Introduce test and dockerfile

Dockerfile

@@ -0,0 +1,36 @@
+# Use the official Golang image to build the Go application
+FROM golang:1.23-alpine AS builder
+
+# Set the working directory inside the container
+WORKDIR /src
+
+# Copy the Go module files and download dependencies
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy the rest of the application code
+COPY . .
+
+# Build the Go application
+RUN go build -o /app/main main.go
+
+# Use a minimal image for the final container
+FROM alpine:latest
+
+# Install dumb-init
+RUN apk --no-cache add dumb-init
+
+# Set the working directory inside the container
+WORKDIR /app
+
+# Copy the built Go application from the builder stage
+COPY --from=builder /app/main .
+
+# Expose the port the application runs on
+EXPOSE 8080
+
+# Use dumb-init as the entrypoint to handle PID 1 correctly
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+
+# Command to run the Go application
+CMD ["/app/main"]

Makefile

@@ -0,0 +1,7 @@
+.PHONY: build-image
+build-image:
+	docker build -t http-crash .
+
+.PHONY: run-container
+run-container:
+	docker run --rm -p 8080:8080 http-crash

go.mod

@@ -1,3 +1,11 @@
 module github.com/troydai/http-crash
 
 go 1.23.2
+
+require github.com/stretchr/testify v1.10.0
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,10 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main_test.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"io"
+	"log/slog"
+	"net/http"
+	"sync/atomic"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestServer(t *testing.T) {
+	s := &server{
+		counter:   &atomic.Uint64{},
+		frequency: 10,
+		logger:    slog.New(slog.NewTextHandler(io.Discard, nil)),
+	}
+	s.handler(&fakeResponseWriter{}, randomRequest())
+	assert.Equal(t, uint64(1), s.counter.Load())
+}
+
+func randomRequest() *http.Request {
+	req, err := http.NewRequest("GET", "http://example.com", nil)
+	if err != nil {
+		panic(err)
+	}
+	return req
+}
+
+type fakeResponseWriter struct{}
+
+func (frw *fakeResponseWriter) Header() http.Header {
+	return http.Header{}
+}
+
+func (frw *fakeResponseWriter) Write(data []byte) (int, error) {
+	return len(data), nil
+}
+
+func (frw *fakeResponseWriter) WriteHeader(statusCode int) {}