feat(bluetooth): Initial nRF52 BSIM based test support.

.github/workflows/ble-test.yml

@@ -0,0 +1,78 @@
+name: BLE Tests
+
+on:
+  push:
+    paths:
+      - ".github/workflows/ble-test.yml"
+      - "app/tests/ble/**"
+      - "app/src/**"
+      - "app/run-ble-test.sh"
+  pull_request:
+    paths:
+      - ".github/workflows/ble-test.yml"
+      - "app/tests/ble/**"
+      - "app/src/**"
+      - "app/run-ble-test.sh"
+
+jobs:
+  collect-tests:
+    outputs:
+      test-dirs: ${{ steps.test-dirs.outputs.test-dirs }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Find test directories
+        id: test-dirs
+        run: |
+          cd app/tests/ble
+          export TESTS=$(ls -d * | grep -v central | jq -R -s -c 'split("\n")[:-1]')
+          echo "::set-output name=test-dirs::${TESTS}"
+  run-tests:
+    needs: collect-tests
+    strategy:
+      matrix:
+        test: ${{ fromJSON(needs.collect-tests.outputs.test-dirs) }}
+    runs-on: ubuntu-latest
+    container:
+      image: docker.io/zmkfirmware/zmk-build-arm:3.2
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Cache west modules
+        uses: actions/[email protected]
+        env:
+          cache-name: cache-zephyr-modules
+        with:
+          path: |
+            modules/
+            tools/
+            zephyr/
+            bootloader/
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('app/west.yml') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-
+            ${{ runner.os }}-build-
+            ${{ runner.os }}-
+        timeout-minutes: 2
+        continue-on-error: true
+      - name: Initialize workspace (west init)
+        run: west init -l app
+      - name: Enable babblesim group filter
+        run: west config manifest.group-filter -- +babblesim
+      - name: Update modules (west update)
+        run: west update
+      - name: Export Zephyr CMake package (west zephyr-export)
+        run: west zephyr-export
+      - name: Build BabbleSim components
+        working-directory: tools/bsim
+        run: make everything
+      - name: Test ${{ matrix.test }}
+        working-directory: app
+        run: BSIM_COMPONENTS_PATH="${GITHUB_WORKSPACE}/tools/bsim/components/" BSIM_OUT_PATH="${GITHUB_WORKSPACE}/tools/bsim/" ./run-ble-test.sh tests/ble/${{ matrix.test }}
+      - name: Archive artifacts
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: "log-files"
+          path: app/build/**/*.log

.github/workflows/test.yml

@@ -24,7 +24,7 @@ jobs:
         id: test-dirs
         run: |
           cd app/tests/
-          export TESTS=$(ls -d * | jq -R -s -c 'split("\n")[:-1]')
+          export TESTS=$(ls -d * | grep -v ble | jq -R -s -c 'split("\n")[:-1]')
           echo "::set-output name=test-dirs::${TESTS}"
   run-tests:
     needs: collect-tests

app/boards/native_posix_64.overlay

@@ -4,6 +4,7 @@
 
 / {
     chosen {
+        zephyr,console = &uart0;
         zmk,kscan = &kscan;
     };
 
@@ -15,4 +16,13 @@
         columns = <2>;
         exit-after;
     };
+
+    uart0: uart {
+        status = "okay";
+        compatible = "zephyr,native-posix-uart";
+        /* Dummy current-speed entry to comply with serial
+         * DTS binding
+         */
+        current-speed = <0>;
+    };
 };

app/boards/nrf52_bsim.conf

@@ -0,0 +1,4 @@
+CONFIG_ZMK_BLE=y
+CONFIG_LOG=y
+CONFIG_LOG_BACKEND_SHOW_COLOR=n
+CONFIG_ZMK_LOG_LEVEL_DBG=y

app/boards/nrf52_bsim.overlay

@@ -0,0 +1,17 @@
+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/keys.h>
+#include <dt-bindings/zmk/kscan_mock.h>
+
+/ {
+    chosen {
+        zmk,kscan = &kscan;
+    };
+
+    kscan: kscan {
+        compatible = "zmk,kscan-mock";
+        label = "KSCAN_MOCK";
+
+        rows = <2>;
+        columns = <2>;
+    };
+};

app/run-ble-test.sh

@@ -0,0 +1,96 @@
+#!/bin/bash
+
+# Copyright (c) 2023 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+if [ -z "$1" ]; then
+    echo "Usage: ./run-ble-test.sh <path to testcase>"
+    exit 1
+fi
+
+path="$1"
+if [ $path = "all" ]; then
+    path="tests"
+fi
+
+if [ -z "$BLE_TESTS_NO_CENTRAL_BUILD" ]; then
+    if ! [ -e build/tests/ble/central ]; then
+        west build -d build/tests/ble/central -b nrf52_bsim tests/ble/central > /dev/null 2>&1
+    else
+        west build -d build/tests/ble/central
+    fi
+
+    cp build/tests/ble/central/zephyr/zephyr.exe "${BSIM_OUT_PATH}/bin/ble_test_central.exe"
+
+    if ! [ -e build/tests/ble/private_central ]; then
+        west build -d build/tests/ble/private_central -b nrf52_bsim tests/ble/central -- -DCONFIG_BT_PRIVACY=y -DCONFIG_BT_SCAN_WITH_IDENTITY=n > /dev/null 2>&1
+    else
+        west build -d build/tests/ble/private_central
+    fi
+
+    cp build/tests/ble/private_central/zephyr/zephyr.exe "${BSIM_OUT_PATH}/bin/ble_test_private_central.exe"
+fi
+
+testcases=$(find $path -name nrf52_bsim.keymap -exec dirname \{\} \;)
+num_cases=$(echo "$testcases" | wc -l)
+if [ $num_cases -gt 1 ] || [ "$testcases" != "${path%%/}" ]; then
+    echo "$testcases"
+    echo "" > ./build/tests/pass-fail.log
+    echo "$testcases" | BLE_TESTS_QUIET_OUTPUT=y BLE_TESTS_NO_CENTRAL_BUILD=y xargs -L 1 -P ${J:-4} ./run-ble-test.sh
+    err=$?
+    sort -k2 ./build/tests/pass-fail.log
+    exit $err
+fi
+
+testcase="$path"
+echo "Running $testcase:"
+
+west build -d build/$testcase -b nrf52_bsim -- -DZMK_CONFIG="$(pwd)/$testcase" > /dev/null 2>&1
+if [ $? -gt 0 ]; then
+    echo "FAILED: $testcase did not build" | tee -a ./build/tests/pass-fail.log
+    exit 1
+fi
+
+if [ -n "${BLE_TESTS_QUIET_OUTPUT}" ]; then
+    output_dev="/dev/null"
+else
+    output_dev="/dev/stdout"
+fi
+
+exe_name=${testcase//\//_}
+
+start_dir=$(pwd)
+cp build/$testcase/zephyr/zmk.exe "${BSIM_OUT_PATH}/bin/${exe_name}"
+pushd "${BSIM_OUT_PATH}/bin" 2>&1 > /dev/null
+if [ -e "${start_dir}/build/$testcase/output.log" ]; then
+  rm "${start_dir}/build/$testcase/output.log"
+fi
+
+central_counts=`wc -l ${start_dir}/${testcase}/centrals.txt | cut -d' ' -f1`
+./${exe_name} -d=0 -s=${exe_name} | tee -a "${start_dir}/build/$testcase/output.log" > "${output_dev}" &
+./bs_device_handbrake -s=${exe_name} -d=1 -r=10 > "${output_dev}" &
+
+cat ${start_dir}/${testcase}/centrals.txt |
+while IFS= read line
+do
+  ${line} -s=${exe_name} | tee -a "${start_dir}/build/$testcase/output.log" > "${output_dev}" &
+done
+
+./bs_2G4_phy_v1 -s=${exe_name} -D=`expr 2 + $central_counts` -sim_length=50e6 2>&1 > "${output_dev}"
+
+popd 2>&1 > /dev/null
+
+cat build/$testcase/output.log | sed -E -n -f $testcase/events.patterns > build/$testcase/filtered_output.log
+
+diff -auZ $testcase/snapshot.log build/$testcase/filtered_output.log
+if [ $? -gt 0 ]; then
+    if [ -f $testcase/pending ]; then
+        echo "PENDING: $testcase" | tee -a ./build/tests/pass-fail.log
+        exit 0
+    fi
+    echo "FAILED: $testcase" | tee -a ./build/tests/pass-fail.log
+    exit 1
+fi
+
+echo "PASS: $testcase" | tee -a ./build/tests/pass-fail.log
+exit 0

app/tests/ble/central/CMakeLists.txt

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(ble_test_central)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})
+
+# zephyr_library_include_directories(${ZEPHYR_BASE}/samples/bluetooth)

app/tests/ble/central/prj.conf

@@ -0,0 +1,9 @@
+CONFIG_BT=y
+CONFIG_LOG=y
+CONFIG_BOOT_BANNER=n
+CONFIG_BT_LOG_LEVEL_WRN=y
+CONFIG_LOG_BACKEND_SHOW_COLOR=n
+CONFIG_BT_CENTRAL=y
+CONFIG_BT_SMP=y
+CONFIG_BT_SCAN_WITH_IDENTITY=y
+CONFIG_BT_GATT_CLIENT=y