Update travis test coverage: 2.7, 3.4, 3.7, pypy2.7 (#1614)

* Use xenial dist for travis builds
* Use openjdk8 for all travis tests
* Update python build matrix -- add 3.7, drop 3.5/3.6 (keep 2.7, 3.4, pypy2.7)

6 files changed, 40 insertions, 11 deletions

diff --git a/.travis.yml b/.travis.yml
index fd6018b..cdb9339 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,12 @@
 language: python
 
+dist: xenial
+
 python:
     - 2.7
     - 3.4
-    - 3.5
-    - 3.6
-    - pypy
+    - 3.7
+    - pypy2.7-6.0
 
 env:
     - KAFKA_VERSION=0.8.2.2
@@ -18,6 +19,7 @@ addons:
   apt:
     packages:
       - libsnappy-dev
+      - openjdk-8-jdk
 
 cache:
   directories:
@@ -25,6 +27,7 @@ cache:
     - servers/
 
 before_install:
+    - source travis_java_install.sh
     - ./build_integration.sh
 
 install:
@@ -32,7 +35,7 @@ install:
     - pip install .
 
 script:
-  - tox -e `if [ "$TRAVIS_PYTHON_VERSION" == "pypy" ]; then echo pypy; else echo py${TRAVIS_PYTHON_VERSION/./}; fi`
+  - tox -e `if [ "$TRAVIS_PYTHON_VERSION" == "pypy2.7-6.0" ]; then echo pypy; else echo py${TRAVIS_PYTHON_VERSION/./}; fi`
 
 after_success:
   - coveralls
diff --git a/Makefile b/Makefile
index 7dfd305..b4dcbff 100644
--- a/Makefile
+++ b/Makefile
@@ -14,8 +14,8 @@ servers/$(KAFKA_VERSION)/kafka-bin:
 build-integration: servers/$(KAFKA_VERSION)/kafka-bin
 
 # Test and produce coverage using tox. This is the same as is run on Travis
-test36: build-integration
-	KAFKA_VERSION=$(KAFKA_VERSION) SCALA_VERSION=$(SCALA_VERSION) tox -e py36 -- $(FLAGS)
+test37: build-integration
+	KAFKA_VERSION=$(KAFKA_VERSION) SCALA_VERSION=$(SCALA_VERSION) tox -e py37 -- $(FLAGS)
 
 test27: build-integration
 	KAFKA_VERSION=$(KAFKA_VERSION) SCALA_VERSION=$(SCALA_VERSION) tox -e py27 -- $(FLAGS)
@@ -56,4 +56,4 @@ doc:
 	make -C docs html
 	@echo "open file://`pwd`/docs/_build/html/index.html"
 
-.PHONY: all test36 test27 test-local cov-local clean doc
+.PHONY: all test37 test27 test-local cov-local clean doc
diff --git a/docs/compatibility.rst b/docs/compatibility.rst
index 85b2c59..ce222ee 100644
--- a/docs/compatibility.rst
+++ b/docs/compatibility.rst
@@ -12,6 +12,6 @@ through 0.8.0 . kafka-python is not compatible with the 0.8.2-beta release.
 Because the kafka server protocol is backwards compatible, kafka-python is
 expected to work with newer broker releases as well (2.0+).
 
-kafka-python is tested on python 2.7, 3.4, 3.5, 3.6 and pypy.
+kafka-python is tested on python 2.7, 3.4, 3.5, 3.6, 3.7, and pypy.
 
 Builds and tests via Travis-CI.  See https://travis-ci.org/dpkp/kafka-python
diff --git a/setup.py b/setup.py
index 9dcdb8e..779adb9 100644
--- a/setup.py
+++ b/setup.py
@@ -57,6 +57,7 @@ setup(
         "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: Implementation :: PyPy",
         "Topic :: Software Development :: Libraries :: Python Modules",
     ]
diff --git a/tox.ini b/tox.ini
index 1da88f3..48a143e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py{26,27,34,35,36,py}, docs
+envlist = py{26,27,34,35,36,37,py}, docs
 
 [pytest]
 testpaths = kafka test
@@ -11,8 +11,8 @@ log_format = %(created)f %(filename)-23s %(threadName)s %(message)s
 deps =
     pytest<4.0
     pytest-cov
-    py{27,34,35,36,py}: pylint
-    py{27,34,35,36,py}: pytest-pylint
+    py{27,34,35,36,37,py}: pylint
+    py{27,34,35,36,37,py}: pytest-pylint
     pytest-mock
     mock
     python-snappy
diff --git a/travis_java_install.sh b/travis_java_install.sh
new file mode 100644
index 0000000..f662ce2
--- /dev/null
+++ b/travis_java_install.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+# borrowed from: https://github.com/mansenfranzen/pywrangler/blob/master/tests/travis_java_install.sh
+
+# Kafka requires Java 8 in order to work properly. However, TravisCI's Ubuntu
+# 16.04 ships with Java 11 and Java can't be set with `jdk` when python is
+# selected as language. Ubuntu 14.04 does not work due to missing python 3.7
+# support on TravisCI which does have Java 8 as default.
+
+# show current JAVA_HOME and java version
+echo "Current JAVA_HOME: $JAVA_HOME"
+echo "Current java -version:"
+which java
+java -version
+
+echo "Updating JAVA_HOME"
+# change JAVA_HOME to Java 8
+export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-amd64
+
+echo "Updating PATH"
+export PATH=${PATH/\/usr\/local\/lib\/jvm\/openjdk11\/bin/$JAVA_HOME\/bin}
+
+echo "New java -version"
+which java
+java -version