2 files changed, 44 insertions, 0 deletions
diff --git a/tools/interface_generator/test/BUILD.bazel b/tools/interface_generator/test/BUILD.bazel
new file mode 100644
index 0000000..2166c4e
--- /dev/null
+++ b/tools/interface_generator/test/BUILD.bazel
@@ -0,0 +1,24 @@
+load("//:defs.bzl", "generate_interface")
+
+generate_interface(
+    name = "kstdio",
+    interface = "kstdio",
+    license = "//:LICENSE.md",
+    visibility = ["//visibility:private"],
+)
+
+cc_library(
+    name = "kstdio_mock",
+    srcs = ["kstdio_mock.cpp"],
+    deps = [
+        ":kstdio",
+        "@googletest//:gtest",
+        "@googletest//:gtest_main",
+    ],
+)
+
+cc_test(
+    name = "test_kstdio",
+    srcs = ["test_kstdio.cpp"],
+    deps = [":kstdio_mock"],
+)
diff --git a/tools/interface_generator/test/test_kstdio.cpp b/tools/interface_generator/test/test_kstdio.cpp
new file mode 100644
index 0000000..95540a4
--- /dev/null
+++ b/tools/interface_generator/test/test_kstdio.cpp
@@ -0,0 +1,20 @@
+#include "kstdio_mock.hpp"
+
+using ::testing::StrEq;
+
+class kstdioFixture : public ::testing::Test {
+protected:
+  void
+  SetUp()
+  {
+  }
+
+  kstdio_mock m_kstdio_mock;
+};
+
+TEST_F(kstdioFixture, printfCallsMock)
+{
+  EXPECT_CALL(m_kstdio_mock, printf(StrEq("hello world")));
+
+  kstdio_printf("hello world");
+}