[travis] test parent selection rules (#4423)

This commit has five scenarios to test the four Mesh Impacting
Criteria and one Child Impacting Criterion (version).

script/test

@@ -37,19 +37,35 @@ readonly SYSTEM_TRIPLET="$(third_party/nlbuild-autotools/repo/third_party/autoco
 export top_builddir="build/${SYSTEM_TRIPLET}"
 
 do_build() {
-    if [[ -n "${RADIO_DEVICE}" && "${VIRTUAL_TIME}" = 1 ]]; then
-        VIRTUAL_TIME_UART=1 make -f examples/Makefile-posix
-    else
-        make -f examples/Makefile-posix
+    ./bootstrap
+    if [ "${VIRTUAL_TIME}" = 1 ]; then
+        OPTIONS="VIRTUAL_TIME_UART=1"
     fi
 
+    make -f examples/Makefile-posix ${OPTIONS}
+
     if [[ -n "${RADIO_DEVICE}" ]]; then
         make -f src/posix/Makefile-posix
     fi
+
+    # Extra 1.1 build for 1.2 env
+    if [ "${THREAD_VERSION}" = "1.2" ]; then
+        ./bootstrap
+        OPTIONS="TargetTuple=${SYSTEM_TRIPLET}-1.1 THREAD_VERSION=1.1 ${OPTIONS}"
+        make -f examples/Makefile-posix ${OPTIONS}
+
+        if [[ -n "${RADIO_DEVICE}" ]]; then
+            make -f src/posix/Makefile-posix
+        fi
+    fi
 }
 
 do_clean() {
     rm -rfv "build/${SYSTEM_TRIPLET}" "build/posix/${SYSTEM_TRIPLET}"
+    # Extra 1.1 clean for 1.2 env
+    if [ "${THREAD_VERSION}" = "1.2" ]; then
+        rm -rfv "build/${SYSTEM_TRIPLET}-1.1" "build/posix/${SYSTEM_TRIPLET}-1.1"
+    fi
 }
 
 do_cert() {
@@ -57,13 +73,6 @@ do_cert() {
     PYTHONUNBUFFERED=1 "$1"
 }
 
-do_v1_2() {
-    ls tests/scripts/thread-cert/v1_2_*.py | while read test_case; do
-        [[ ! -d tmp ]] || rm -rvf tmp
-        PYTHONUNBUFFERED=1 "${test_case}"
-    done
-}
-
 print_usage() {
     echo "USAGE: [ENVIRONMENTS] $0 COMMANDS
 
@@ -71,6 +80,7 @@ ENVIRONMENTS:
     NODE_TYPE       'sim' for CLI, 'ncp-sim' for NCP. The default is 'sim'.
     NODE_MODE       'transceiver' for transceiver mode, otherwise for standalone mode. The default is standalone mode.
     VIRTUAL_TIME    1 for virtual time, otherwise real time. The default is 1
+    THREAD_VERSION  1.1 for Thread 1.1 stack, 1.2 for Thread 1.2 stack. The default is 1.1.
 
 COMMANDS:
     clean           Clean built files to prepare for new build.
@@ -94,7 +104,11 @@ EXAMPLES:
     # Test CLI with real time
     VIRTUAL_TIME=0 $0 clean build cert tests/scripts/thread-cert/Cert_5_1_01_RouterAttach.py
     VIRTUAL_TIME=0 $0 cert tests/scripts/thread-cert/Cert_5_1_02_ChildAddressTimeout.py
-"
+
+    # Test Thread 1.2 with real time
+    THREAD_VERSION=1.2 VIRTUAL_TIME=0 $0 clean build cert tests/scripts/thread-cert/v1_2_router_5_1_1.py
+    THREAD_VERSION=1.2 VIRTUAL_TIME=0 $0 clean build cert tests/scripts/thread-cert/v1_2_test_parent_selection.py
+    "
 
     exit $1
 }
@@ -104,11 +118,21 @@ main()
     export NODE_TYPE="${NODE_TYPE:-sim}"
     export VERBOSE="${VERBOSE:-1}"
     export VIRTUAL_TIME="${VIRTUAL_TIME:-1}"
+    export THREAD_VERSION="${THREAD_VERSION:-1.1}"
+    if [ "${THREAD_VERSION}" = "1.2" ]; then
+        export top_builddir_1_1="build/${SYSTEM_TRIPLET}-1.1"
+    fi
 
     if [[ "${NODE_MODE}" = 'transceiver' ]] ; then
         export RADIO_DEVICE="build/${SYSTEM_TRIPLET}/examples/apps/ncp/ot-rcp"
         export OT_CLI_PATH="build/posix/${SYSTEM_TRIPLET}/src/posix/ot-cli"
         export OT_NCP_PATH="build/posix/${SYSTEM_TRIPLET}/src/posix/ot-ncp"
+
+        if [ "${THREAD_VERSION}" = "1.2" ]; then
+            export RADIO_DEVICE_1_1="build/${SYSTEM_TRIPLET}-1.1/examples/apps/ncp/ot-rcp"
+            export OT_CLI_PATH_1_1="build/posix/${SYSTEM_TRIPLET}-1.1/src/posix/ot-cli"
+            export OT_NCP_PATH_1_1="build/posix/${SYSTEM_TRIPLET}-1.1/src/posix/ot-ncp"
+        fi
     fi
 
     if [[ -z "$1" ]]; then
@@ -118,6 +142,7 @@ main()
     [[ -n "${RADIO_DEVICE}" ]] && echo "Using transceiver mode" || echo "Using standalone mode"
     [[ "${NODE_TYPE}" = "ncp-sim" ]] && echo "Using NCP node" || echo "Using CLI node"
     [[ "${VIRTUAL_TIME}" = 1 ]] && echo "Using virtual time" || echo "Using real time"
+    [[ "${THREAD_VERSION}" = "1.2" ]] && echo "Using Thread 1.2 stack" || echo "Using Thread 1.1 stack"
 
     while [[ -n "$1" ]]; do
         case "$1" in
@@ -131,10 +156,6 @@ main()
                 shift
                 do_cert "$1"
                 ;;
-            v1.2)
-                do_v1_2
-                break
-                ;;
             help)
                 print_usage
                 ;;