From 0b43d1f82c8b51e5b4d1fd1e91dafc0d319d8745 Mon Sep 17 00:00:00 2001
From: Marcel Edmund Franke <marcel.edmund.franke@gmail.com>
Date: Sat, 30 Sep 2017 16:58:53 +0200
Subject: [PATCH 1/4] - Added: Example test for Run

---
 concurrent/doc_test.go | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 concurrent/doc_test.go

diff --git a/concurrent/doc_test.go b/concurrent/doc_test.go
new file mode 100644
index 0000000..52f8531
--- /dev/null
+++ b/concurrent/doc_test.go
@@ -0,0 +1,32 @@
+package concurrent_test
+
+import (
+	"fmt"
+	"github.com/donutloop/toolkit/concurrent"
+	"sync/atomic"
+)
+
+// Run concurrently your func() error
+func ExampleRun() {
+
+	counter := int32(0)
+	errs := concurrent.Run(
+		func() error {
+			atomic.AddInt32(&counter, 40)
+			return nil
+		},
+		func() error {
+			atomic.AddInt32(&counter, 2)
+			return nil
+		},
+	)
+
+	if len(errs) > 0 {
+		for _, err := range errs {
+			fmt.Println(fmt.Sprintf("error: %v", err))
+		}
+	}
+
+	fmt.Println(counter)
+	// Output: 42
+}

From caaf8d370676ae06baf1133bb0298eb6d8faa8d2 Mon Sep 17 00:00:00 2001
From: Marcel Edmund Franke <marcel.edmund.franke@gmail.com>
Date: Sat, 30 Sep 2017 17:13:19 +0200
Subject: [PATCH 2/4] - Added: Example test for simple hook

---
 event/doc_test.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 event/doc_test.go

diff --git a/event/doc_test.go b/event/doc_test.go
new file mode 100644
index 0000000..2ae9416
--- /dev/null
+++ b/event/doc_test.go
@@ -0,0 +1,21 @@
+package event_test
+
+import (
+	"fmt"
+	"github.com/donutloop/toolkit/event"
+)
+
+func ExampleHooks() {
+
+	hooks := new(event.Hooks)
+	hooks.Add(func() { fmt.Println("kernel request") })
+
+	errs := hooks.Fire()
+	if len(errs) > 0 {
+		for _, err := range errs {
+			fmt.Println(fmt.Sprintf("error: %v", err))
+		}
+	}
+
+	// Output: kernel request
+}

From a7c80bbfbbd2194c360b97696504f108f0fbf861 Mon Sep 17 00:00:00 2001
From: Marcel Edmund Franke <marcel.edmund.franke@gmail.com>
Date: Sat, 30 Sep 2017 17:26:05 +0200
Subject: [PATCH 3/4] - Added: example test for looper

---
 loop/doc_test.go | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 loop/doc_test.go

diff --git a/loop/doc_test.go b/loop/doc_test.go
new file mode 100644
index 0000000..aff508c
--- /dev/null
+++ b/loop/doc_test.go
@@ -0,0 +1,20 @@
+package loop_test
+
+import (
+	"github.com/donutloop/toolkit/loop"
+	"time"
+	"fmt"
+)
+
+func ExampleLoop() {
+
+	loop.NewLooper(1*time.Second, func() error {
+		// do after one second things
+		return nil
+	})
+
+	// error and stop handling is missing for simplicity
+
+	fmt.Println("successfully")
+	// Output: successfully
+}

From ae6ce38e104356bc4c63041319b81d925c9cdef1 Mon Sep 17 00:00:00 2001
From: Marcel Edmund Franke <marcel.edmund.franke@gmail.com>
Date: Sat, 30 Sep 2017 17:33:08 +0200
Subject: [PATCH 4/4] - Added: Example test for simple promise

---
 loop/doc_test.go    |  2 +-
 promise/doc_test.go | 23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 promise/doc_test.go

diff --git a/loop/doc_test.go b/loop/doc_test.go
index aff508c..e708daf 100644
--- a/loop/doc_test.go
+++ b/loop/doc_test.go
@@ -1,9 +1,9 @@
 package loop_test
 
 import (
+	"fmt"
 	"github.com/donutloop/toolkit/loop"
 	"time"
-	"fmt"
 )
 
 func ExampleLoop() {
diff --git a/promise/doc_test.go b/promise/doc_test.go
new file mode 100644
index 0000000..a65af83
--- /dev/null
+++ b/promise/doc_test.go
@@ -0,0 +1,23 @@
+package promise_test
+
+import (
+	"context"
+	"fmt"
+	"github.com/donutloop/toolkit/promise"
+)
+
+func ExamplePromise() {
+
+	done, errc := promise.Do(context.Background(), func(ctx context.Context) error {
+		fmt.Println("do things")
+		return nil
+	})
+
+	select {
+	case <-done:
+	case err := <-errc:
+		fmt.Println(fmt.Sprintf("error: %v", err))
+	}
+
+	// Output: do things
+}