graphics/py-pytesseract: Bump PORTREVISION, add test

Bump PORTREVISION to pull in py-pillow requisite, missed in 2b87ac2.

Add TEST_DEPENDS and do-test for "make test" support (requires py-tox).

graphics/py-pytesseract/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	pytesseract
 PORTVERSION=	0.3.7
+PORTREVISION=	1
 CATEGORIES=	graphics python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -10,13 +11,17 @@ COMMENT=	wrapper for Google's Tesseract OCR engine
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-BUILD_DEPENDS=	${RUN_DEPENDS}
 RUN_DEPENDS=	tesseract:graphics/tesseract \
 		${PYTHON_PKGNAMEPREFIX}pillow>0:graphics/py-pillow@${PY_FLAVOR}
+TEST_DEPENDS=	tesseract:graphics/tesseract \
+		${PYTHON_PKGNAMEPREFIX}tox>0:devel/py-tox@${PY_FLAVOR}
 
 USES=		localbase python:3.4+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
+do-test:
+		cd ${WRKSRC} && ${SETENV} ${TEST_ENV} tox
+
 .include <bsd.port.mk>