import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

build/pymake/tests/var-set.mk

@@ -0,0 +1,55 @@
+#T commandline: ['OBASIC=oval']
+
+BASIC = val
+
+TEST = $(TEST)
+
+TEST2 = $(TES
+TEST2 += T)
+
+TES T = val
+
+RECVAR = foo
+RECVAR += var baz 
+
+IMMVAR := bloo
+IMMVAR += $(RECVAR)
+
+BASIC ?= notval
+
+all: BASIC = valall
+all: RECVAR += $(BASIC)
+all: IMMVAR += $(BASIC)
+all: UNSET += more
+all: OBASIC += allmore
+
+CHECKLIT = $(NULL) check
+all: CHECKLIT += appendliteral
+
+RECVAR = blimey
+
+TESTEMPTY = \
+	$(NULL)
+
+all: other
+	test "$(TEST2)" = "val"
+	test '$(value TEST2)' = '$$(TES T)'
+	test "$(RECVAR)" = "blimey valall"
+	test "$(IMMVAR)" = "bloo foo var baz  valall"
+	test "$(UNSET)" = "more"
+	test "$(OBASIC)" = "oval"
+	test "$(CHECKLIT)" = " check appendliteral"
+	test "$(TESTEMPTY)" = ""
+	@echo TEST-PASS
+
+OVAR = oval
+OVAR ?= onotval
+
+other: OVAR ?= ooval
+other: LATERVAR ?= lateroverride
+
+LATERVAR = olater
+
+other:
+	test "$(OVAR)" = "oval"
+	test "$(LATERVAR)" = "lateroverride"