Introduce @rules_testing for Starlark tests (#2480)

This is a follow-up PR of
https://github.com/bazelbuild/rules_rust/pull/2422.

I'm scoping it to a separate PR to introduce
[@rules_testing](https://github.com/bazelbuild/rules_testing) (a new
Starlark testing framework). The framework removes a lot of boilerplate
code (unncessarily) required when writing analysis tests.

6 files changed, 78 insertions, 0 deletions

diff --git a/WORKSPACE.bazel b/WORKSPACE.bazel
index b520a3c3..d32161aa 100644
--- a/WORKSPACE.bazel
+++ b/WORKSPACE.bazel
@@ -76,3 +76,10 @@ http_archive(
 #
 # load("@bazelci_rules//:rbe_repo.bzl", "rbe_preconfig")
 # rbe_preconfig(name = "buildkite_config", toolchain = "ubuntu2004-bazel-java11")
+
+http_archive(
+    name = "rules_testing",
+    sha256 = "b84ed8546f1969d700ead4546de9f7637e0f058d835e47e865dcbb13c4210aed",
+    strip_prefix = "rules_testing-0.5.0",
+    url = "https://github.com/bazelbuild/rules_testing/releases/download/v0.5.0/rules_testing-v0.5.0.tar.gz",
+)
diff --git a/test/bindgen/BUILD.bazel b/test/bindgen/BUILD.bazel
new file mode 100644
index 00000000..c0263d2a
--- /dev/null
+++ b/test/bindgen/BUILD.bazel
@@ -0,0 +1,3 @@
+load(":bindgen_test.bzl", "bindgen_test_suite")
+
+bindgen_test_suite(name = "cc_bindgen_test_suite")
diff --git a/test/bindgen/bindgen_test.bzl b/test/bindgen/bindgen_test.bzl
new file mode 100644
index 00000000..a5adf5df
--- /dev/null
+++ b/test/bindgen/bindgen_test.bzl
@@ -0,0 +1,53 @@
+"""Analysis test for for rust_bindgen_library rule."""
+
+load("@rules_cc//cc:defs.bzl", "cc_library")
+load("@rules_rust//bindgen:defs.bzl", "rust_bindgen_library")
+load("@rules_rust//rust:defs.bzl", "rust_binary")
+load("@rules_testing//lib:analysis_test.bzl", "analysis_test", "test_suite")
+
+def _test_cc_linkopt_impl(env, target):
+    # Assert
+    env.expect.that_action(target.actions[0]) \
+        .contains_at_least_args(["--codegen=link-arg=-shared"])
+
+def _test_cc_linkopt(name):
+    # Arrange
+    cc_library(
+        name = name + "_cc",
+        srcs = ["simple.cc"],
+        hdrs = ["simple.h"],
+        linkopts = ["-shared"],
+        tags = ["manual"],
+    )
+    rust_bindgen_library(
+        name = name + "_rust_bindgen",
+        cc_lib = name + "_cc",
+        header = "simple.h",
+        tags = ["manual"],
+        edition = "2021",
+    )
+    rust_binary(
+        name = name + "_rust_binary",
+        srcs = ["main.rs"],
+        deps = [name + "_rust_bindgen"],
+        tags = ["manual"],
+        edition = "2021",
+    )
+
+    # Act
+    # TODO: Use targets attr to also verify `rust_bindgen_library` not having
+    # the linkopt after https://github.com/bazelbuild/rules_testing/issues/67
+    # is released
+    analysis_test(
+        name = name,
+        target = name + "_rust_binary",
+        impl = _test_cc_linkopt_impl,
+    )
+
+def bindgen_test_suite(name):
+    test_suite(
+        name = name,
+        tests = [
+            _test_cc_linkopt,
+        ],
+    )
diff --git a/test/bindgen/main.rs b/test/bindgen/main.rs
new file mode 100644
index 00000000..c5a415d2
--- /dev/null
+++ b/test/bindgen/main.rs
@@ -0,0 +1,7 @@
+// Analysis test shouldn't need this file.
+// This is a workaround until
+// https://github.com/bazelbuild/rules_rust/issues/2499
+// is fixed
+fn main() {
+    println!("Hello world");
+}
diff --git a/test/bindgen/simple.cc b/test/bindgen/simple.cc
new file mode 100644
index 00000000..1cd12d51
--- /dev/null
+++ b/test/bindgen/simple.cc
@@ -0,0 +1,4 @@
+// Analysis test shouldn't need this file.
+// This is a workaround until
+// https://github.com/bazelbuild/rules_rust/issues/2499
+// is fixed
diff --git a/test/bindgen/simple.h b/test/bindgen/simple.h
new file mode 100644
index 00000000..1cd12d51
--- /dev/null
+++ b/test/bindgen/simple.h
@@ -0,0 +1,4 @@
+// Analysis test shouldn't need this file.
+// This is a workaround until
+// https://github.com/bazelbuild/rules_rust/issues/2499
+// is fixed