1 files changed, 58 insertions, 0 deletions
diff --git a/unit-tests/dir.mk b/unit-tests/dir.mk
new file mode 100644
index 0000000000000..f5926375312e0
--- /dev/null
+++ b/unit-tests/dir.mk
@@ -0,0 +1,58 @@
+# $NetBSD: dir.mk,v 1.4 2020/07/31 20:16:21 rillig Exp $
+#
+# Tests for dir.c.
+
+# Dependency lines may use braces for expansion.
+all: {one,two,three}
+
+one:
+	@echo 1
+two:
+	@echo 2
+three:
+	@echo 3
+
+# The braces may start in the middle of a word.
+all: f{our,ive}
+
+four:
+	@echo 4
+five:
+	@echo 5
+six:
+	@echo 6
+
+# But nested braces don't work.
+all: {{thi,fou}r,fif}teen
+
+thirteen:
+	@echo 13
+fourteen:
+	@echo 14
+fifteen:
+	@echo 15
+
+# There may be multiple brace groups side by side.
+all: {pre-,}{patch,configure}
+
+pre-patch patch pre-configure configure:
+	@echo $@
+
+# Empty pieces are allowed in the braces.
+all: {fetch,extract}{,-post}
+
+fetch fetch-post extract extract-post:
+	@echo $@
+
+# The expansions may have duplicates.
+# These are merged together because of the dependency line.
+all: dup-{1,1,1,1,1,1,1}
+
+dup-1:
+	@echo $@
+
+# Other than in Bash, the braces are also expanded if there is no comma.
+all: {{{{{{{{{{single-word}}}}}}}}}}
+
+single-word:
+	@echo $@