Add failure message to assert in testSystemModuleInterface

ahoppen · ahoppen · commit abdb0a0b37ba · 2023-01-24T15:05:50.000+01:00
This helps us debug if the test fails in CI.
diff --git a/Tests/SourceKitLSPTests/SwiftInterfaceTests.swift b/Tests/SourceKitLSPTests/SwiftInterfaceTests.swift
@@ -79,7 +79,7 @@ final class SwiftInterfaceTests: XCTestCase {
     XCTAssertTrue(location.uri.pseudoPath.hasSuffix("/Foundation.swiftinterface"))
     let fileContents = try XCTUnwrap(location.uri.fileURL.flatMap({ try String(contentsOf: $0, encoding: .utf8) }))
     // Sanity-check that the generated Swift Interface contains Swift code
-    XCTAssertTrue(fileContents.hasPrefix("import "))
+    XCTAssert(fileContents.hasPrefix("import "), "Expected that the foundation swift interface starts with 'import ' but got '\(fileContents.prefix(100))'")
   }
   
   func testOpenInterface() throws {

Original file line number	Diff line number	Diff line change
`@@ -79,7 +79,7 @@ final class SwiftInterfaceTests: XCTestCase {`
`79`	`79`	`XCTAssertTrue(location.uri.pseudoPath.hasSuffix("/Foundation.swiftinterface"))`
`80`	`80`	`let fileContents = try XCTUnwrap(location.uri.fileURL.flatMap({ try String(contentsOf: $0, encoding: .utf8) }))`
`81`	`81`	`// Sanity-check that the generated Swift Interface contains Swift code`
`82`		`- XCTAssertTrue(fileContents.hasPrefix("import "))`
	`82`	`+ XCTAssert(fileContents.hasPrefix("import "), "Expected that the foundation swift interface starts with 'import ' but got '\(fileContents.prefix(100))'")`
`83`	`83`	`}`
`84`	`84`
`85`	`85`	`func testOpenInterface() throws {`