3 files changed, 14 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 09967ea..4afb030 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ clean:
         rm -rf *.o
 
 test: debugcube.o
-        CUBETYPE=${CUBETYPE} ./test/test.sh
+        CUBETYPE=${CUBETYPE} TEST=${TEST} ./test/test.sh
 
 benchmark: cube.o
         CUBETYPE=${CUBETYPE} ./benchmark/bench.sh
diff --git a/README.md b/README.md
index d829af4..383b50c 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,14 @@ Then
 $ make test
 ```
 
-to run the tests. You can also run
+to run the tests. You can also run only the tests that match a chosen
+regex, for example:
+
+```
+$ TEST=coord make test
+```
+
+You can also run
 
 ```
 $ make benchmark
diff --git a/test/test.sh b/test/test.sh
index 1ee972d..a018401 100755
--- a/test/test.sh
+++ b/test/test.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+re="${TEST:-$@}"
+
 CC="cc -DDEBUG -std=c99 -pthread -pedantic -Wall -Wextra \
     -Wno-unused-parameter -Wno-unused-function -g3 -D$CUBETYPE"
 if [ "$CUBETYPE" = "CUBE_AVX2" ]; then
@@ -15,6 +17,9 @@ TESTERR="test/last.err"
 CUBEOBJ="debugcube.o"
 
 for t in test/*; do
+        if [ -n "$re" ] && [ -z "$(echo "$t" | grep "$re")" ]; then
+                continue
+        fi
         if [ ! -d $t ]; then continue; fi
         $CC -o $TESTBIN $t/*.c $CUBEOBJ || exit 1;
         for cin in $t/*.in; do