From 57c7df665788bbb524c544ce5dea66b1aade63d3 Mon Sep 17 00:00:00 2001
From: Joshua MacDonald <josh.macdonald@gmail.com>
Date: Sat, 24 Jan 2015 22:55:24 -0800
Subject: Golang regtest framework for testing program execution using pipes,
 including a named pipe for the source file

---
 xdelta3/go/src/regtest.go | 83 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 xdelta3/go/src/regtest.go

(limited to 'xdelta3/go/src/regtest.go')

diff --git a/xdelta3/go/src/regtest.go b/xdelta3/go/src/regtest.go
new file mode 100644
index 0000000..aee419d
--- /dev/null
+++ b/xdelta3/go/src/regtest.go
@@ -0,0 +1,83 @@
+package main
+
+import (
+	"io"
+	"io/ioutil"
+	"xdelta"
+)
+
+const (
+	prog = "/Users/jmacd/src/xdelta/xdelta3/xdelta3"
+)
+
+func drain(f io.ReadCloser) <-chan []byte {
+	c := make(chan []byte)
+	go func() {
+		if b, err := ioutil.ReadAll(f); err != nil {
+			panic(err)
+		} else {
+			c <- b
+		}
+	}()
+	return c
+}
+
+func empty(f io.ReadCloser) {
+	go func() {
+		if _, err := ioutil.ReadAll(f); err != nil {
+			panic(err)
+		}
+	}()
+}
+
+func write(f io.WriteCloser, b []byte) {
+	if _, err := f.Write(b); err != nil {
+		panic(err)
+	}
+	if err := f.Close(); err != nil {
+		panic(err)
+	}
+}
+
+func main() {
+	x := xdelta.Program{prog}
+	smokeTest(x)
+}
+
+func smokeTest(p xdelta.Program) {
+	target := "Hello world!"
+	source := "Hello world, nice to meet you!"
+	
+	run, err := p.Exec(true, []string{"-e"})
+	if err != nil {
+		panic(err)
+	}
+	encodeout := drain(run.Stdout)
+	empty(run.Stderr)
+
+	write(run.Stdin, []byte(target))
+	write(run.Srcin, []byte(source))
+
+	if err := run.Cmd.Wait(); err != nil {
+		panic(err)
+	}
+
+	run, err = p.Exec(true, []string{"-d"})
+	if err != nil {
+		panic(err)
+	}
+
+	decodeout := drain(run.Stdout)
+	empty(run.Stderr)
+
+	write(run.Stdin, <-encodeout)
+	write(run.Srcin, []byte(source))
+
+	if err := run.Cmd.Wait(); err != nil {
+		panic(err)
+	}
+
+	if string(<-decodeout) != target {
+		panic("It's not working!!!")
+	}
+}
-- 
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