Make x test tests work

Author: clubby789

src/bootstrap/src/core/build_steps/test.rs

@@ -1327,6 +1327,55 @@ macro_rules! coverage_test_alias {
     };
 }
 
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
+pub struct Tests {
+    pub compiler: Compiler,
+    pub target: TargetSelection,
+}
+
+impl Step for Tests {
+    type Output = ();
+    const DEFAULT: bool = false;
+    const ONLY_HOSTS: bool = false;
+    fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
+        run.suite_path("tests")
+    }
+
+    fn make_run(run: RunConfig<'_>) {
+        let compiler = run.builder.compiler(run.builder.top_stage, run.build_triple());
+        run.builder.ensure(Tests { compiler, target: run.target });
+    }
+
+    fn run(self, builder: &Builder<'_>) {
+        let Self { compiler, target } = self;
+        // This should be kept in sync with all tests in tests/*
+        // Alphabetical order so this list (somewhat) matches a file listing
+        // tidy-alphabetical-start
+        builder.ensure(Assembly { compiler, target });
+        builder.ensure(Codegen { compiler, target });
+        builder.ensure(CodegenUnits { compiler, target });
+        builder.ensure(Coverage { compiler, target });
+        builder.ensure(CoverageRunRustdoc { compiler, target });
+        builder.ensure(Debuginfo { compiler, target });
+        builder.ensure(Incremental { compiler, target });
+        builder.ensure(MirOpt { compiler, target });
+        builder.ensure(Pretty { compiler, target });
+        builder.ensure(RunMake { compiler, target });
+        builder.ensure(RunMakeFullDeps { compiler, target });
+        builder.ensure(RunPassValgrind { compiler, target });
+        builder.ensure(Rustdoc { compiler, target });
+        builder.ensure(RustdocGUI { compiler, target });
+        builder.ensure(RustdocJSNotStd { compiler, target });
+        builder.ensure(RustdocJson { compiler, target });
+        builder.ensure(RustdocJSStd { target });
+        builder.ensure(RustdocUi { compiler, target });
+        builder.ensure(TestHelpers { target });
+        builder.ensure(Ui { compiler, target });
+        builder.ensure(UiFullDeps { compiler, target });
+        // tidy-alphabetical-end
+    }
+}
+
 default_test!(Ui { path: "tests/ui", mode: "ui", suite: "ui" });
 
 default_test!(RunPassValgrind {

src/bootstrap/src/core/builder.rs

@@ -736,6 +736,7 @@ impl<'a> Builder<'a> {
             ),
             Kind::Test => describe!(
                 crate::core::build_steps::toolstate::ToolStateCheck,
+                test::Tests,
                 test::ExpandYamlAnchors,
                 test::Tidy,
                 test::Ui,