Merge pull request #4 from defanator/ci

Introduce basic CI workflow

Author: xmapst

.github/workflows/ci.yml

@@ -0,0 +1,45 @@
+name: ci
+
+on:
+  workflow_dispatch:
+  push:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - architecture: amd64
+            runner_os: ubuntu-24.04
+          - architecture: arm64
+            runner_os: ubuntu-24.04-arm
+    runs-on: ${{ matrix.runner_os }}
+    name: build-${{ matrix.architecture }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.24.x'
+      - name: Show environment
+        run: make show-env
+      - name: Build watchmaker
+        run: make build_native
+      - name: Build examples
+        run: make examples
+      - name: Run tests
+        run: make test
+      - name: Save binaries as artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: watchmaker-${{ matrix.architecture }}
+          path: |
+            bin/watchmaker*
+            fakeclock/*.o
+          retention-days: 14

Makefile

@@ -3,6 +3,7 @@
 TOPDIR := $(realpath $(dir $(abspath $(lastword $(MAKEFILE_LIST)))))
 SELF := $(abspath $(lastword $(MAKEFILE_LIST)))
 
+GITHUB_RUN_ID ?= 0
 GIT_URL := $(shell git remote -v|grep push|awk '{print $$2}')
 GIT_BRANCH := $(shell git rev-parse --abbrev-ref HEAD)
 GIT_COMMIT := $(shell git rev-parse HEAD)
@@ -52,6 +53,7 @@ show-var-%:
 SHOW_ENV_VARS = \
 	TOPDIR \
 	SELF \
+	GITHUB_RUN_ID \
 	GIT_URL \
 	GIT_BRANCH \
 	GIT_COMMIT \
@@ -80,7 +82,7 @@ build-env: ## Run building environment in Docker container
 	docker run -it --rm --network host -v $(shell pwd):/go/src/watchmaker -w /go/src/watchmaker golang:latest /bin/bash
 
 examples: ## Build examples
-	$(MAKE) -C example
+	$(MAKE) -C example build
 
 .PHONY: init_env_amd64
 init_env_amd64: ## Install dependencies to amd64/x86_64 host
@@ -179,8 +181,17 @@ build_arm64_aarch64: build_arm64_arm64
 
 build_arm64: build_arm64_$(ARCH) ## Build arm64 binaries (auto-detect host arch)
 
+build_x86_64: build_amd64
+build_aarch64: build_arm64
+build_native: build_$(ARCH)
+
+.PHONY: test
+test: ## Run tests
+	GITHUB_RUN_ID=$(GITHUB_RUN_ID) make -C test test
+
 .PHONY: clean
 clean: ## Clean up
 	rm -f fakeclock/*.o
 	rm -rf bin
 	$(MAKE) -C example clean
+	$(MAKE) -C test clean

test/Makefile

@@ -0,0 +1,21 @@
+#!/usr/bin/env make -f
+
+TOPDIR := $(realpath $(dir $(abspath $(lastword $(MAKEFILE_LIST)))))
+SELF := $(abspath $(lastword $(MAKEFILE_LIST)))
+
+TESTS_C = test_clock_gettime test_gettimeofday test_time
+SOURCES_C = $(addsuffix .c, $(TESTS_C))
+
+build: $(TESTS_C)
+
+$(TESTS_C): $(SOURCES_C)
+	gcc -o $@ $@.c
+
+run-test-%: $(TESTS_C)
+	$(TOPDIR)/runtest.sh "$*" "$(TOPDIR)"
+
+test: run-test-clock_gettime run-test-gettimeofday run-test-time
+
+.PHONY: clean
+clean:
+	rm -f $(TESTS_C)

test/runtest.sh

@@ -0,0 +1,38 @@
+#!/bin/sh -eux
+
+if [ "${GITHUB_RUN_ID}" -gt 0 ]; then
+    _SUDO="sudo"
+else
+    _SUDO=
+fi
+
+TESTPROC="$1"
+TESTROOT="$2"
+OUTPUT=$(mktemp "/tmp/test-${TESTPROC}.XXXXXX")
+
+cleanup() {
+    rm -f "${OUTPUT}"
+}
+
+trap "cleanup" EXIT
+
+_GOARCH=$(go env GOARCH)
+
+if [ ! -x "${TESTROOT}/test_${TESTPROC}" ]; then
+    echo "${TESTROOT}/test_${TESTPROC} not found" >&2
+    exit 1
+fi
+
+"${TESTROOT}/test_${TESTPROC}" >"${OUTPUT}" 2>&1 &
+
+pid=$!
+
+sleep 1
+
+${_SUDO} "${TESTROOT}/../bin/watchmaker_linux_${_GOARCH}" --faketime '2021-01-01' --pid "$pid"
+
+wait
+
+cat "${OUTPUT}"
+
+grep -l -- "2021" "${OUTPUT}"

test/test_clock_gettime.c

@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <time.h>
+
+int main() {
+    struct timespec ts_realtime;
+    struct tm *tm_info;
+    char buffer[26];
+
+    for (int i = 0; i < 10; i++) {
+        if (clock_gettime(CLOCK_REALTIME, &ts_realtime) == -1) {
+            perror("clock_gettime(CLOCK_REALTIME) failed");
+            return 1;
+        }
+
+        tm_info = localtime(&ts_realtime.tv_sec);
+        if (tm_info == NULL) {
+            perror("localtime() failed");
+            return 1;
+        }
+
+        strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", tm_info);
+        printf("[%d] clock_gettime(CLOCK_REALTIME) returns: %s.%09ld\n", getpid(), buffer, ts_realtime.tv_nsec);
+
+        sleep(1);
+    }
+
+    return 0;
+}

test/test_gettimeofday.c

@@ -0,0 +1,31 @@
+#include <sys/time.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <time.h>
+
+int main() {
+    struct timeval tv;
+    struct tm *tm_info;
+    char buffer[26];
+
+    for (int i = 0; i < 10; i++) {
+        if (gettimeofday(&tv, NULL) == -1) {
+            perror("gettimeofday() failed");
+            return 1;
+        }
+
+        tm_info = localtime(&tv.tv_sec);
+
+        if (tm_info == NULL) {
+            perror("localtime() failed");
+            return 1;
+        }
+
+        strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", tm_info);
+
+        printf("[%d] gettimeofday() returns: %s.%06ld\n", getpid(), buffer, tv.tv_usec);
+        sleep(1);
+    }
+
+    return 0;
+}

test/test_time.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <time.h>
+
+int main() {
+    time_t current_time;
+
+    for (int i = 0; i < 10; i++) {
+        current_time = time(NULL);
+        if (current_time == -1) {
+            perror("time() failed");
+            return 1;
+        }
+
+        printf("[%d] time() returns: %s", getpid(), ctime(&current_time));
+
+        sleep(1);
+    }
+
+    return 0;
+}