From 507bbd8d0a8f3fdd710dbcdc107fb86f0e798c6d Mon Sep 17 00:00:00 2001
From: Alex Willmer <alex@moreati.org.uk>
Date: Wed, 1 Apr 2020 19:00:20 +0100
Subject: [PATCH] ids: Add tests for QueueSet.{init, SetHead, Append, GetTail}

---
 ids/queue_test.go | 70 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 ids/queue_test.go

diff --git a/ids/queue_test.go b/ids/queue_test.go
new file mode 100644
index 0000000..ab0dd4e
--- /dev/null
+++ b/ids/queue_test.go
@@ -0,0 +1,70 @@
+package ids
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestQueueSetinit(t *testing.T) {
+	qs := QueueSet{}
+	qs.init()
+	if qs.idList == nil {
+		t.Fatal("Failed to initialize")
+	}
+	list := qs.idList
+	qs.init()
+	if list != qs.idList {
+		t.Fatal("Mutated an already intialized queue")
+	}
+}
+
+func TestQueueSetSetHead(t *testing.T) {
+	qs := QueueSet{}
+	id := NewID([32]byte{'a', 'v', 'a', ' ', 'l', 'a', 'b', 's'})
+	qs.SetHead(id)
+	if qs.idList == nil || id != qs.idList.Front().Value.(ID) {
+		t.Fatal("Failed to set head of unintilised queue")
+	}
+
+	qs.SetHead(id)
+	if qs.idList.Len() != 1 || id != qs.idList.Front().Value.(ID) {
+		t.Fatal("Mutated a queue which already had the desired head")
+	}
+
+	id2 := NewID([32]byte{'e', 'v', 'a', ' ', 'l', 'a', 'b', 's'})
+	qs.SetHead(id2)
+	if qs.idList.Len() != 1 || id2 != qs.idList.Front().Value.(ID) {
+		t.Fatal("Didn't replace the existing head")
+	}
+}
+
+func TestQueueSetAppend(t *testing.T) {
+	qs := QueueSet{}
+	id := NewID([32]byte{'a', 'v', 'a', ' ', 'l', 'a', 'b', 's'})
+	qs.Append(id)
+	if qs.idList == nil || id != qs.idList.Front().Value.(ID) {
+		t.Fatal("Failed to append to an uninitialised queue")
+	}
+
+	id2 := NewID([32]byte{'e', 'v', 'a', ' ', 'l', 'a', 'b', 's'})
+	qs.Append(id2)
+	if qs.idList.Len() != 2 || id2 != qs.idList.Back().Value.(ID) {
+		t.Fatal("Failed to append to the back of the queue")
+	}
+}
+
+func TestQueueGetTail(t *testing.T) {
+	qs := QueueSet{}
+	tail := qs.GetTail()
+	if !reflect.DeepEqual(tail, ID{}) {
+		t.Fatalf("Empty queue returned %v, expected empty ID %v", tail, Empty)
+	}
+
+	qs.Append(NewID([32]byte{'a', 'v', 'a', ' ', 'l', 'a', 'b', 's'}))
+	id2 := NewID([32]byte{'e', 'v', 'a', ' ', 'l', 'a', 'b', 's'})
+	qs.Append(id2)
+	tail = qs.GetTail()
+	if tail != id2 {
+		t.Fatalf("Populated queue returned %v, expected %v", tail, id2)
+	}
+}