Assume that item has no attachments if there is no body (#2911)

Some response from the Graph API was returning empty body. This could be something left over from older version of the platform, but this causes issues in our codebase.

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CHANGELOG.md

@@ -8,9 +8,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased] (beta)
 
 ### Fixed
-- Fixed permissions restore in latest backup version
+- Fixed permissions restore in latest backup version.
 - Incremental OneDrive backups could panic if the delta token expired and a folder was seen and deleted in the course of item enumeration for the backup.
 - Incorrectly moving subfolder hierarchy from a deleted folder to a new folder at the same path during OneDrive incremental backup.
+- Handle calendar events with no body.
 
 ## [v0.6.1] (beta) - 2023-03-21
 

src/internal/connector/exchange/api/api.go

@@ -135,6 +135,10 @@ func checkIDAndName(c graph.Container) error {
 }
 
 func HasAttachments(body models.ItemBodyable) bool {
+	if body == nil {
+		return false
+	}
+
 	if ct, ok := ptr.ValOK(body.GetContentType()); !ok || ct == models.TEXT_BODYTYPE {
 		return false
 	}

src/internal/connector/exchange/api/api_test.go

@@ -208,6 +208,13 @@ func (suite *ExchangeServiceSuite) TestHasAttachments() {
 				return body
 			},
 		},
+		{
+			name:          "No body",
+			hasAttachment: assert.False,
+			getBodyable: func(t *testing.T) models.ItemBodyable {
+				return nil
+			},
+		},
 	}
 
 	for _, test := range tests {