Make test.cpp test driver recognize LOGTEST_testname.

Setting LOGTEST=DEBUG, when many unit/integration tests must be rebuilt and
run, can result in lots of unnecessary output. When we only want DEBUG log
output from a specific test program, make test.cpp recognize an environment
variable LOGTEST_testname, where 'testname' might be the full basename of the
executable, or part of INTEGRATION_TEST_testname or PROJECT_foo_TEST_testname.

When test.cpp notices a non-empty variable by that name, it behaves as if
LOGTEST were set to that value.

1 files changed, 26 insertions, 4 deletions

diff --git a/indra/test/test.cpp b/indra/test/test.cpp
index 61a4eb07c5..3cbac41f4a 100644
--- a/indra/test/test.cpp
+++ b/indra/test/test.cpp
@@ -35,13 +35,14 @@
  */
 
 #include "linden_common.h"
-#include "llerrorcontrol.h"
-#include "lltut.h"
 #include "chained_callback.h"
-#include "stringize.h"
-#include "namedtempfile.h"
+#include "fsyspath.h"
+#include "llerrorcontrol.h"
 #include "lltrace.h"
 #include "lltracethreadrecorder.h"
+#include "lltut.h"
+#include "namedtempfile.h"
+#include "stringize.h"
 
 #include "apr_pools.h"
 #include "apr_getopt.h"
@@ -545,6 +546,27 @@ int main(int argc, char **argv)
     // LOGTEST overrides default, but can be overridden by --debug.
     const char* LOGTEST = getenv("LOGTEST");
 
+    // Sometimes we must rebuild much of the viewer before we get to the
+    // specific test we want to monitor, and some viewer integration tests are
+    // quite verbose. In addition to noticing plain LOGTEST= (for all tests),
+    // also notice LOGTEST_progname= (for a specific test).
+    std::string basename{ fsyspath(argv[0]).stem() };
+    // don't make user set LOGTEST_INTEGRATION_TEST_progname or (worse)
+    // LOGTEST_PROJECT_foo_TEST_bar -- only LOGTEST_progname or LOGTEST_bar
+    auto _TEST_ = basename.find("_TEST_");
+    if (_TEST_ != std::string::npos)
+    {
+        basename.erase(0, _TEST_+6);
+    }
+    std::string LOGTEST_prog_key{ "LOGTEST_" + basename };
+    const char* LOGTEST_prog = getenv(LOGTEST_prog_key.c_str());
+//  std::cout << LOGTEST_prog_key << "='" << (LOGTEST_prog? LOGTEST_prog : "") << "'" << std::endl;
+    if (LOGTEST_prog && *LOGTEST_prog)
+    {
+        LOGTEST = LOGTEST_prog;
+        std::cout << "LOGTEST='" << LOGTEST << "' from " << LOGTEST_prog_key << std::endl;
+    }
+
     // values used for options parsing
     apr_status_t apr_err;
     const char* opt_arg = NULL;