Only boost-install boost_numpy when it's being built

Since recently lightweight_test introduced a sanitation to ensure that
`boost::report_errors()` is called, and it does not in module tests.

The problem could be fixed by exporting the function and calling it from
these python tests, but as it already done in other module tests I just
turned those usages lightweight_test to a regular assertation.

build/Jamfile

@@ -30,8 +30,6 @@ else
         ;
 }
 
-if [ python.configured ]
-{
 project boost/python
   : source-location ../src
   ;
@@ -123,7 +121,7 @@ lib boost_numpy
         <library>boost_python
         <python-debugging>on:<define>BOOST_DEBUG_PYTHON
         -<tag>@$(BOOST_JAMROOT_MODULE)%$(BOOST_JAMROOT_MODULE).tag
-	<tag>@$(__name__).python-tag
+        <tag>@$(__name__).python-tag
         <conditional>@python.require-py
 
     :   # default build
@@ -142,8 +140,16 @@ lib boost_numpy
 # `install` installs the two libraries and their dependencies and is similar
 #   to issuing `b2 --with-python install` from top level
 
-boost-install boost_python boost_numpy ;
-
+if [ python.configured ]
+{
+    if [ python.numpy ]
+    {
+        boost-install boost_python boost_numpy ;
+    }
+    else
+    {
+        boost-install boost_python ;
+    }
 }
 else
 {

test/test_class.hpp

@@ -4,17 +4,17 @@
 // http://www.boost.org/LICENSE_1_0.txt)
 #ifndef TEST_CLASS_DWA2002326_HPP
 # define TEST_CLASS_DWA2002326_HPP
-# include <boost/detail/lightweight_test.hpp>
+# include <boost/assert.hpp>
 
 template <int n = 0>
 struct test_class
 {
     explicit test_class(int x) : x(x), magic(7654321 + n) { ++counter; }
     test_class(test_class const& rhs) : x(rhs.x), magic(7654321 + n) { ++counter; }
-    virtual ~test_class() { BOOST_TEST(magic == 7654321 + n); magic = 6666666; x = 9999; --counter; }
+    virtual ~test_class() { BOOST_ASSERT(magic == 7654321 + n); magic = 6666666; x = 9999; --counter; }
 
-    void set(int _x) { BOOST_TEST(magic == 7654321 + n); this->x = _x; }
-    int value() const { BOOST_TEST(magic == 7654321 + n); return x; }
+    void set(int _x) { BOOST_ASSERT(magic == 7654321 + n); this->x = _x; }
+    int value() const { BOOST_ASSERT(magic == 7654321 + n); return x; }
     operator int() const { return x; }
     static int count() { return counter; }