Add gap test

msp/timeline_test.go

@@ -240,6 +240,26 @@ func TestGenerateTime(t *testing.T) {
 				},
 			},
 		},
+		{
+			testID: "periods with a gap in the middle",
+			ts:     now,
+			result: []string{
+				fmt.Sprintf("A\t%s\t%s\n", now.Add(-time.Minute*10), now.Add(-time.Minute*5)),
+				fmt.Sprintf("B\t%s\t%s\n", now.Add(time.Minute*5), now.Add(time.Minute*10)),
+			},
+			periods: []Period{
+				TimeWindow{
+					StartTime:  now.Add(-time.Minute * 10),
+					EndTime:    now.Add(-time.Minute * 5),
+					Identifier: "A",
+				},
+				TimeWindow{
+					StartTime:  now.Add(time.Minute * 5),
+					EndTime:    now.Add(time.Minute * 10),
+					Identifier: "B",
+				},
+			},
+		},
 	}
 
 	for _, tc := range testCases {