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f12f0ccd01
This adjusts the test diffing to ignore the whitespace changes across different platforms. `raw_fd_ostream` will write out `OF_Text` files with the platform's line endings, which may differ from the source file's.
113 lines
3.0 KiB
Swift
113 lines
3.0 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -c -swift-version 4 -primary-file %s -emit-migrated-file-path %t/optional_try_migration.result.swift
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// RUN: diff --strip-trailing-cr -u %S/optional_try_migration.swift.expected %t/optional_try_migration.result.swift
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func fetchOptInt() throws -> Int? {
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return 3
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}
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func fetchInt() throws -> Int {
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return 3
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}
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func fetchAny() throws -> Any {
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return 3
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}
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func testOnlyMigrateChangedBehavior() {
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// No migration needed
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let _ = try? fetchInt()
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// Migration needed
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let _ = try? fetchOptInt()
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}
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func testExplicitCasts() {
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// No migration needed, because there's an explicit cast on the try already
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let _ = (try? fetchOptInt()) as? Int
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// Migration needed; the 'as? Int' is part of the sub-expression
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let _ = try? fetchAny() as? Int
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// No migration needed; the subexpression is non-optional so behavior has not changed
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let _ = (try? fetchAny()) as? Int
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// No migration needed, because there's an explicit cast on the try already
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let _ = (try? fetchOptInt()) as! Int // expected-warning {{forced cast from 'Int??' to 'Int' only unwraps optionals; did you mean to use '!!'?}}
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// No migration needed; the subexpression is non-optional
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let _ = try? fetchAny() as! Int
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// No migration needed; the subexpression is non-optional so behavior has not changed
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let _ = (try? fetchAny()) as! Int
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// Migration needed; the explicit cast is not directly on the try?
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let _ = String(describing: try? fetchOptInt()) as Any
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// No migration needed, because the try's subexpression is non-optional
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let _ = String(describing: try? fetchInt()) as Any
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}
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func testOptionalChaining() {
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struct Thing {
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func fetchInt() throws -> Int { return 3 }
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func fetchOptInt() throws -> Int { return 3 }
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}
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let thing = Thing()
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let optThing: Thing? = Thing()
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// Migration needed
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let _ = try? optThing?.fetchInt()
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// Migration needed
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let _ = try? optThing?.fetchOptInt()
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// No migration needed
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let _ = try? optThing!.fetchOptInt()
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// No migration needed, because of the explicit cast
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let _ = (try? optThing?.fetchOptInt()) as? Int
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// Migration needed
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let _ = try? thing.fetchInt()
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// Migration needed
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let _ = try? thing.fetchOptInt()
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// No migration needed, because of the explicit cast
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let _ = (try? thing.fetchOptInt()) as! Int // expected-warning {{forced cast from 'Int?' to 'Int' only unwraps optionals; did you mean to use '!'?}}
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}
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func testIfLet() {
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// Migration needed
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if let optionalX = try? fetchOptInt(),
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let x = optionalX
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{
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print(x)
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}
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// Don't change 'try?'s that haven't changed behavior
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if let x = try? fetchInt(),
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let y = try? fetchInt() {
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print(x, y)
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}
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}
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func testCaseMatching() {
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// Migration needed
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if case let x?? = try? fetchOptInt() {
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print(x)
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}
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// No migration needed
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if case let x? = try? fetchInt() {
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print(x)
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}
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}
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