Machine refactor - part 1

the way machine was written was very adjunct and as such is in dire need
of refactoring to better structures and structure methods where
appropriate.  the weekest part is specifically around all the files that
machine requires and how some are just dynamically built on the fly.

this pr defines a new machinefile type which allows us to work with the
file and also takes into account the use of symlinks which are going to
be needed on macos due to its relatively short file length restriction.

also, added unit tests for new methods as well as anywhere else I saw a
need.

Signed-off-by: Brent Baude <bbaude@redhat.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/pkg/machine/qemu/config_test.go b/pkg/machine/qemu/config_test.go
new file mode 100644
index 000000000..e3e7437b5
--- /dev/null
+++ b/pkg/machine/qemu/config_test.go
@@ -0,0 +1,103 @@
+package qemu
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestMachineFile_GetPath(t *testing.T) {
+	path := "/var/tmp/podman/my.sock"
+	sym := "/tmp/podman/my.sock"
+	type fields struct {
+		Path    string
+		Symlink *string
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		want   string
+	}{
+		{
+			name:   "Original path",
+			fields: fields{path, nil},
+			want:   path,
+		},
+		{
+			name: "Symlink over path",
+			fields: fields{
+				Path:    path,
+				Symlink: &sym,
+			},
+			want: sym,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			m := &MachineFile{
+				Path:    tt.fields.Path,    //nolint: scopelint
+				Symlink: tt.fields.Symlink, //nolint: scopelint
+			}
+			if got := m.GetPath(); got != tt.want { //nolint: scopelint
+				t.Errorf("GetPath() = %v, want %v", got, tt.want) //nolint: scopelint
+			}
+		})
+	}
+}
+
+func TestNewMachineFile(t *testing.T) {
+	p := "/var/tmp/podman/my.sock"
+	sym := "/tmp/podman/my.sock"
+	empty := ""
+
+	m := MachineFile{
+		Path:    p,
+		Symlink: nil,
+	}
+	type args struct {
+		path    string
+		symlink *string
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    *MachineFile
+		wantErr bool
+	}{
+		{
+			name:    "Good",
+			args:    args{path: p},
+			want:    &m,
+			wantErr: false,
+		},
+		{
+			name:    "Good with Symlink",
+			args:    args{p, &sym},
+			want:    &MachineFile{p, &sym},
+			wantErr: false,
+		},
+		{
+			name:    "Bad path name",
+			args:    args{empty, nil},
+			want:    nil,
+			wantErr: true,
+		},
+		{
+			name:    "Bad symlink name",
+			args:    args{p, &empty},
+			want:    nil,
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := NewMachineFile(tt.args.path, tt.args.symlink) //nolint: scopelint
+			if (err != nil) != tt.wantErr {                           //nolint: scopelint
+				t.Errorf("NewMachineFile() error = %v, wantErr %v", err, tt.wantErr) //nolint: scopelint
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) { //nolint: scopelint
+				t.Errorf("NewMachineFile() got = %v, want %v", got, tt.want) //nolint: scopelint
+			}
+		})
+	}
+}