all: tests more of module generation

_examples/hi/hi.go

@@ -49,5 +49,10 @@ func (p Person) String() string {
 
 // Greet sends greetings
 func (p *Person) Greet() string {
+	return p.greet()
+}
+
+// greet sends greetings
+func (p *Person) greet() string {
 	return fmt.Sprintf("Hello, I am %s", p.Name)
 }

_examples/hi/test.py

@@ -29,12 +29,14 @@ print hi.Person.__doc__
 
 print "--- p = hi.Person()..."
 p = hi.Person()
-print p
 print dir(p)
 
 print "--- p.Name:", p.Name
 print "--- p.Age:",p.Age
 
+#print "--- p.Greet()..."
+#print p.Greet()
+
 print "--- doc(p):"
 print p.__doc__
 

main_test.go

@@ -5,10 +5,12 @@
 package main
 
 import (
+	"bytes"
 	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
+	"reflect"
 	"testing"
 )
 
@@ -47,13 +49,60 @@ func TestBind(t *testing.T) {
 		t.Fatalf("error copying 'test.py': %v\n", err)
 	}
 
+	want := []byte(`hi from go
+hello you from go
+--- doc(hi)...
+package hi exposes a few Go functions to be wrapped and used from Python.
+
+--- doc(hi.Hi)...
+Hi() 
+
+Hi prints hi from Go
+
+--- hi.Hi()...
+--- doc(hi.Hello)...
+Hello(str s) 
+
+Hello prints a greeting from Go
+
+--- hi.Hello('you')...
+--- doc(hi.Add)...
+Add(int i, int j) int
+
+Add returns the sum of its arguments.
+
+--- hi.Add(1, 41)...
+42
+--- hi.Concat('4', '2')...
+42
+--- doc(hi.Person):
+Person is a simple struct
+
+--- p = hi.Person()...
+['Age', 'Greet', 'Name', 'String', '__class__', '__delattr__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__']
+--- p.Name: None
+--- p.Age: None
+--- doc(p):
+Person is a simple struct
+
+`)
+	buf := new(bytes.Buffer)
 	cmd = exec.Command("python2", "./test.py")
 	cmd.Dir = workdir
 	cmd.Stdin = os.Stdin
-	cmd.Stdout = os.Stdout
+	cmd.Stdout = buf
-	cmd.Stderr = os.Stderr
+	cmd.Stderr = buf
 	err = cmd.Run()
 	if err != nil {
-		t.Fatal("error running python module: %v\n", err)
+		t.Fatalf(
+			"error running python module: %v\n%v\n", err,
+			string(buf.Bytes()),
+		)
+	}
+
+	if !reflect.DeepEqual(string(buf.Bytes()), string(want)) {
+		t.Fatalf("error running python module:\nwant:\n%s\n\ngot:\n%s\n",
+			string(want), string(buf.Bytes()),
+		)
 	}
 }