1 files changed, 17 insertions, 0 deletions
diff --git a/tests/runner.py b/tests/runner.py
index a1a3425a..106ea94c 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -6094,6 +6094,23 @@ def process(filename):
       '''
       self.do_run(src, 'hello, world!\ncleanup\nExit Status: 118')
 
+    def test_emconfig(self):
+      output = Popen(['python', EMCONFIG, 'LLVM_ROOT'], stdout=PIPE, stderr=PIPE).communicate()[0]
+      assert output == LLVM_ROOT + "\n"
+      invalid = 'Usage: em-config VAR_NAME\n'
+      # Don't accept variables that do not exist
+      output = Popen(['python', EMCONFIG, 'VAR_WHICH_DOES_NOT_EXIST'], stdout=PIPE, stderr=PIPE).communicate()[0]
+      assert output == invalid
+      # Don't accept no arguments
+      output = Popen(['python', EMCONFIG], stdout=PIPE, stderr=PIPE).communicate()[0]
+      assert output == invalid
+      # Don't accept more than one variable
+      output = Popen(['python', EMCONFIG, 'LLVM_ROOT', 'EMCC'], stdout=PIPE, stderr=PIPE).communicate()[0]
+      assert output == invalid
+      # Don't accept arbitrary python code
+      output = Popen(['python', EMCONFIG, 'sys.argv[1]'], stdout=PIPE, stderr=PIPE).communicate()[0]
+      assert output == invalid
+
 
   # Generate tests for everything
   def make_run(fullname, name=-1, compiler=-1, llvm_opts=0, embetter=0, quantum_size=0, typed_arrays=0, emcc_args=None):