compiler: add go test command

_demo/runtest/bar/bar.go

@@ -0,0 +1,5 @@
+package bar
+
+func Bar() int {
+	return 2
+}

_demo/runtest/bar/bar_test.go

@@ -0,0 +1,9 @@
+package bar
+
+import "testing"
+
+func TestBar(t *testing.T) {
+	if Bar() != 2 {
+		t.Fatal("Bar() != 2")
+	}
+}

_demo/runtest/foo/foo.go

@@ -0,0 +1,5 @@
+package foo
+
+func Foo() int {
+	return 1
+}

_demo/runtest/foo/foo_test.go

@@ -0,0 +1,9 @@
+package foo
+
+import "testing"
+
+func TestFoo(t *testing.T) {
+	if Foo() != 1 {
+		t.Fatal("Foo() != 1")
+	}
+}

_demo/runtest/main.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	"github.com/goplus/llgo/_demo/runtest/bar"
+	"github.com/goplus/llgo/_demo/runtest/foo"
+)
+
+func Zoo() int {
+	return 3
+}
+
+func main() {
+	println("foo.Foo()", foo.Foo())
+	println("bar.Bar()", bar.Bar())
+	println("Zoo()", Zoo())
+}

_demo/runtest/main_test.go

@@ -0,0 +1,9 @@
+package main
+
+import "testing"
+
+func TestZoo(t *testing.T) {
+	if Zoo() != 3 {
+		t.Fatal("Zoo() != 3")
+	}
+}