From 4d847b1fa3a642b0f453811171a332abe38e66c0 Mon Sep 17 00:00:00 2001
From: Dan Croak <dan@statusok.com>
Date: Wed, 31 Dec 2025 08:58:32 -0500
Subject: [PATCH] test: build binary automatically via TestMain

Removes the need to run 'go build' before 'go test' by building the
binary in TestMain and cleaning it up after tests complete.

This makes the test suite self-contained and simplifies both the
README instructions and the GitHub Actions workflow.

Also ensures Procfile.dev is cleaned up after integration tests and
added to .gitignore as a fallback.

Co-Authored-By: Warp <agent@warp.dev>
---
 .github/workflows/test.yml |  3 ---
 .gitignore                 |  1 +
 README.md                  |  1 -
 procman_test.go            | 13 ++++++++++++-
 4 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e4a47b9..c3766fa 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,8 +17,5 @@ jobs:
         with:
           go-version: "1.25"
 
-      - name: build
-        run: go build -v -o procman .
-
       - name: test
         run: go test -v ./...
diff --git a/.gitignore b/.gitignore
index 9cb0c32..13009ac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 procman
+Procfile.dev
diff --git a/README.md b/README.md
index 8f32b06..342cbaa 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,6 @@ for a PTY interface.
 ## Developing
 
 ```bash
-go build ./...                        # build
 go test ./...                         # run tests
 go vet ./...                          # static checks
 goimports -local "$(go list -m)" -w . # format imports
diff --git a/procman_test.go b/procman_test.go
index 44d541f..0de20dc 100644
--- a/procman_test.go
+++ b/procman_test.go
@@ -9,6 +9,18 @@ import (
 	"time"
 )
 
+func TestMain(m *testing.M) {
+	cmd := exec.Command("go", "build", "-o", "procman", ".")
+	if err := cmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "failed to build: %v\n", err)
+		os.Exit(1)
+	}
+	code := m.Run()
+	os.Remove("procman")
+	os.Remove("Procfile.dev")
+	os.Exit(code)
+}
+
 func TestSetupProcesses(t *testing.T) {
 	tests := []struct {
 		name      string
@@ -134,7 +146,6 @@ func TestWriteErr(t *testing.T) {
 }
 
 // TestProcmanIntegration tests the full procman workflow.
-// Requires `go build -o procman .` to be run first.
 func TestProcmanIntegration(t *testing.T) {
 	content := "echo: echo 'hello'\nsleep: sleep 10"
 	if err := os.WriteFile("Procfile.dev", []byte(content), 0644); err != nil {