llvm.eclass: Add initial tests

Signed-off-by: Michał Górny <mgorny@gentoo.org>

diff --git a/eclass/tests/llvm.sh b/eclass/tests/llvm.sh
new file mode 100755 (executable)
index 0000000..bb8d5fc
--- /dev/null
+++ b/eclass/tests/llvm.sh
@@ -0,0 +1,138 @@
+#!/bin/bash
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+source tests-common.sh
+
+inherit llvm
+
+# llvm_check_deps override to disable has_version use.
+# in: ${LLVM_SLOT}
+# returns 0 if installed (i.e. == LLVM_INSTALLED_SLOT), 1 otherwise
+llvm_check_deps() {
+       [[ ${LLVM_SLOT} == ${LLVM_INSTALLED_SLOT} ]]
+}
+
+# check_prefix <expected> [<args>...]
+# Check output of `get_llvm_prefix <args>...`.
+check_prefix() {
+       local expected=${1}
+       shift
+
+       tbegin "get_llvm_prefix ${*}; inst=${LLVM_INSTALLED_SLOT} -> ${expected}"
+       prefix=$(get_llvm_prefix "${@}")
+       [[ ${prefix} == ${expected} ]] ||
+               eerror "got: ${prefix} != exp: ${expected}"
+       tend ${?}
+}
+
+# check_setup_path <expected>
+# Check PATH after pkg_setup.
+check_setup_path() {
+       local expected=${1}
+       shift
+
+       tbegin "pkg_setup; max=${LLVM_MAX_SLOT}; inst=${LLVM_INSTALLED_SLOT} -> PATH=${expected}"
+       path=$(llvm_pkg_setup; echo "${PATH}")
+       [[ ${path} == ${expected} ]] ||
+               eerror "got: ${path} != exp: ${expected}"
+       tend ${?}
+}
+
+
+EAPI=7
+BROOT=/broot
+SYSROOT=/sysroot
+ESYSROOT=/sysroot/eprefix
+ROOT=/root
+EROOT=/root/eprefix
+
+ebegin "Testing check_setup_path without max slot"
+eindent
+       LLVM_INSTALLED_SLOT=11 \
+       check_prefix /sysroot/eprefix/usr/lib/llvm/11
+       LLVM_INSTALLED_SLOT=10 \
+       check_prefix /sysroot/eprefix/usr/lib/llvm/10
+eoutdent
+
+ebegin "Testing check_setup_path with max slot"
+eindent
+       LLVM_INSTALLED_SLOT=1* \
+       check_prefix /sysroot/eprefix/usr/lib/llvm/11 11
+       LLVM_INSTALLED_SLOT=1* \
+       check_prefix /sysroot/eprefix/usr/lib/llvm/10 10
+       LLVM_INSTALLED_SLOT=10 \
+       check_prefix /sysroot/eprefix/usr/lib/llvm/10 11
+eoutdent
+
+ebegin "Testing check_setup_path option switches"
+eindent
+       LLVM_INSTALLED_SLOT=11 \
+       check_prefix /broot/usr/lib/llvm/11 -b
+       LLVM_INSTALLED_SLOT=11 \
+       check_prefix /sysroot/eprefix/usr/lib/llvm/11 -d
+eoutdent
+
+ebegin "Testing check_setup_path EAPI 6 API"
+eindent
+       EAPI=6 \
+       LLVM_INSTALLED_SLOT=11 \
+       check_prefix /usr/lib/llvm/11 -d
+eoutdent
+
+BASEPATH=/usr/lib/ccache/bin:/usr/bin:/usr/sbin:/bin:/sbin
+
+# TODO: cross support?
+ESYSROOT=
+
+ebegin "Testing pkg_setup with all installed LLVM versions in PATH"
+eindent
+       LLVM_MAX_SLOT=11 \
+       LLVM_INSTALLED_SLOT=1* \
+       PATH=${BASEPATH}:/usr/lib/llvm/11/bin \
+       check_setup_path "/usr/lib/llvm/11/bin:${BASEPATH}:/usr/lib/llvm/11/bin"
+
+       LLVM_MAX_SLOT=10 \
+       LLVM_INSTALLED_SLOT=1* \
+       PATH=${BASEPATH}:/usr/lib/llvm/11/bin:/usr/lib/llvm/10/bin \
+       check_setup_path "/usr/lib/llvm/10/bin:${BASEPATH}:/usr/lib/llvm/11/bin:/usr/lib/llvm/10/bin"
+
+       LLVM_MAX_SLOT=11 \
+       LLVM_INSTALLED_SLOT=10 \
+       PATH=${BASEPATH}:/usr/lib/llvm/10/bin \
+       check_setup_path "/usr/lib/llvm/10/bin:${BASEPATH}:/usr/lib/llvm/10/bin"
+eoutdent
+
+ebegin "Testing pkg_setup with the other LLVM version in PATH"
+eindent
+       LLVM_MAX_SLOT=11 \
+       LLVM_INSTALLED_SLOT=1* \
+       PATH=${BASEPATH}:/usr/lib/llvm/10/bin \
+       check_setup_path "/usr/lib/llvm/11/bin:${BASEPATH}:/usr/lib/llvm/10/bin"
+
+       LLVM_MAX_SLOT=10 \
+       LLVM_INSTALLED_SLOT=1* \
+       PATH=${BASEPATH}:/usr/lib/llvm/11/bin \
+       check_setup_path "/usr/lib/llvm/10/bin:${BASEPATH}:/usr/lib/llvm/11/bin"
+eoutdent
+
+ebegin "Testing pkg_setup with LLVM missing from PATH"
+eindent
+       LLVM_MAX_SLOT=11 \
+       LLVM_INSTALLED_SLOT=1* \
+       PATH=${BASEPATH} \
+       check_setup_path "/usr/lib/llvm/11/bin:${BASEPATH}"
+
+       LLVM_MAX_SLOT=10 \
+       LLVM_INSTALLED_SLOT=1* \
+       PATH=${BASEPATH} \
+       check_setup_path "/usr/lib/llvm/10/bin:${BASEPATH}"
+
+       LLVM_MAX_SLOT=11 \
+       LLVM_INSTALLED_SLOT=10 \
+       PATH=${BASEPATH} \
+       check_setup_path "/usr/lib/llvm/10/bin:${BASEPATH}"
+eoutdent
+
+texit