diff --git a/android/ninja_deps_test.go b/android/ninja_deps_test.go
new file mode 100644
index 0000000..d3775ed
--- /dev/null
+++ b/android/ninja_deps_test.go
@@ -0,0 +1,75 @@
+// Copyright 2020 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package android
+
+import (
+	"testing"
+)
+
+func init() {
+	// This variable uses ExistentPathForSource on a PackageVarContext, which is a PathContext
+	// that is not a PathGlobContext.  That requires the deps to be stored in the Config.
+	pctx.VariableFunc("test_ninja_deps_variable", func(ctx PackageVarContext) string {
+		// Using ExistentPathForSource to look for a file that does not exist in a directory that
+		// does exist (test_ninja_deps) from a PackageVarContext adds a dependency from build.ninja
+		// to the directory.
+		if ExistentPathForSource(ctx, "test_ninja_deps/does_not_exist").Valid() {
+			return "true"
+		} else {
+			return "false"
+		}
+	})
+}
+
+func testNinjaDepsSingletonFactory() Singleton {
+	return testNinjaDepsSingleton{}
+}
+
+type testNinjaDepsSingleton struct{}
+
+func (testNinjaDepsSingleton) GenerateBuildActions(ctx SingletonContext) {
+	// Reference the test_ninja_deps_variable in a build statement so Blueprint is forced to
+	// evaluate it.
+	ctx.Build(pctx, BuildParams{
+		Rule:   Cp,
+		Input:  PathForTesting("foo"),
+		Output: PathForOutput(ctx, "test_ninja_deps_out"),
+		Args: map[string]string{
+			"cpFlags": "${test_ninja_deps_variable}",
+		},
+	})
+}
+
+func TestNinjaDeps(t *testing.T) {
+	fs := map[string][]byte{
+		"test_ninja_deps/exists": nil,
+	}
+	config := TestConfig(buildDir, nil, "", fs)
+
+	ctx := NewTestContext(config)
+	ctx.RegisterSingletonType("test_ninja_deps_singleton", testNinjaDepsSingletonFactory)
+	ctx.RegisterSingletonType("ninja_deps_singleton", ninjaDepsSingletonFactory)
+	ctx.Register()
+
+	_, errs := ctx.ParseFileList(".", []string{"Android.bp"})
+	FailIfErrored(t, errs)
+	ninjaDeps, errs := ctx.PrepareBuildActions(config)
+	FailIfErrored(t, errs)
+
+	// Verify that the ninja file has a dependency on the test_ninja_deps directory.
+	if g, w := ninjaDeps, "test_ninja_deps"; !InList(w, g) {
+		t.Errorf("expected %q in %q", w, g)
+	}
+}