Workaround to ensure compatibility with older CMake

Travis uses Ubuntu Precise, which has CMake 3.8. That version does not
have support for excluding /usr and /usr/bin from the %files% list
(which results in a package that conflicts with the filesystem package
and fails to install).

This commit:

+ Builds on Precise instead of Trusty
+ Adds install tests

Dockerfile

@@ -1,5 +1,5 @@
-FROM ubuntu
+FROM ubuntu:precise
 
 RUN apt-get update \
- && apt-get install --no-install-recommends --yes build-essential git gdb valgrind cmake rpm \
+ && apt-get install --no-install-recommends --yes build-essential git gdb valgrind cmake rpm python3 \
  && rm -rf /var/lib/apt/lists/*

ci/run_build.sh

@@ -7,6 +7,11 @@ set -o nounset
 : ${DIST_DIR:="${SOURCE_DIR}/dist"}
 : ${BUILD_DIR:="/tmp/build"}
 
+# Set path to prioritize our utils
+export REAL_PATH="${PATH}"
+export PATH="${SOURCE_DIR}/ci/util:${PATH}"
+echo "PATH IS: $PATH"
+
 # Build
 cmake -B"${BUILD_DIR}" -H"${SOURCE_DIR}"
 

ci/util/rpmbuild

@@ -0,0 +1,21 @@
+#!/bin/bash
+# Wrapper for rpm build that first removes files that should be in there
+# We need this for compatibility with CMake <= 2.8.10 (which is the only version we have in Travis)
+# See: http://www.cmake.org/pipermail/cmake-commits/2013-April/014818.html
+set -o nounset
+set -o errexit
+set -o pipefail
+
+# Remove PATH hack so we can find the real rpmbuild
+export PATH="${REAL_PATH}"
+
+echo "Using local rpmbuild"
+
+specFile="${!#}"  # Last argument
+
+for removeLine in '"/usr"' '"/usr/bin"'; do
+  sed -i "s|${removeLine}||g" "${specFile}"
+done
+
+# Passthrough to rpmbuild
+exec rpmbuild "${@}"

ddist.sh

@@ -8,6 +8,9 @@ HERE=$(cd "${REL_HERE}"; pwd)
 IMG="tini"
 SRC="/tini"
 
+# Cleanup the build dir
+rm -f "${HERE}/dist"/*
+
 # Create the build image
 docker build -t "${IMG}" .
 

test/test.py

@@ -61,36 +61,50 @@ if __name__ == "__main__":
 
     root = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
 
+    base_cmd = [
+        "docker",
+        "run",
+        "--rm",
+        "--volume={0}:/tini".format(root),
+        "--name={0}".format(name),
+    ]
+
+    fail_cmd = ["docker", "kill", name]
+
+
+    # Funtional tests
     for entrypoint in ["/tini/dist/tini"]:
-        base_cmd = [
-            "docker",
-            "run",
-            "--rm",
-            "--volume={0}:/tini".format(root),
-            "--name={0}".format(name),
+        functional_base_cmd = base_cmd + [
             "--entrypoint={0}".format(entrypoint),
             img,
             "-vvvv",
         ]
 
-        fail_cmd = ["docker", "kill", name]
-
         # Reaping test
-        Command(base_cmd + ["/tini/test/reaping/stage_1.py"], fail_cmd).run(timeout=10)
+        Command(functional_base_cmd + ["/tini/test/reaping/stage_1.py"], fail_cmd).run(timeout=10)
 
         # Signals test
         for sig, retcode in [("INT", 1), ("TERM", 143)]:
             Command(
-                base_cmd + ["--", "/tini/test/signals/test.py"],
+                functional_base_cmd + ["--", "/tini/test/signals/test.py"],
                 fail_cmd,
                 ["docker", "kill", "-s", sig, name],
                 2
             ).run(timeout=10, retcode=retcode)
 
         # Exit code test
-        Command(base_cmd + ["-z"], fail_cmd).run(retcode=1)
-        Command(base_cmd + ["--", "zzzz"], fail_cmd).run(retcode=1)
-        Command(base_cmd + ["-h"], fail_cmd).run(retcode=0)
+        Command(functional_base_cmd + ["-z"], fail_cmd).run(retcode=1)
+        Command(functional_base_cmd + ["--", "zzzz"], fail_cmd).run(retcode=1)
+        Command(functional_base_cmd + ["-h"], fail_cmd).run()
 
         # Valgrind test
-        Command(base_cmd + ["--", "valgrind", "--leak-check=full", "--error-exitcode=1", entrypoint, "-v", "--", "ls"], fail_cmd).run()
+        Command(functional_base_cmd + ["--", "valgrind", "--leak-check=full", "--error-exitcode=1", entrypoint, "-v", "--", "ls"], fail_cmd).run()
+
+    # Install tests (sh -c is used for globbing and &&)
+    for image, pkg_manager, extension in [
+            ["ubuntu:precise", "dpkg", "deb"],
+            ["ubuntu:trusty", "dpkg", "deb"],
+            ["centos:6", "rpm", "rpm"],
+            ["centos:7", "rpm", "rpm"],
+    ]:
+        Command(base_cmd + [image, "sh", "-c", "{0} -i /tini/dist/*.{1} && /usr/bin/tini true".format(pkg_manager, extension)], fail_cmd).run()