kconfig: test: add Kconfig macro language tests

Here are the test cases I used for developing the text expansion feature.

Masahiro Yamada committed 8 years ago

Commit 2bece881 parent 316d55d13 files · +191 −0Browse files

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13 files

@@ -0,0 +1,27 @@
	1	+# SPDX-License-Identifier: GPL-2.0
	2	+
	3	+# 'info' prints the argument to stdout.
	4	+$(info,hello world 0)
	5	+
	6	+# 'warning-if', if the first argument is y, sends the second argument to stderr,
	7	+# and the message is prefixed with the current file name and line number.
	8	+$(warning-if,y,hello world 1)
	9	+
	10	+# 'error-if' is similar, but it terminates the parsing immediately.
	11	+# The following is just no-op since the first argument is not y.
	12	+$(error-if,n,this should not be printed)
	13	+
	14	+# Shorthand
	15	+warning = $(warning-if,y,$(1))
	16	+
	17	+# 'shell' executes a command, and returns its stdout.
	18	+$(warning,$(shell,echo hello world 3))
	19	+
	20	+# Every newline in the output is replaced with a space,
	21	+# but any trailing newlines are deleted.
	22	+$(warning,$(shell,printf 'hello\nworld\n\n4\n\n\n'))
	23	+
	24	+# 'filename' is expanded to the currently parsed file name,
	25	+# 'lineno' to the line number.
	26	+$(warning,filename=$(filename))
	27	+$(warning,lineno=$(lineno))

@@ -0,0 +1,9 @@
	1	+# SPDX-License-Identifier: GPL-2.0
	2	+"""
	3	+Built-in function tests.
	4	+"""
	5	+
	6	+def test(conf):
	7	+ assert conf.oldaskconfig() == 0
	8	+ assert conf.stdout_contains('expected_stdout')
	9	+ assert conf.stderr_matches('expected_stderr')

@@ -0,0 +1 @@
	1	+hello world 0

@@ -0,0 +1,11 @@
	1	+# SPDX-License-Identifier: GPL-2.0
	2	+"""
	3	+Detect circular variable expansion.
	4	+
	5	+If a recursively expanded variable references itself (eventually),
	6	+it should fail with an error message.
	7	+"""
	8	+
	9	+def test(conf):
	10	+ assert conf.oldaskconfig() != 0
	11	+ assert conf.stderr_matches('expected_stderr')

@@ -0,0 +1 @@
	1	+Kconfig:5: Recursive variable 'X' references itself (eventually)

@@ -0,0 +1,44 @@
	1	+# SPDX-License-Identifier: GPL-2.0
	2	+
	3	+# Shorthand
	4	+warning = $(warning-if,y,$(1))
	5	+
	6	+# You can not pass commas directly to a function since they are treated as
	7	+# delimiters. You can use the following trick to do so.
	8	+comma := ,
	9	+$(warning,hello$(comma) world)
	10	+
	11	+# Like Make, single quotes, double quotes, spaces are treated verbatim.
	12	+# The following prints the text as-is.
	13	+$(warning, ' " '" ' ''' "'")
	14	+
	15	+# Unlike Make, '$' has special meaning only when it is followed by '('.
	16	+# No need to escape '$' itself.
	17	+$(warning,$)
	18	+$(warning,$$)
	19	+$ := 1
	20	+$(warning,$($))
	21	+
	22	+# You need a trick to escape '$' followed by '('
	23	+# The following should print "$(X)". It should not be expanded further.
	24	+dollar := $
	25	+$(warning,$(dollar)(X))
	26	+
	27	+# You need a trick to treat unbalanced parentheses.
	28	+# The following should print "(".
	29	+left_paren := (
	30	+$(warning,$(left_paren))
	31	+
	32	+# A simple expanded should not be expanded multiple times.
	33	+# The following should print "$(X)". It should not be expanded further.
	34	+Y := $(dollar)(X)
	35	+$(warning,$(Y))
	36	+
	37	+# The following should print "$(X)" as well.
	38	+Y = $(dollar)(X)
	39	+$(warning,$(Y))
	40	+
	41	+# The following should print "$(".
	42	+# It should not be emit "unterminated reference" error.
	43	+unterminated := $(dollar)(
	44	+$(warning,$(unterminated))

@@ -0,0 +1,8 @@
	1	+# SPDX-License-Identifier: GPL-2.0
	2	+"""
	3	+Escape sequence tests.
	4	+"""
	5	+
	6	+def test(conf):
	7	+ assert conf.oldaskconfig() == 0
	8	+ assert conf.stderr_matches('expected_stderr')

@@ -0,0 +1,53 @@
	1	+# SPDX-License-Identifier: GPL-2.0
	2	+
	3	+# Shorthand
	4	+warning = $(warning-if,y,$(1))
	5	+
	6	+# Simply expanded variable.
	7	+X := 1
	8	+SIMPLE := $(X)
	9	+X := 2
	10	+$(warning,SIMPLE = $(SIMPLE))
	11	+
	12	+# Recursively expanded variable.
	13	+X := 1
	14	+RECURSIVE = $(X)
	15	+X := 2
	16	+$(warning,RECURSIVE = $(RECURSIVE))
	17	+
	18	+# Append something to a simply expanded variable.
	19	+Y := 3
	20	+SIMPLE += $(Y)
	21	+Y := 4
	22	+$(warning,SIMPLE = $(SIMPLE))
	23	+
	24	+# Append something to a recursively expanded variable.
	25	+Y := 3
	26	+RECURSIVE += $(Y)
	27	+Y := 4
	28	+$(warning,RECURSIVE = $(RECURSIVE))
	29	+
	30	+# Use += operator to an undefined variable.
	31	+# This works as a recursively expanded variable.
	32	+Y := 3
	33	+UNDEFINED_VARIABLE += $(Y)
	34	+Y := 4
	35	+$(warning,UNDEFINED_VARIABLE = $(UNDEFINED_VARIABLE))
	36	+
	37	+# You can use variable references for the lefthand side of assignment statement.
	38	+X := A
	39	+Y := B
	40	+$(X)$(Y) := 5
	41	+$(warning,AB = $(AB))
	42	+
	43	+# User-defined function.
	44	+greeting = $(1), my name is $(2).
	45	+$(warning,$(greeting,Hello,John))
	46	+
	47	+# The number of arguments is not checked for user-defined functions.
	48	+# If some arguments are optional, it is useful to pass fewer parameters.
	49	+# $(2) will be blank in this case.
	50	+$(warning,$(greeting,Hello))
	51	+
	52	+# Unreferenced parameters are just ignored.
	53	+$(warning,$(greeting,Hello,John,ignored,ignored))

@@ -0,0 +1,8 @@
	1	+# SPDX-License-Identifier: GPL-2.0
	2	+"""
	3	+Variable and user-defined function tests.
	4	+"""
	5	+
	6	+def test(conf):
	7	+ assert conf.oldaskconfig() == 0
	8	+ assert conf.stderr_matches('expected_stderr')