Create mock os.Fileinfo

Create a function `sizer` (Probably ought to be Sizer or a bettername)
that allows one to specify what Size() returns. Used in testing.

Signed-off-by: Icarus Sparry <icarus.w.sparry@intel.com>

swupd/manifest_test.go

@@ -369,21 +369,21 @@ func TestSortFilesVersionName(t *testing.T) {
 func TestLinkPeersAndChange(t *testing.T) {
 	mOld := Manifest{
 		Files: []*File{
-			{Name: "1", Status: StatusUnset},
-			{Name: "2", Status: StatusDeleted},
-			{Name: "3", Status: StatusGhosted},
-			{Name: "4", Status: StatusUnset},
-			{Name: "5", Status: StatusUnset, Hash: 1},
+			{Name: "1", Status: StatusUnset, Info: sizer(0)},
+			{Name: "2", Status: StatusDeleted, Info: sizer(0)},
+			{Name: "3", Status: StatusGhosted, Info: sizer(0)},
+			{Name: "4", Status: StatusUnset, Info: sizer(0)},
+			{Name: "5", Status: StatusUnset, Hash: 1, Info: sizer(0)},
 		},
 	}
 
 	mNew := Manifest{
 		Files: []*File{
-			{Name: "1", Status: StatusUnset, Hash: 1},
-			{Name: "2", Status: StatusUnset},
-			{Name: "3", Status: StatusUnset},
-			{Name: "5", Status: StatusUnset, Hash: 2},
-			{Name: "6", Status: StatusUnset},
+			{Name: "1", Status: StatusUnset, Hash: 1, Info: sizer(0)},
+			{Name: "2", Status: StatusUnset, Info: sizer(0)},
+			{Name: "3", Status: StatusUnset, Info: sizer(0)},
+			{Name: "5", Status: StatusUnset, Hash: 2, Info: sizer(0)},
+			{Name: "6", Status: StatusUnset, Info: sizer(0)},
 		},
 	}
 

swupd/rename_test.go

@@ -0,0 +1,22 @@
+package swupd
+
+import (
+	"os"
+)
+
+// Need to set up a type to hold the FileInfo
+// as we are not holding them on disk
+type mockinfo struct {
+	os.FileInfo // Embedded but only used to get things like Name() method
+	size        int64
+}
+
+// Here is the method to override the FileInfo.Size() for mockinfo
+func (m mockinfo) Size() int64 {
+	return m.size
+}
+
+// Constructor for os.FileInfo using mockinfo
+func sizer(s int64) os.FileInfo {
+	return mockinfo{size: s}
+}