Add rust_test modules and TEST_MAPPING

* Two 'slab' tests in src and tests directory cannot
  be merged. So they have different module names.

Bug: 156009151
Test: atest --host --rebuild-module-info -c --include-subdirs external/rust/crates
Change-Id: I988a4129d9ed1ff627d98ce6dba990fbdd549262

1 files changed, 14 insertions, 0 deletions

diff --git a/TEST_MAPPING b/TEST_MAPPING
new file mode 100644
index 0000000..356d954
--- /dev/null
+++ b/TEST_MAPPING
@@ -0,0 +1,14 @@
+{
+  "presubmit": [
+    {
+      // Test name is module name because it has the crate_name suffix.
+      "name": "slab_tests_slab",
+      "host": true
+    },
+    {
+      // Default test name is module name + '_' + crate_name.
+      "name": "slab_tests_slab1_slab",
+      "host": true
+    }
+  ]
+}