Kokoro: Add stub (noop) test files for macOS.

Will be fleshed out in another set of changes.

Bug: b/130343040
Change-Id: I3df91cbeb60aba555020e21ffdf6feaa12865389
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/29031
Presubmit-Ready: Ben Clayton <bclayton@google.com>
Tested-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/tests/kokoro/macos/continuous.sh b/tests/kokoro/macos/continuous.sh
new file mode 100755
index 0000000..805a8ba
--- /dev/null
+++ b/tests/kokoro/macos/continuous.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+# TODO(b/130343040): Stub implementation.
\ No newline at end of file
diff --git a/tests/kokoro/macos/reactor_llvm/continuous.cfg b/tests/kokoro/macos/reactor_llvm/continuous.cfg
new file mode 100644
index 0000000..6c1b0f0
--- /dev/null
+++ b/tests/kokoro/macos/reactor_llvm/continuous.cfg
@@ -0,0 +1,9 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Location of the continuous bash script in Git.
+build_file: "SwiftShader/tests/kokoro/macos/continuous.sh"
+
+env_vars {
+  key: "REACTOR_BACKEND"
+  value: "LLVM"
+}
diff --git a/tests/kokoro/macos/reactor_llvm/presubmit.cfg b/tests/kokoro/macos/reactor_llvm/presubmit.cfg
new file mode 100644
index 0000000..6c1b0f0
--- /dev/null
+++ b/tests/kokoro/macos/reactor_llvm/presubmit.cfg
@@ -0,0 +1,9 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Location of the continuous bash script in Git.
+build_file: "SwiftShader/tests/kokoro/macos/continuous.sh"
+
+env_vars {
+  key: "REACTOR_BACKEND"
+  value: "LLVM"
+}
diff --git a/tests/kokoro/macos/reactor_subzero/continuous.cfg b/tests/kokoro/macos/reactor_subzero/continuous.cfg
new file mode 100644
index 0000000..fe437b4
--- /dev/null
+++ b/tests/kokoro/macos/reactor_subzero/continuous.cfg
@@ -0,0 +1,9 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Location of the continuous bash script in Git.
+build_file: "SwiftShader/tests/kokoro/macos/continuous.sh"
+
+env_vars {
+  key: "REACTOR_BACKEND"
+  value: "Subzero"
+}
diff --git a/tests/kokoro/macos/reactor_subzero/presubmit.cfg b/tests/kokoro/macos/reactor_subzero/presubmit.cfg
new file mode 100644
index 0000000..fe437b4
--- /dev/null
+++ b/tests/kokoro/macos/reactor_subzero/presubmit.cfg
@@ -0,0 +1,9 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Location of the continuous bash script in Git.
+build_file: "SwiftShader/tests/kokoro/macos/continuous.sh"
+
+env_vars {
+  key: "REACTOR_BACKEND"
+  value: "Subzero"
+}