error tests

Author: kabiroberai

test/Macros/macro_plugin_wasm_badversion.swift

@@ -0,0 +1,32 @@
+// REQUIRES: swift_swift_parser
+
+// RUN: %empty-directory(%t)
+
+// RUN: split-file %s %t
+
+//#-- Prepare the Wasm macro plugin.
+// RUN: %swift-build-wasm-c-plugin %t/MacroDefinition.c -o %t/Plugin.wasm
+
+// RUN: %target-swift-frontend \
+// RUN:   -typecheck -verify \
+// RUN:   -swift-version 5 \
+// RUN:   -load-plugin %t/Plugin.wasm:%swift-plugin-server#MacroDefinition \
+// RUN:   -module-name MyApp \
+// RUN:   %t/test.swift
+
+//--- test.swift
+// expected-warning @+2 {{Wasm plugin has an unknown ABI (could not find 'swift_wasm_macro_v1_pump')}}
+// expected-note @+1 {{declared here}}
+@freestanding(expression) macro constInt() -> Int = #externalMacro(module: "MacroDefinition", type: "ConstMacro")
+
+func foo() {
+  // expected-error @+1 {{Wasm plugin has an unknown ABI (could not find 'swift_wasm_macro_v1_pump')}}
+  let _: Int = #constInt
+}
+
+//--- MacroDefinition.c
+__attribute__((export_name("_start")))
+void _start(void) {}
+
+__attribute__((export_name("swift_wasm_macro_v100_pump")))
+void pump(void) {}

test/Macros/macro_plugin_wasm_guest_error.swift

@@ -0,0 +1,39 @@
+// REQUIRES: swift_swift_parser
+
+// RUN: %empty-directory(%t)
+
+// RUN: split-file %s %t
+
+//#-- Prepare the Wasm macro plugin.
+// RUN: %swift-build-wasm-c-plugin %t/MacroDefinition.c -o %t/Plugin.wasm
+
+// RUN: %target-swift-frontend \
+// RUN:   -typecheck -verify \
+// RUN:   -swift-version 5 \
+// RUN:   -load-plugin %t/Plugin.wasm:%swift-plugin-server#MacroDefinition \
+// RUN:   -module-name MyApp \
+// RUN:   %t/test.swift \
+// RUN:   2>%t/macro-loading.txt
+
+// RUN: %FileCheck %s < %t/macro-loading.txt
+
+// CHECK: guest error!
+
+//--- test.swift
+@freestanding(expression) macro constInt() -> Int = #externalMacro(module: "MacroDefinition", type: "ConstMacro")
+
+func foo() {
+  // expected-error @+1 {{failed to communicate with external macro}}
+  let _: Int = #constInt
+}
+
+//--- MacroDefinition.c
+#include "Inputs/wasi_shim.h"
+
+__attribute__((export_name("_start")))
+void _start(void) {}
+
+__attribute__((export_name("swift_wasm_macro_v1_pump")))
+void pump(void) {
+  swift_abort("guest error!\n");
+}

test/Macros/macro_plugin_wasm_nostart.swift

@@ -0,0 +1,32 @@
+// REQUIRES: swift_swift_parser
+
+// RUN: %empty-directory(%t)
+
+// RUN: split-file %s %t
+
+//#-- Prepare the Wasm macro plugin.
+// RUN: %swift-build-wasm-c-plugin %t/MacroDefinition.c -o %t/Plugin.wasm
+
+// RUN: %target-swift-frontend \
+// RUN:   -typecheck -verify \
+// RUN:   -swift-version 5 \
+// RUN:   -load-plugin %t/Plugin.wasm:%swift-plugin-server#MacroDefinition \
+// RUN:   -module-name MyApp \
+// RUN:   %t/test.swift
+
+//--- test.swift
+// expected-warning @+2 {{Wasm plugin does not have a '_start' entrypoint}}
+// expected-note @+1 {{declared here}}
+@freestanding(expression) macro constInt() -> Int = #externalMacro(module: "MacroDefinition", type: "ConstMacro")
+
+func foo() {
+  // expected-error @+1 {{Wasm plugin does not have a '_start' entrypoint}}
+  let _: Int = #constInt
+}
+
+//--- MacroDefinition.c
+__attribute__((export_name("_tart")))
+void _start(void) {}
+
+__attribute__((export_name("swift_wasm_macro_v1_pump")))
+void pump(void) {}