travis-ci: move Travis CI code into dedicated scripts

Most of the Travis CI commands are in the '.travis.yml'. The yml format
does not support functions and therefore code duplication is necessary
to run commands across all builds.

To fix this, add a library for common CI functions. Move all Travis CI
code into dedicated scripts and make them call the library first.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

10 files changed, 128 insertions, 81 deletions

diff --git a/.travis.yml b/.travis.yml
index 278943d14a..fead995edd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -61,23 +61,8 @@ matrix:
       services:
         - docker
       before_install:
-        - docker pull daald/ubuntu32:xenial
       before_script:
-      script:
-        - >
-          docker run
-          --interactive
-          --env DEVELOPER
-          --env DEFAULT_TEST_TARGET
-          --env GIT_PROVE_OPTS
-          --env GIT_TEST_OPTS
-          --env GIT_TEST_CLONE_2GB
-          --volume "${PWD}:/usr/src/git"
-          daald/ubuntu32:xenial
-          /usr/src/git/ci/run-linux32-build.sh $(id -u $USER)
-        # Use the following command to debug the docker build locally:
-        # $ docker run -itv "${PWD}:/usr/src/git" --entrypoint /bin/bash daald/ubuntu32:xenial
-        # root@container:/# /usr/src/git/ci/run-linux32-build.sh
+      script: ci/run-linux32-docker.sh
     - env: Static Analysis
       os: linux
       compiler:
@@ -86,9 +71,8 @@ matrix:
           packages:
           - coccinelle
       before_install:
-      script:
-        # "before_script" that builds Git is inherited from base job
-        - make coccicheck
+      # "before_script" that builds Git is inherited from base job
+      script: ci/run-static-analysis.sh
       after_failure:
     - env: Documentation
       os: linux
@@ -99,70 +83,14 @@ matrix:
           - asciidoc
           - xmlto
       before_install:
-      before_script: gem install asciidoctor
+      before_script:
       script: ci/test-documentation.sh
       after_failure:
 
-before_install:
-  - >
-    case "${TRAVIS_OS_NAME:-linux}" in
-    linux)
-      export GIT_TEST_HTTPD=YesPlease
-
-      mkdir --parents custom/p4
-      pushd custom/p4
-        wget --quiet http://filehost.perforce.com/perforce/r$LINUX_P4_VERSION/bin.linux26x86_64/p4d
-        wget --quiet http://filehost.perforce.com/perforce/r$LINUX_P4_VERSION/bin.linux26x86_64/p4
-        chmod u+x p4d
-        chmod u+x p4
-        export PATH="$(pwd):$PATH"
-      popd
-      mkdir --parents custom/git-lfs
-      pushd custom/git-lfs
-        wget --quiet https://github.com/github/git-lfs/releases/download/v$LINUX_GIT_LFS_VERSION/git-lfs-linux-amd64-$LINUX_GIT_LFS_VERSION.tar.gz
-        tar --extract --gunzip --file "git-lfs-linux-amd64-$LINUX_GIT_LFS_VERSION.tar.gz"
-        cp git-lfs-$LINUX_GIT_LFS_VERSION/git-lfs .
-        export PATH="$(pwd):$PATH"
-      popd
-      ;;
-    osx)
-      brew update --quiet
-      # Uncomment this if you want to run perf tests:
-      # brew install gnu-time
-      brew install git-lfs gettext
-      brew link --force gettext
-      brew install caskroom/cask/perforce
-      ;;
-    esac;
-    echo "$(tput setaf 6)Perforce Server Version$(tput sgr0)";
-    p4d -V | grep Rev.;
-    echo "$(tput setaf 6)Perforce Client Version$(tput sgr0)";
-    p4 -V | grep Rev.;
-    echo "$(tput setaf 6)Git-LFS Version$(tput sgr0)";
-    git-lfs version;
-
-before_script: make --jobs=2
-
-script:
-  - >
-    mkdir -p $HOME/travis-cache;
-    ln -s $HOME/travis-cache/.prove t/.prove;
-    make --quiet test;
-
-after_failure:
-  - >
-    : '<-- Click here to see detailed test output!                                                        ';
-    for TEST_EXIT in t/test-results/*.exit;
-    do
-      if [ "$(cat "$TEST_EXIT")" != "0" ];
-      then
-        TEST_OUT="${TEST_EXIT%exit}out";
-        echo "------------------------------------------------------------------------";
-        echo "$(tput setaf 1)${TEST_OUT}...$(tput sgr0)";
-        echo "------------------------------------------------------------------------";
-        cat "${TEST_OUT}";
-      fi;
-    done;
+before_install: ci/install-dependencies.sh
+before_script: ci/run-build.sh
+script: ci/run-tests.sh
+after_failure: ci/print-test-failures.sh
 
 notifications:
   email: false
diff --git a/ci/install-dependencies.sh b/ci/install-dependencies.sh
new file mode 100755
index 0000000000..067e6eb702
--- /dev/null
+++ b/ci/install-dependencies.sh
@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+#
+# Install dependencies required to build and test Git on Linux and macOS
+#
+
+. ${0%/*}/lib-travisci.sh
+
+case "${TRAVIS_OS_NAME:-linux}" in
+	linux)
+		export GIT_TEST_HTTPD=YesPlease
+
+		mkdir --parents custom/p4
+		pushd custom/p4
+			wget --quiet http://filehost.perforce.com/perforce/r$LINUX_P4_VERSION/bin.linux26x86_64/p4d
+			wget --quiet http://filehost.perforce.com/perforce/r$LINUX_P4_VERSION/bin.linux26x86_64/p4
+			chmod u+x p4d
+			chmod u+x p4
+			export PATH="$(pwd):$PATH"
+		popd
+		mkdir --parents custom/git-lfs
+		pushd custom/git-lfs
+			wget --quiet https://github.com/github/git-lfs/releases/download/v$LINUX_GIT_LFS_VERSION/git-lfs-linux-amd64-$LINUX_GIT_LFS_VERSION.tar.gz
+			tar --extract --gunzip --file "git-lfs-linux-amd64-$LINUX_GIT_LFS_VERSION.tar.gz"
+			cp git-lfs-$LINUX_GIT_LFS_VERSION/git-lfs .
+			export PATH="$(pwd):$PATH"
+		popd
+	;;
+	osx)
+		brew update --quiet
+		# Uncomment this if you want to run perf tests:
+		# brew install gnu-time
+		brew install git-lfs gettext
+		brew link --force gettext
+		brew install caskroom/cask/perforce
+	;;
+esac
+
+echo "$(tput setaf 6)Perforce Server Version$(tput sgr0)"
+p4d -V | grep Rev.
+echo "$(tput setaf 6)Perforce Client Version$(tput sgr0)"
+p4 -V | grep Rev.
+echo "$(tput setaf 6)Git-LFS Version$(tput sgr0)"
+git-lfs version
diff --git a/ci/lib-travisci.sh b/ci/lib-travisci.sh
new file mode 100755
index 0000000000..44d6ba2dd2
--- /dev/null
+++ b/ci/lib-travisci.sh
@@ -0,0 +1,5 @@
+# Library of functions shared by all CI scripts
+
+# Set 'exit on error' for all CI scripts to let the caller know that
+# something went wrong
+set -e
diff --git a/ci/print-test-failures.sh b/ci/print-test-failures.sh
new file mode 100755
index 0000000000..8583e61839
--- /dev/null
+++ b/ci/print-test-failures.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+#
+# Print output of failing tests
+#
+
+. ${0%/*}/lib-travisci.sh
+
+for TEST_EXIT in t/test-results/*.exit
+	do
+		if [ "$(cat "$TEST_EXIT")" != "0" ]
+		then
+			TEST_OUT="${TEST_EXIT%exit}out"
+			echo "------------------------------------------------------------------------"
+			echo "$(tput setaf 1)${TEST_OUT}...$(tput sgr0)"
+			echo "------------------------------------------------------------------------"
+			cat "${TEST_OUT}"
+		fi
+done
diff --git a/ci/run-build.sh b/ci/run-build.sh
new file mode 100755
index 0000000000..4f940d1032
--- /dev/null
+++ b/ci/run-build.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+#
+# Build Git
+#
+
+. ${0%/*}/lib-travisci.sh
+
+make --jobs=2
diff --git a/ci/run-linux32-docker.sh b/ci/run-linux32-docker.sh
new file mode 100755
index 0000000000..0edf63acfa
--- /dev/null
+++ b/ci/run-linux32-docker.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+#
+# Download and run Docker image to build and test 32-bit Git
+#
+
+. ${0%/*}/lib-travisci.sh
+
+docker pull daald/ubuntu32:xenial
+
+# Use the following command to debug the docker build locally:
+# $ docker run -itv "${PWD}:/usr/src/git" --entrypoint /bin/bash daald/ubuntu32:xenial
+# root@container:/# /usr/src/git/ci/run-linux32-build.sh
+
+docker run \
+	--interactive \
+	--env DEVELOPER \
+	--env DEFAULT_TEST_TARGET \
+	--env GIT_PROVE_OPTS \
+	--env GIT_TEST_OPTS \
+	--env GIT_TEST_CLONE_2GB \
+	--volume "${PWD}:/usr/src/git" \
+	daald/ubuntu32:xenial \
+	/usr/src/git/ci/run-linux32-build.sh $(id -u $USER)
diff --git a/ci/run-static-analysis.sh b/ci/run-static-analysis.sh
new file mode 100755
index 0000000000..68dd0f080e
--- /dev/null
+++ b/ci/run-static-analysis.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+#
+# Perform various static code analysis checks
+#
+
+. ${0%/*}/lib-travisci.sh
+
+make coccicheck
diff --git a/ci/run-tests.sh b/ci/run-tests.sh
new file mode 100755
index 0000000000..f0c743de94
--- /dev/null
+++ b/ci/run-tests.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+#
+# Test Git
+#
+
+. ${0%/*}/lib-travisci.sh
+
+mkdir -p $HOME/travis-cache
+ln -s $HOME/travis-cache/.prove t/.prove
+make --quiet test
diff --git a/ci/run-windows-build.sh b/ci/run-windows-build.sh
index 2d98f6b2f9..8757b3a97c 100755
--- a/ci/run-windows-build.sh
+++ b/ci/run-windows-build.sh
@@ -6,6 +6,8 @@
 # supported) and a commit hash.
 #
 
+. ${0%/*}/lib-travisci.sh
+
 test $# -ne 2 && echo "Unexpected number of parameters" && exit 1
 test -z "$GFW_CI_TOKEN" && echo "GFW_CI_TOKEN not defined" && exit
 
diff --git a/ci/test-documentation.sh b/ci/test-documentation.sh
index 6214e6acb4..7a0a848e83 100755
--- a/ci/test-documentation.sh
+++ b/ci/test-documentation.sh
@@ -3,7 +3,9 @@
 # Perform sanity checks on documentation and build it.
 #
 
-set -e
+. ${0%/*}/lib-travisci.sh
+
+gem install asciidoctor
 
 make check-builtins
 make check-docs