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Guard EntryMacro tests with
SwiftSyntax600 availability check
Tests cover new lexical context feature of SwiftSyntaxMacros.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,52 +1,54 @@ | ||
| import MacroTesting | ||
| import XCTest | ||
| #if canImport(SwiftSyntax600) | ||
| import MacroTesting | ||
| import XCTest | ||
|
|
||
| final class EntryMacroTests: BaseTestCase { | ||
| override func invokeTest() { | ||
| withMacroTesting( | ||
| macros: [ | ||
| EntryMacro.self | ||
| ] | ||
| ) { | ||
| super.invokeTest() | ||
| final class EntryMacroTests: BaseTestCase { | ||
| override func invokeTest() { | ||
| withMacroTesting( | ||
| macros: [ | ||
| EntryMacro.self | ||
| ] | ||
| ) { | ||
| super.invokeTest() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func testWithinEnvironmentValues() { | ||
| assertMacro { | ||
| """ | ||
| extension EnvironmentValues { | ||
| @Entry var x: String = "" | ||
| } | ||
| """ | ||
| } expansion: { | ||
| """ | ||
| extension EnvironmentValues { | ||
| var x: String { | ||
| get { | ||
| fatalError() | ||
| func testWithinEnvironmentValues() { | ||
| assertMacro { | ||
| """ | ||
| extension EnvironmentValues { | ||
| @Entry var x: String = "" | ||
| } | ||
| """ | ||
| } expansion: { | ||
| """ | ||
| extension EnvironmentValues { | ||
| var x: String { | ||
| get { | ||
| fatalError() | ||
| } | ||
| } | ||
| } | ||
| """ | ||
| } | ||
| """ | ||
| } | ||
| } | ||
|
|
||
| func testNotWithinEnvironmentValues() { | ||
| assertMacro { | ||
| """ | ||
| extension String { | ||
| @Entry var x: String = "" | ||
| } | ||
| """ | ||
| } diagnostics: { | ||
| """ | ||
| extension String { | ||
| @Entry var x: String = "" | ||
| ┬───── | ||
| ╰─ 🛑 '@Entry' macro can only attach to var declarations inside extensions of EnvironmentValues | ||
| func testNotWithinEnvironmentValues() { | ||
| assertMacro { | ||
| """ | ||
| extension String { | ||
| @Entry var x: String = "" | ||
| } | ||
| """ | ||
| } diagnostics: { | ||
| """ | ||
| extension String { | ||
| @Entry var x: String = "" | ||
| ┬───── | ||
| ╰─ 🛑 '@Entry' macro can only attach to var declarations inside extensions of EnvironmentValues | ||
| } | ||
| """ | ||
| } | ||
| """ | ||
| } | ||
| } | ||
| } | ||
| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,27 +1,30 @@ | ||
| import SwiftSyntax | ||
| import SwiftSyntaxMacros | ||
| #if canImport(SwiftSyntax600) | ||
| import SwiftSyntax | ||
| import SwiftSyntaxMacros | ||
|
|
||
| // Not complete, just enough to unit test lexical context. | ||
| public struct EntryMacro: AccessorMacro { | ||
| public static func expansion( | ||
| of node: AttributeSyntax, | ||
| providingAccessorsOf declaration: some DeclSyntaxProtocol, | ||
| in context: some MacroExpansionContext | ||
| ) throws -> [AccessorDeclSyntax] { | ||
| let isInEnvironmentValues = context.lexicalContext.contains { lexicalContext in | ||
| lexicalContext.as(ExtensionDeclSyntax.self)?.extendedType.trimmedDescription | ||
| == "EnvironmentValues" | ||
| } | ||
|
|
||
| guard isInEnvironmentValues else { | ||
| throw MacroExpansionErrorMessage( | ||
| "'@Entry' macro can only attach to var declarations inside extensions of EnvironmentValues") | ||
| } | ||
| // Not complete, just enough to unit test lexical context. | ||
| public struct EntryMacro: AccessorMacro { | ||
| public static func expansion( | ||
| of node: AttributeSyntax, | ||
| providingAccessorsOf declaration: some DeclSyntaxProtocol, | ||
| in context: some MacroExpansionContext | ||
| ) throws -> [AccessorDeclSyntax] { | ||
| let isInEnvironmentValues = context.lexicalContext.contains { lexicalContext in | ||
| lexicalContext.as(ExtensionDeclSyntax.self)?.extendedType.trimmedDescription | ||
| == "EnvironmentValues" | ||
| } | ||
|
|
||
| return [ | ||
| AccessorDeclSyntax(accessorSpecifier: .keyword(.get)) { | ||
| "fatalError()" | ||
| guard isInEnvironmentValues else { | ||
| throw MacroExpansionErrorMessage( | ||
| "'@Entry' macro can only attach to var declarations inside extensions of EnvironmentValues" | ||
| ) | ||
| } | ||
| ] | ||
|
|
||
| return [ | ||
| AccessorDeclSyntax(accessorSpecifier: .keyword(.get)) { | ||
| "fatalError()" | ||
| } | ||
| ] | ||
| } | ||
| } | ||
| } | ||
| #endif |