "g:__test_denops_events",
+        ) as string[];
+        assert(
+          events.some((event) =>
+            event.startsWith("DummyInterruptPlugin:Interrupted:")
+          ),
+          `Expected event 'DummyInterruptPlugin:Interrupted:*', but: ${
+            JSON.stringify(events)
+          }`,
+        );
+      });
+
+      await host.call("denops#request", "dummy", "reset", []);
+
+      await t.step("sends signal to the plugin with reason", async () => {
+        await host.call("execute", [
+          "let g:__test_denops_events = []",
+        ], "");
+
+        await host.call("denops#interrupt", "test");
+
+        await wait(() => host.call("eval", "len(g:__test_denops_events)"));
+        assertEquals(await host.call("eval", "g:__test_denops_events"), [
+          "DummyInterruptPlugin:Interrupted:test",
+        ]);
+      });
+    });
+  },
+});
diff --git a/tests/denops/testdata/dummy_interrupt_plugin.ts b/tests/denops/testdata/dummy_interrupt_plugin.ts
new file mode 100644
index 00000000..afacda80
--- /dev/null
+++ b/tests/denops/testdata/dummy_interrupt_plugin.ts
@@ -0,0 +1,17 @@
+import type { Entrypoint } from "jsr:@denops/core@^7.0.0";
+
+export const main: Entrypoint = (denops) => {
+  function reset(): void {
+    const signal = denops.interrupted;
+    signal?.addEventListener("abort", async () => {
+      await denops.cmd(
+        `doautocmd <nomodeline> User DummyInterruptPlugin:Interrupted:${signal.reason}`,
+      );
+    }, { once: true });
+  }
+  reset();
+
+  denops.dispatcher = {
+    reset,
+  };
+};