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James Henderson
583ccd4384
Prior to this change, there was no clean way of getting FileCheck to
check that a line is completely empty. The expected way of using
"CHECK: {{^$}}" does not work because the '^' matches the end of the
previous match (this behaviour may be desirable in certain instances).
For the same reason, "CHECK-NEXT: {{^$}}" will fail when the previous
match was at the end of the line, as the pattern will match there.
Using the recommended [[:space:]] to match an explicit new line could
also match a space, and thus is not always desired. Literal '\n'
matches also do not work. A workaround was suggested in the review, but
it is a little clunky.
This change adds a new directive that behaves the same as CHECK-NEXT,
except that it only matches against empty lines (nothing, not even
whitespace, is allowed). As with CHECK-NEXT, it will fail if more than
one newline occurs before the next blank line. Example usage:
; test.txt
foo
bar
; CHECK: foo
; CHECK-EMPTY:
; CHECK-NEXT: bar
Differential Revision: https://reviews.llvm.org/D28896
Reviewed by: probinson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335613 91177308-0d34-0410-b5e6-96231b3b80d8
45 lines
1.7 KiB
Plaintext
45 lines
1.7 KiB
Plaintext
; basic functionality
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; RUN: FileCheck %s --input-file %s --check-prefix=CHECK1
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foo
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bar
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CHECK1: foo
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CHECK1-EMPTY:
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CHECK1-NEXT: bar
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; next line must be blank
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; RUN: not FileCheck %s --input-file %s --check-prefix=CHECK2A 2>&1 | FileCheck %s --check-prefix=CHECK2B
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badger
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CHECK2A: badger
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CHECK2A-EMPTY:
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CHECK2B: CHECK2A-EMPTY: is not on the line after the previous match
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; CHECK-EMPTY must have empty pattern
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; RUN: not FileCheck %s --input-file %s --check-prefix=CHECK3A 2>&1 | FileCheck %s --check-prefix=CHECK3B
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CHECK3A: foo
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CHECK3A-EMPTY: this is not empty
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CHECK3B: found non-empty check string for empty check with prefix 'CHECK3A:'
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; CHECK-EMPTY cannot be the first check
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; RUN: not FileCheck %s --input-file %s --check-prefix=CHECK4A 2>&1 | FileCheck %s --check-prefix=CHECK4B
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CHECK4A-EMPTY:
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CHECK4B: found 'CHECK4A-EMPTY' without previous 'CHECK4A: line
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; CHECK-EMPTY-NOT and CHECK-NOT-EMPTY rejected
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; RUN: not FileCheck %s --input-file %s --check-prefixes=CHECK5A 2>&1 | FileCheck %s --check-prefix=CHECK5C
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; RUN: not FileCheck %s --input-file %s --check-prefixes=CHECK5B 2>&1 | FileCheck %s --check-prefix=CHECK5C
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CHECK5A-EMPTY-NOT:
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CHECK5B-NOT-EMPTY:
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CHECK5C: unsupported -NOT combo on prefix 'CHECK5{{A|B}}'
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; whitespace does not count as empty
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; RUN: not FileCheck %s --input-file %s --check-prefix=CHECK6A --match-full-lines 2>&1 | FileCheck %s --check-prefix=CHECK6B
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CHECK6A: the next line has spaces
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CHECK6A-EMPTY:
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CHECK6B: expected string not found in input
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; ***don't add any further blank lines after this point***
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; CHECK-EMPTY, like CHECK-NEXT, will report an error if the first matching
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; line is not the line immediately following the previous check.
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the next line has spaces
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