test(patch-files): verify non-blocking gates and warnings

Author: weihanglo

tests/testsuite/main.rs

@@ -134,6 +134,7 @@ mod owner;
 mod package;
 mod package_features;
 mod patch;
+mod patch_files;
 mod path;
 mod paths;
 mod pkgid;

tests/testsuite/patch_files.rs

@@ -0,0 +1,118 @@
+//! Tests for unstable `patch-files` feature.
+
+use cargo_test_support::registry::Package;
+use cargo_test_support::project;
+
+#[cargo_test]
+fn gated_manifest() {
+    Package::new("bar", "1.0.0").publish();
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                edition = "2015"
+
+                [dependencies]
+                bar = "1"
+
+                [patch.crates-io]
+                bar = { version = "=1.0.0", patches = [] }
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    p.cargo("check")
+        .with_status(101)
+        .with_stderr(
+            "\
+[WARNING] ignoring `patches` on patch for `bar` in `[..]`; see [..] about the status of this feature.
+[UPDATING] [..]
+[ERROR] failed to resolve patches for `[..]`
+
+Caused by:
+  patch for `bar` in `[..]` points to the same source, but patches must point to different sources
+",
+        )
+        .run();
+}
+
+#[cargo_test]
+fn gated_config() {
+    Package::new("bar", "1.0.0").publish();
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                edition = "2015"
+
+                [dependencies]
+                bar = "1"
+
+                [patch.crates-io]
+                bar = { version = "=1.0.0", patches = [] }
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .file(
+            ".cargo/config.toml",
+            r#"
+                [patch.crates-io]
+                bar = { version = "=1.0.0", patches = [] }
+            "#,
+        )
+        .build();
+
+    p.cargo("check")
+        .with_status(101)
+        .with_stderr(
+            "\
+[WARNING] ignoring `patches` on patch for `bar` in `[..]`; see [..] about the status of this feature.
+[WARNING] [patch] in cargo config: ignoring `patches` on patch for `bar` in `[..]`; see [..] about the status of this feature.
+[UPDATING] [..]
+[ERROR] failed to resolve patches for `[..]`
+
+Caused by:
+  patch for `bar` in `[..]` points to the same source, but patches must point to different sources
+",
+        )
+        .run();
+}
+
+#[cargo_test]
+fn warn_if_in_normal_dep() {
+    Package::new("bar", "1.0.0").publish();
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                edition = "2015"
+
+                [dependencies]
+                bar = { version = "1", patches = [] }
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    p.cargo("check")
+        .with_stderr(
+            "\
+[WARNING] unused manifest key: dependencies.bar.patches; see [..] about the status of this feature.
+[UPDATING] `dummy-registry` index
+[LOCKING] [..]
+[DOWNLOADING] crates ...
+[DOWNLOADED] bar v1.0.0 (registry `dummy-registry`)
+[CHECKING] bar v1.0.0
+[CHECKING] foo v0.0.0 ([CWD])
+[FINISHED] `dev` profile [..]
+",
+        )
+        .run();
+}