From 5d117bae2b3404a7061b714f837a47e8d521111d Mon Sep 17 00:00:00 2001
From: Martin Pool <mbp@sourcefrog.net>
Date: Sun, 5 Jan 2025 09:14:45 -0800
Subject: [PATCH] Test for #428

---
 .../.cargo_test/config.toml                   |  2 ++
 testdata/alternate_registry/Cargo_test.toml   |  7 ++++++
 testdata/alternate_registry/README.md         |  5 +++++
 testdata/alternate_registry/src/main.rs       |  1 +
 tests/list.rs                                 | 22 +++++++++++++++++++
 ...st__list_mutants_in_all_trees_as_json.snap |  7 ++++++
 ...st__list_mutants_in_all_trees_as_text.snap |  6 +++++
 7 files changed, 50 insertions(+)
 create mode 100644 testdata/alternate_registry/.cargo_test/config.toml
 create mode 100644 testdata/alternate_registry/Cargo_test.toml
 create mode 100644 testdata/alternate_registry/README.md
 create mode 100644 testdata/alternate_registry/src/main.rs

diff --git a/testdata/alternate_registry/.cargo_test/config.toml b/testdata/alternate_registry/.cargo_test/config.toml
new file mode 100644
index 00000000..99fb90c5
--- /dev/null
+++ b/testdata/alternate_registry/.cargo_test/config.toml
@@ -0,0 +1,2 @@
+[registries]
+my-registry = { index = "https://crates.io/" }
diff --git a/testdata/alternate_registry/Cargo_test.toml b/testdata/alternate_registry/Cargo_test.toml
new file mode 100644
index 00000000..71b0dc3e
--- /dev/null
+++ b/testdata/alternate_registry/Cargo_test.toml
@@ -0,0 +1,7 @@
+[package]
+name = "cargo-mutants-testdata-alternate-registry"
+publish = false
+edition = "2021"
+
+[dependencies]
+mutants = { version = "1", registry = "my-registry" }
diff --git a/testdata/alternate_registry/README.md b/testdata/alternate_registry/README.md
new file mode 100644
index 00000000..6b719c7b
--- /dev/null
+++ b/testdata/alternate_registry/README.md
@@ -0,0 +1,5 @@
+# `alternate_registry`
+
+<https://github.com/sourcefrog/cargo-mutants/issues/428>
+
+This tree has Cargo configured to read from an alternative registry to crates.io.
diff --git a/testdata/alternate_registry/src/main.rs b/testdata/alternate_registry/src/main.rs
new file mode 100644
index 00000000..f328e4d9
--- /dev/null
+++ b/testdata/alternate_registry/src/main.rs
@@ -0,0 +1 @@
+fn main() {}
diff --git a/tests/list.rs b/tests/list.rs
index 35d82a77..aec6aa8d 100644
--- a/tests/list.rs
+++ b/tests/list.rs
@@ -330,3 +330,25 @@ fn no_mutants_in_tree_everything_skipped() {
         .stdout(predicate::str::is_empty())
         .success();
 }
+
+#[test]
+fn list_mutants_with_alternate_registry() {
+    // For https://github.com/sourcefrog/cargo-mutants/issues/428
+
+    // This tree has a non-default registry that ends up just pointing back to crates.io, but under another name.
+    //
+    // Without running cargo metadata properly this will fail.
+    //
+    // The tree doesn't actually generate any mutants.
+    //
+    // To reproduce the failure it's important that we *don't* run from the tree's directory.
+    let tmp = copy_of_testdata("alternate_registry");
+    run()
+        .arg("mutants")
+        .arg("--list")
+        .arg("--dir")
+        .arg(tmp.path())
+        .assert()
+        .stdout("")
+        .success();
+}
diff --git a/tests/snapshots/list__list_mutants_in_all_trees_as_json.snap b/tests/snapshots/list__list_mutants_in_all_trees_as_json.snap
index c4dc2034..c0aac58e 100644
--- a/tests/snapshots/list__list_mutants_in_all_trees_as_json.snap
+++ b/tests/snapshots/list__list_mutants_in_all_trees_as_json.snap
@@ -1,6 +1,7 @@
 ---
 source: tests/list.rs
 expression: buf
+snapshot_kind: text
 ---
 ## testdata/already_failing_doctests
 
@@ -293,6 +294,12 @@ expression: buf
 ]
 ```
 
+## testdata/alternate_registry
+
+```json
+[]
+```
+
 ## testdata/cdylib
 
 ```json
diff --git a/tests/snapshots/list__list_mutants_in_all_trees_as_text.snap b/tests/snapshots/list__list_mutants_in_all_trees_as_text.snap
index 152cb695..b66d933f 100644
--- a/tests/snapshots/list__list_mutants_in_all_trees_as_text.snap
+++ b/tests/snapshots/list__list_mutants_in_all_trees_as_text.snap
@@ -1,6 +1,7 @@
 ---
 source: tests/list.rs
 expression: buf
+snapshot_kind: text
 ---
 ## testdata/already_failing_doctests
 
@@ -26,6 +27,11 @@ src/lib.rs:4:11: replace *= with /= in factorial
 src/lib.rs:12:5: replace infinite_loop with ()
 ```
 
+## testdata/alternate_registry
+
+```
+```
+
 ## testdata/cdylib
 
 ```