From 1c5bd21ebcdcb86b640af41c31d9d049d7493411 Mon Sep 17 00:00:00 2001
From: Jack Wright <56345+ayax79@users.noreply.github.com>
Date: Sat, 6 Apr 2024 13:11:41 -0700
Subject: [PATCH] Added let command to PluginTest (#12431)

# Description
The `let` command is needed for many example tests. This pull request
adds the `let` command to the EngineState of Test Plugin.

cc: @devyn

# User-Facing Changes
No user changes. Plugin tests can now have examples with the let
keyword.

Co-authored-by: Jack Wright <jack.wright@disqo.com>
---
 Cargo.lock                                       | 1 +
 crates/nu-plugin-test-support/Cargo.toml         | 1 +
 crates/nu-plugin-test-support/src/plugin_test.rs | 2 ++
 3 files changed, 4 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index 86e8435683..c0bc746f0e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3060,6 +3060,7 @@ name = "nu-plugin-test-support"
 version = "0.92.2"
 dependencies = [
  "nu-ansi-term",
+ "nu-cmd-lang",
  "nu-engine",
  "nu-parser",
  "nu-plugin",
diff --git a/crates/nu-plugin-test-support/Cargo.toml b/crates/nu-plugin-test-support/Cargo.toml
index 53159d66e3..a0af1629f7 100644
--- a/crates/nu-plugin-test-support/Cargo.toml
+++ b/crates/nu-plugin-test-support/Cargo.toml
@@ -13,6 +13,7 @@ nu-engine = { path = "../nu-engine", version = "0.92.2", features = ["plugin"] }
 nu-protocol = { path = "../nu-protocol", version = "0.92.2", features = ["plugin"] }
 nu-parser = { path = "../nu-parser", version = "0.92.2", features = ["plugin"] }
 nu-plugin = { path = "../nu-plugin", version = "0.92.2" }
+nu-cmd-lang = { path = "../nu-cmd-lang", version = "0.92.2" }
 nu-ansi-term = { workspace = true }
 similar = "2.4"
 
diff --git a/crates/nu-plugin-test-support/src/plugin_test.rs b/crates/nu-plugin-test-support/src/plugin_test.rs
index 42cec9990e..af4a52f4e5 100644
--- a/crates/nu-plugin-test-support/src/plugin_test.rs
+++ b/crates/nu-plugin-test-support/src/plugin_test.rs
@@ -1,6 +1,7 @@
 use std::{cmp::Ordering, convert::Infallible, sync::Arc};
 
 use nu_ansi_term::Style;
+use nu_cmd_lang::Let;
 use nu_engine::eval_block;
 use nu_parser::parse;
 use nu_plugin::{Plugin, PluginCommand, PluginCustomValue, PluginSource};
@@ -38,6 +39,7 @@ impl PluginTest {
     ) -> Result<PluginTest, ShellError> {
         let mut engine_state = EngineState::new();
         let mut working_set = StateWorkingSet::new(&engine_state);
+        working_set.add_decl(Box::new(Let));
 
         let reg_plugin = fake_register(&mut working_set, name, plugin)?;
         let source = Arc::new(PluginSource::new(reg_plugin));