test(update): Verify --workspace behavior

Looks like `--workspace` and `-p <workspace-member>` behave differently.

tests/testsuite/update.rs

@@ -1190,3 +1190,91 @@ rustdns.workspace = true
  ))
  .run();
 }
+
+#[cargo_test]
+fn update_only_members_with_workspace() {
+ let git_project = git::new("rustdns", |project| {
+ project
+ .file("Cargo.toml", &basic_lib_manifest("rustdns"))
+ .file("src/lib.rs", "pub fn bar() {}")
+ });
+
+ let workspace_toml = format!(
+ r#"
+[workspace.package]
+version = "2.29.8"
+edition = "2021"
+publish = false
+
+[workspace]
+members = [
+ "crate2",
+ "crate1",
+]
+resolver = "2"
+
+[workspace.dependencies]
+# Internal crates
+crate1 = {{ version = "*", path = "./crate1" }}
+
+# External dependencies
+rustdns = {{ version = "0.5.0", default-features = false, git = "{}" }}
+ "#,
+ git_project.url()
+ );
+ let p = project()
+ .file("Cargo.toml", &workspace_toml)
+ .file(
+ "crate2/Cargo.toml",
+ r#"
+[package]
+name = "crate2"
+version.workspace = true
+edition.workspace = true
+publish.workspace = true
+
+[dependencies]
+crate1.workspace = true
+"#,
+ )
+ .file("crate2/src/main.rs", "fn main() {}")
+ .file(
+ "crate1/Cargo.toml",
+ r#"
+[package]
+name = "crate1"
+version.workspace = true
+edition.workspace = true
+publish.workspace = true
+
+[dependencies]
+rustdns.workspace = true
+"#,
+ )
+ .file("crate1/src/lib.rs", "pub foo() {}")
+ .build();
+
+ // First time around we should compile both foo and bar
+ p.cargo("generate-lockfile")
+ .with_stderr(&format!(
+ "[UPDATING] git repository `{}`\n",
+ git_project.url(),
+ ))
+ .run();
+ // Modify a file manually, shouldn't trigger a recompile
+ git_project.change_file("src/lib.rs", r#"pub fn bar() { println!("hello!"); }"#);
+ // Commit the changes and make sure we don't trigger a recompile because the
+ // lock file says not to change
+ let repo = git2::Repository::open(&git_project.root()).unwrap();
+ git::add(&repo);
+ git::commit(&repo);
+ p.change_file("Cargo.toml", &workspace_toml.replace("2.29.8", "2.29.81"));
+
+ p.cargo("update --workspace")
+ .with_stderr(
+ "\
+[UPDATING] crate1 v2.29.8 ([CWD]/crate1) -> v2.29.81
+[UPDATING] crate2 v2.29.8 ([CWD]/crate2) -> v2.29.81",
+ )
+ .run();
+}