[Import as member] Add executable test for C struct members

Author: milseman

test/Interpreter/Inputs/ImportAsMember/IAMVec.c

@@ -0,0 +1,15 @@
+#include "IAMVec.h"
+#include <math.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern double IAMVec3GetNorm(IAMVec3Ref self) {
+  double x = self->x, y = self->y, z = self->z;
+  return sqrt(x * x + y * y + z * z);
+}
+
+#ifdef __cplusplus
+}
+#endif

test/Interpreter/Inputs/ImportAsMember/IAMVec.h

@@ -0,0 +1,21 @@
+#ifndef IAMVEC_H
+#define IAMVEC_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct __attribute__((swift_name("Vec3"))) IAMVec3 {
+  double x, y, z;
+};
+typedef struct IAMVec3 *IAMVec3Ref;
+
+extern double IAMVec3GetNorm(IAMVec3Ref)
+    __attribute__((swift_name("getter:Vec3.norm(self:)")));
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif // IAMVEC_H

test/Interpreter/Inputs/ImportAsMember/module.map

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+module ImportAsMember {
+	header "IAMVec.h"
+}

test/Interpreter/import_as_member.swift

@@ -0,0 +1,15 @@
+// RUN: rm -rf %t
+// RUN: mkdir -p %t
+// RUN: %clang %S/Inputs/ImportAsMember/IAMVec.c -c -o %t/IAMVec.o
+// RUN: %target-build-swift -I %S/Inputs/ImportAsMember/ -Xlinker %t/IAMVec.o %s -o %t/a.out
+// RUN: %target-run %t/a.out | FileCheck %s
+
+// REQUIRES: swift_interpreter
+
+import ImportAsMember
+
+var v3 = Vec3(x: 1.0, y: 2.0, z: 2.0)
+print("Norm: \(v3.norm)") // CHECK: Norm: 3.0
+
+// TODO: Test protocols
+