From c9b06645de2e0ceff23272de930418fb66b870e0 Mon Sep 17 00:00:00 2001
From: Michele Locati <michele@locati.it>
Date: Tue, 13 Mar 2018 17:15:03 +0100
Subject: Start adding tests

---
 .gitattributes                                   |  2 +
 .gitignore                                       |  1 +
 .travis.yml                                      | 11 +++
 test/all-tests.sh                                | 69 +++++++++++++++++++
 test/bootstrap.sh                                | 87 ++++++++++++++++++++++++
 test/tests/empty-filter-options.fail             |  5 ++
 test/tests/filter-directory-visited-tags.success | 25 +++++++
 test/tests/get-help.success                      |  7 ++
 test/tests/invalid-filter-options.fail           |  5 ++
 test/tests/misplaced-help.fail                   |  5 ++
 10 files changed, 217 insertions(+)
 create mode 100644 .gitattributes
 create mode 100644 .gitignore
 create mode 100644 .travis.yml
 create mode 100644 test/all-tests.sh
 create mode 100644 test/bootstrap.sh
 create mode 100644 test/tests/empty-filter-options.fail
 create mode 100644 test/tests/filter-directory-visited-tags.success
 create mode 100644 test/tests/get-help.success
 create mode 100644 test/tests/invalid-filter-options.fail
 create mode 100644 test/tests/misplaced-help.fail

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..d745553
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+/.* export-ignore
+/test/ export-ignore
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..001e30f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/test/temp/
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..90cdcee
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,11 @@
+language: generic
+
+sudo: true
+
+before_script:
+  - sudo add-apt-repository ppa:git-core/ppa
+  - sudo apt update
+  - sudo apt install -y git || sudo apt upgrade -y git
+
+script:
+  - ./test/all-tests.sh
diff --git a/test/all-tests.sh b/test/all-tests.sh
new file mode 100644
index 0000000..be10e10
--- /dev/null
+++ b/test/all-tests.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+
+IS_TEST_CASE=0
+if ! . "$(cd -- "$(dirname -- "$0")" && pwd -P)/bootstrap.sh"
+then
+	echo 'Unable to find bootstrap script'>&2
+	exit 1
+fi
+
+wantedFilter=''
+if test $# -eq 1
+then
+	wantedFilter="${1}"
+else
+	wantedFilter=''
+fi
+
+someTestExecuted=0
+for testFile in "${DIR_TESTCASES}"/*
+do
+	fullTestName="$(basename "${testFile}")"
+	testName=${fullTestName%.success}
+	if test "${fullTestName}" != "${testName}"
+	then
+		should='succeed'
+	else
+		testName=${fullTestName%.fail}
+		if test "${fullTestName}" != "${testName}"
+		then
+			should='fail'
+		else
+			printf 'Unrecognized test case: %s\n', "${fullTestName}"
+			exit 1
+		fi
+	fi
+	if test -z "${wantedFilter}" -o "${testName}" = "${wantedFilter}"
+	then
+		printf '%s should %s... ' "${testName}" "${should}"
+		case "${should}" in
+			'succeed')
+				if testOutput="$(${testFile} 2>&1)"
+				then
+					printf 'ok.\n'
+				else
+					printf 'FAILED!\n'
+					printf '%s\n' "${testOutput}" >&2
+					exit 1
+				fi
+				;;
+			'fail')
+				if testOutput="$(${testFile} 2>&1)"
+				then
+					printf 'FAILED!\n'
+					printf '%s\n' "${testOutput}" >&2
+					exit 1
+				else
+					printf 'ok.\n'
+				fi
+				;;
+		esac
+		someTestExecuted=1
+	fi
+done
+
+if test ${someTestExecuted} -eq 0
+then
+	echo 'No test found!'>&2
+	exit 1
+fi
diff --git a/test/bootstrap.sh b/test/bootstrap.sh
new file mode 100644
index 0000000..831c13d
--- /dev/null
+++ b/test/bootstrap.sh
@@ -0,0 +1,87 @@
+#!/bin/sh
+
+set -o errexit
+set -o nounset
+IFS=' 	
+'
+
+if test "${IS_TEST_CASE:-1}" -eq '1'
+then
+	DIR_TESTCASES="$(cd -- "$(dirname -- "$0")" && pwd -P)"
+	DIR_TEST="$(dirname "${DIR_TESTCASES}")"
+else
+	DIR_TEST="$(cd -- "$(dirname -- "$0")" && pwd -P)"
+	DIR_TESTCASES="${DIR_TEST}/tests"
+fi
+DIR_ROOT="$(dirname "${DIR_TEST}")"
+DIR_BIN="${DIR_ROOT}/bin"
+DIR_TEMP="${DIR_TEST}/temp"
+DIR_SOURCE="${DIR_TEMP}/source"
+DIR_DESTINATION="${DIR_TEMP}/destination"
+
+BIN_MAIN="${DIR_BIN}/incremental-git-filterbranch.sh"
+if test ! -f "${BIN_MAIN}"
+then
+	echo 'Failed to detect environment'>&2
+	exit 1
+fi
+
+alias git-source='git -C "${DIR_SOURCE}"'
+alias git-destination='git -C "${DIR_DESTINATION}"'
+
+initializeRepositories () {
+	rm -rf "${DIR_TEMP}"
+	mkdir "${DIR_TEMP}"
+
+	git init --quiet "${DIR_SOURCE}"
+	git-source config --local user.email 'email@example.com'
+	git-source config --local user.name 'John Doe'
+
+	echo 'test'>"${DIR_SOURCE}/in-root"
+	git-source add --all
+	git-source commit --quiet --message 'Commit #1'
+	git-source tag tag-01
+
+	mkdir "${DIR_SOURCE}/subdir"
+	echo 'test'>"${DIR_SOURCE}/subdir/subfile"
+	git-source add --all
+	git-source commit --quiet --message 'Commit #2'
+
+	git-source tag tag-02
+
+	echo 'test'>>"${DIR_SOURCE}/in-root"
+	git-source add --all
+	git-source commit --quiet --message 'Commit #3'
+
+	git-source tag tag-03
+	
+	echo 'test'>>"${DIR_SOURCE}/in-root"
+	git-source add --all
+	git-source commit --quiet --message 'Commit #3'
+
+	git init --bare --quiet "${DIR_DESTINATION}"
+}
+
+getTagList () {
+	printf '%s\n' $(git -C "${1}" show-ref --tags | sed -E 's:^.*?refs/tags/::' || true)
+}
+
+itemInList () {
+	for itemInListItem in ${2}
+	do
+		if test "${1}" = "${itemInListItem}"
+		then
+			return 0
+		fi
+	done
+	return 1
+}
+
+itemNotInList () {
+	if itemInList "${1}" "${2}"
+	then
+		return 1
+	else
+		return 0
+	fi
+}
diff --git a/test/tests/empty-filter-options.fail b/test/tests/empty-filter-options.fail
new file mode 100644
index 0000000..59d086d
--- /dev/null
+++ b/test/tests/empty-filter-options.fail
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+. "$(cd -- "$(dirname -- "$0")" && pwd -P)/../bootstrap.sh"
+
+"${BIN_MAIN}" -- "${DIR_SOURCE}" '' "${DIR_DESTINATION}"
diff --git a/test/tests/filter-directory-visited-tags.success b/test/tests/filter-directory-visited-tags.success
new file mode 100644
index 0000000..527ee5a
--- /dev/null
+++ b/test/tests/filter-directory-visited-tags.success
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+. "$(cd -- "$(dirname -- "$0")" && pwd -P)/../bootstrap.sh"
+
+initializeRepositories
+
+"${BIN_MAIN}" "${DIR_SOURCE}" '--prune-empty --subdirectory-filter subdir' "${DIR_DESTINATION}"
+
+echo 'Fetching tags'
+tags=$(getTagList "${DIR_DESTINATION}")
+if itemInList 'tag-01' "${tags}"
+then
+	printf '%s should not be in tag list:\n%s\n' 'tag-01' "${tags}" >&2
+	exit 1
+fi
+if itemNotInList 'tag-02' "${tags}"
+then
+	printf '%s should be in tag list:\n%s\n' 'tag-02' "${tags}" >&2
+	exit 1
+fi
+if itemInList 'tag-03' "${tags}"
+then
+	printf '%s should not be in tag list:\n%s\n' 'tag-02' "${tags}" >&2
+	exit 1
+fi
diff --git a/test/tests/get-help.success b/test/tests/get-help.success
new file mode 100644
index 0000000..58036a8
--- /dev/null
+++ b/test/tests/get-help.success
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+. "$(cd -- "$(dirname -- "$0")" && pwd -P)/../bootstrap.sh"
+
+"${BIN_MAIN}" -h
+"${BIN_MAIN}" --help
+"${BIN_MAIN}" --help this is an invalid number of arguments
diff --git a/test/tests/invalid-filter-options.fail b/test/tests/invalid-filter-options.fail
new file mode 100644
index 0000000..5ee6680
--- /dev/null
+++ b/test/tests/invalid-filter-options.fail
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+. "$(cd -- "$(dirname -- "$0")" && pwd -P)/../bootstrap.sh"
+
+"${BIN_MAIN}" -- "${DIR_SOURCE}" b "${DIR_DESTINATION}"
diff --git a/test/tests/misplaced-help.fail b/test/tests/misplaced-help.fail
new file mode 100644
index 0000000..a5c2e8f
--- /dev/null
+++ b/test/tests/misplaced-help.fail
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+. "$(cd -- "$(dirname -- "$0")" && pwd -P)/../bootstrap.sh"
+
+"${BIN_MAIN}" -- --help
-- 
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