[DOC] Add test script starter command to document (#3993)

diff --git a/docs/install/from_source.rst b/docs/install/from_source.rst
index f56174a..852a23f 100644 (file)
--- a/docs/install/from_source.rst
+++ b/docs/install/from_source.rst
@@ -227,4 +227,4 @@ tests in TVM. The easiest way to install GTest is from source.
        make install
 
 
-After installing GTest, the C++ tests can be built with ``make cpptest``.
+After installing GTest, the C++ tests can be built and started with ``./tests/scripts/task_cpp_unittest.sh`` or just built with ``make cpptest``.