Added test.

Author: David Ungar

test/NameBinding/reference-dependencies-consistency.swift

@@ -0,0 +1,15 @@
+// Some types, such as StringLiteralType, used to be cached in the TypeChecker.
+// Consequently, the second primary file (in batch mode) to use that type would
+// hit in the cache and no dependency would be recorded.
+// This test ensures that this bug stays fixed.
+//
+// RUN: %empty-directory(%t)
+//
+// Create two identical inputs, each needing StringLiteralType:
+//
+// RUN: echo 'fileprivate var v: String { return "\(x)" }; fileprivate let x = "a"' >%t/1.swift
+// RUN: echo 'fileprivate var v: String { return "\(x)" }; fileprivate let x = "a"' >%t/2.swift
+//
+// RUN:  %target-swift-frontend -typecheck -primary-file %t/1.swift -primary-file %t/2.swift -emit-reference-dependencies-path %t/1.swiftdeps -emit-reference-dependencies-path %t/2.swiftdeps
+//
+// RUN cmp -s %t/1.swiftdeps %t/2.swiftdeps