Add tests for minor version upgrade enforcement.

Test: compiles
Test: add folder test/versioning/2.0 will make update-makefiles.sh to
fail.
Test: removing @2.3::IBar will let update-makefiles.sh to pass.
Test: Change @2.3::IBar to extend from @2.2::IFoo will let
update-makefiles.sh to fail.

Bug: 28825532
Change-Id: Iad1138b784505c903ab1049f08f6c07c38b777e1
diff --git a/tests/versioning/2.3/Android.bp b/tests/versioning/2.3/Android.bp
new file mode 100644
index 0000000..1489539
--- /dev/null
+++ b/tests/versioning/2.3/Android.bp
@@ -0,0 +1,68 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+
+filegroup {
+    name: "android.hardware.tests.versioning@2.3_hal",
+    srcs: [
+        "IBar.hal",
+        "IFoo.hal",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@2.3_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.3",
+    srcs: [
+        "IBar.hal",
+        "IFoo.hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/2.3/BarAll.cpp",
+        "android/hardware/tests/versioning/2.3/FooAll.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.versioning@2.3_genc++_headers",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.versioning@2.3",
+    srcs: [
+        "IBar.hal",
+        "IFoo.hal",
+    ],
+    out: [
+        "android/hardware/tests/versioning/2.3/IBar.h",
+        "android/hardware/tests/versioning/2.3/IHwBar.h",
+        "android/hardware/tests/versioning/2.3/BnHwBar.h",
+        "android/hardware/tests/versioning/2.3/BpHwBar.h",
+        "android/hardware/tests/versioning/2.3/BsBar.h",
+        "android/hardware/tests/versioning/2.3/IFoo.h",
+        "android/hardware/tests/versioning/2.3/IHwFoo.h",
+        "android/hardware/tests/versioning/2.3/BnHwFoo.h",
+        "android/hardware/tests/versioning/2.3/BpHwFoo.h",
+        "android/hardware/tests/versioning/2.3/BsFoo.h",
+    ],
+}
+
+cc_library_shared {
+    name: "android.hardware.tests.versioning@2.3",
+    generated_sources: ["android.hardware.tests.versioning@2.3_genc++"],
+    generated_headers: ["android.hardware.tests.versioning@2.3_genc++_headers"],
+    export_generated_headers: ["android.hardware.tests.versioning@2.3_genc++_headers"],
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+        "libcutils",
+        "android.hardware.tests.versioning@2.2",
+    ],
+    export_shared_lib_headers: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "android.hardware.tests.versioning@2.2",
+    ],
+}