test: rmeta is not reused

Author: weihanglo

tests/testsuite/freshness.rs

@@ -3184,3 +3184,55 @@ fn use_mtime_cache_in_cargo_home() {
 "#]])
         .run();
 }
+
+#[cargo_test]
+fn rmeta_reuse() {
+    // Currently support only one direction `build` -> `check`/`doc`
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                edition = "2015"
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    p.cargo("build")
+        .with_stderr_data(str![[r#"
+[COMPILING] foo v0.0.0 ([ROOT]/foo)
+[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s
+
+"#]])
+        .run();
+
+    p.cargo("check --verbose")
+        .with_stderr_data(str![[r#"
+[CHECKING] foo v0.0.0 ([ROOT]/foo)
+[RUNNING] `rustc [..]`
+[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s
+
+"#]])
+        .run();
+
+    p.cargo("clean").run();
+
+    p.cargo("check")
+        .with_stderr_data(str![[r#"
+[CHECKING] foo v0.0.0 ([ROOT]/foo)
+[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s
+
+"#]])
+        .run();
+
+    p.cargo("build --verbose")
+        .with_stderr_data(str![[r#"
+[COMPILING] foo v0.0.0 ([ROOT]/foo)
+[RUNNING] `rustc [..]`
+[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s
+
+"#]])
+        .run();
+}