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Diffstat (limited to 'unit-tests/dollar.mk')
-rw-r--r-- | unit-tests/dollar.mk | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/unit-tests/dollar.mk b/unit-tests/dollar.mk new file mode 100644 index 000000000000..b7f7d9fa7c9e --- /dev/null +++ b/unit-tests/dollar.mk @@ -0,0 +1,81 @@ +# $NetBSD: dollar.mk,v 1.3 2020/05/17 09:37:48 rillig Exp $ +# +# Test the various places where a dollar character can appear and +# see what happens. There are lots of surprises here. +# + +LIST= plain 'single' "double" 'mix'"ed" back\ slashed +WORD= word + +DOLLAR1= $ +DOLLAR2= $$ +DOLLAR4= $$$$ + +X= VAR_X +DOLLAR_XY= $$XY +DOLLAR_AXY= $$AXY + +H= @header() { printf '\n%s\n\n' "$$*"; }; header +T= @testcase() { printf '%23s => <%s>\n' "$$@"; }; testcase +C= @comment() { printf '%s\n' "$$*"; }; comment + +# These variable values are not accessed. +# The trailing dollar in the '1 dollar literal eol' test case accesses +# the empty variable instead, which is always guaranteed to be empty. +${:U }= space-var-value +${:U${.newline}}= newline-var-value +# But this one is accessed. +${:U'}= single-quote-var-value' + +all: + $H 'Printing dollar from literals and variables' + + $C 'To survive the parser, a dollar character must be doubled.' + $T '1 dollar literal' '$' + $T '1 dollar literal eol' ''$ + $T '2 dollar literal' '$$' + $T '4 dollar literal' '$$$$' + + $C 'Some hungry part of make eats all the dollars after a :U modifier.' + $T '1 dollar default' ''${:U$:Q} + $T '2 dollar default' ''${:U$$:Q} + $T '4 dollar default' ''${:U$$$$:Q} + + $C 'This works as expected.' + $T '1 dollar variable' ''${DOLLAR1:Q} + $T '2 dollar variable' ''${DOLLAR2:Q} + $T '4 dollar variable' ''${DOLLAR4:Q} + + $C 'Some hungry part of make eats all the dollars after a :U modifier.' + $T '1 dollar var-default' ''${:U${DOLLAR1}:Q} + $T '2 dollar var-default' ''${:U${DOLLAR2}:Q} + $T '4 dollar var-default' ''${:U${DOLLAR4}:Q} + + $H 'Dollar in :S pattern' + + $T 'S,$$,word,' ''${DOLLAR_XY:S,$,word,:Q} + $T 'S,$$X,word,' ''${DOLLAR_XY:S,$X,word,:Q} + $T 'S,$$$$X,word,' ''${DOLLAR_XY:S,$$X,word,:Q} + $T 'S,$$$$$$X,word,' ''${DOLLAR_XY:S,$$$X,word,:Q} + + $T 'S,$$X,replaced,' ''${X:S,$X,replaced,:Q} + $T 'S,$$$$X,replaced,' ''${X:S,$$X,replaced,:Q} + $T 'S,$$$$$$X,replaced,' ''${X:S,$$$X,replaced,:Q} + + $H 'Dollar in :C character class' + + $C 'The A is replaced because the $$$$ is reduced to a single $$,' + $C 'which is then resolved to the variable X with the value VAR_X.' + $C 'The effective character class becomes [VAR_XY].' + $T 'C,[$$$$XY],<&>,g' ''${DOLLAR_AXY:C,[$$XY],<&>,g:Q} + + $H 'Dollar in :C pattern' + $C 'For some reason, multiple dollars are folded into one.' + $T 'C,$$,dollar,g' ''${DOLLAR:C,$,dollar,g:Q} + $T 'C,$$$$,dollar,g' ''${DOLLAR:C,$$,dollar,g:Q} + + $H 'Dollar in :S replacement' + $C 'For some reason, multiple dollars are folded into one.' + $T 'S,word,a$$Xo,' ''${WORD:S,word,a$Xo,:Q} + $T 'S,word,a$$$$Xo,' ''${WORD:S,word,a$$Xo,:Q} + $T 'S,word,a$$$$$$Xo,' ''${WORD:S,word,a$$$Xo,:Q} |