Don't show the coverage message if the targets are empty

Author: f-meloni

Sources/DangerDependencies/Fake.swift

@@ -0,0 +1 @@
+

Sources/DangerSwiftCoverage/XcodeBuild/XcodeBuildCoverageParser.swift

@@ -16,7 +16,9 @@ enum XcodeBuildCoverageParser: XcodeBuildCoverageParsing {
         var coverage = try JSONDecoder().decode(XcodeBuildCoverage.self, from: data)
         coverage = coverage.filteringTargets(notOn: files, excludedTargets: excludedTargets)
 
-        return Report(messages: ["Project coverage: \(coverage.percentageCoverage.description)%"],
-                      sections: coverage.targets.map { ReportSection(fromTarget: $0) })
+        let targets = coverage.targets.map { ReportSection(fromTarget: $0) }
+        let messages = !targets.isEmpty ? ["Project coverage: \(coverage.percentageCoverage.description)%"] : []
+
+        return Report(messages: messages, sections: targets)
     }
 }

Tests/DangerSwiftCoverageTests/XcodeBuildCoverageParserTests.swift

@@ -83,7 +83,8 @@ final class XcodeBuildCoverageParserTests: XCTestCase {
 
         let result = try! XcodeBuildCoverageParser.coverage(xcresultBundlePath: "derived", files: files, excludedTargets: [], coverageFileFinder: FakeXcodeCoverageFileFinder.self, xcCovParser: MockedXcCovJSONParser.self)
 
-        XCTAssertEqual(result.messages, ["Project coverage: 50.09%"])
+        XCTAssertEqual(result.messages, [])
+        XCTAssertEqual(result.sections.count, 0)
     }
 }