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d220fbcd1d
qemu/tests/qapi-schema/qapi-schema-test.out
Eric Blake d220fbcd1d qapi: Test for various name collisions 
Expose some weaknesses in the generator: we don't always forbid
the generation of structs that contain multiple members that map
to the same C or QMP name.  This has already been marked FIXME in
qapi.py in commit d90675f, but having more tests will make sure
future patches produce desired behavior; and updating existing
patches to better document things doesn't hurt, either.  Some of
these collisions are already caught in the old-style parser
checks, but ultimately we want all collisions to be caught in the
new-style QAPISchema*.check() methods.

This patch focuses on C struct members, and does not consider
collisions between commands and events (affecting C function
names), or even collisions between generated C type names with
user type names (for things like automatic FOOList struct
representing array types or FOOKind for an implicit enum).

There are two types of struct collisions we want to catch:
 1) Collision between two keys in a JSON object. qapi.py prevents
    that within a single struct (see test duplicate-key), but it is
    possible to have collisions between a type's members and its
    base type's members (existing tests struct-base-clash,
    struct-base-clash-deep), and its flat union variant members
    (renamed test flat-union-clash-member).
 2) Collision between two members of the C struct that is generated
    for a given QAPI type:
    a) Multiple QAPI names map to the same C name (new test
       args-name-clash)
    b) A QAPI name maps to a C name that is used for another purpose
       (new tests flat-union-clash-branch, struct-base-clash-base,
       union-clash-data). We already fixed some such cases in commit
       0f61af3e and 1e6c1616, but more remain.
    c) Two C names generated for other purposes clash
       (updated test alternate-clash, new test union-clash-branches,
       union-clash-type, flat-union-clash-type)

Ultimately, if we need to have a flat union where a tag value
clashes with a base member name, we could change the generator to
name the union (using 'foo.u.value' rather than 'foo.value') or
otherwise munge the C name corresponding to tag values.  But
unless such a need arises, it will probably be easier to just
forbid these collisions.

Some of these negative tests will be deleted later, and positive
tests added to qapi-schema-test.json in their place, when the
generator code is reworked to avoid particular code generation
collisions in class 2).

[Note that viewing this patch with git rename detection enabled
may see some confusion due to renaming some tests while adding
others, but where the content is similar enough that git picks
the wrong pre- and post-patch files to associate]

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-6-git-send-email-eblake@redhat.com>
[Improve commit message and comments a bit, drop an unrelated test]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-10-12 18:44:54 +02:00

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object :empty
object :obj-EVENT_C-arg
member a: int optional=True
member b: UserDefOne optional=True
member c: str optional=False
object :obj-EVENT_D-arg
member a: EventStructOne optional=False
member b: str optional=False
member c: str optional=True
member enum3: EnumOne optional=True
object :obj-__org.qemu_x-command-arg
member a: __org.qemu_x-EnumList optional=False
member b: __org.qemu_x-StructList optional=False
member c: __org.qemu_x-Union2 optional=False
member d: __org.qemu_x-Alt optional=False
object :obj-anyList-wrapper
member data: anyList optional=False
object :obj-boolList-wrapper
member data: boolList optional=False
object :obj-guest-sync-arg
member arg: any optional=False
object :obj-int16List-wrapper
member data: int16List optional=False
object :obj-int32List-wrapper
member data: int32List optional=False
object :obj-int64List-wrapper
member data: int64List optional=False
object :obj-int8List-wrapper
member data: int8List optional=False
object :obj-intList-wrapper
member data: intList optional=False
object :obj-numberList-wrapper
member data: numberList optional=False
object :obj-sizeList-wrapper
member data: sizeList optional=False
object :obj-str-wrapper
member data: str optional=False
object :obj-strList-wrapper
member data: strList optional=False
object :obj-uint16List-wrapper
member data: uint16List optional=False
object :obj-uint32List-wrapper
member data: uint32List optional=False
object :obj-uint64List-wrapper
member data: uint64List optional=False
object :obj-uint8List-wrapper
member data: uint8List optional=False
object :obj-user_def_cmd1-arg
member ud1a: UserDefOne optional=False
object :obj-user_def_cmd2-arg
member ud1a: UserDefOne optional=False
member ud1b: UserDefOne optional=True
object :obj-user_def_cmd3-arg
member a: int optional=False
member b: int optional=True
event EVENT_A None
event EVENT_B None
event EVENT_C :obj-EVENT_C-arg
event EVENT_D :obj-EVENT_D-arg
enum EnumOne ['value1', 'value2', 'value3']
object EventStructOne
member struct1: UserDefOne optional=False
member string: str optional=False
member enum2: EnumOne optional=True
object NestedEnumsOne
member enum1: EnumOne optional=False
member enum2: EnumOne optional=True
member enum3: EnumOne optional=False
member enum4: EnumOne optional=True
enum QEnumTwo ['value1', 'value2']
prefix QENUM_TWO
object UserDefA
member boolean: bool optional=False
member a_b: int optional=True
alternate UserDefAlternate
case uda: UserDefA
case s: str
case i: int
enum UserDefAlternateKind ['uda', 's', 'i']
object UserDefB
member intb: int optional=False
member a-b: bool optional=True
object UserDefC
member string1: str optional=False
member string2: str optional=False
object UserDefFlatUnion
base UserDefUnionBase
tag enum1
case value1: UserDefA
case value2: UserDefB
case value3: UserDefB
object UserDefFlatUnion2
base UserDefUnionBase
tag enum1
case value1: UserDefC
case value2: UserDefB
case value3: UserDefA
object UserDefNativeListUnion
case integer: :obj-intList-wrapper
case s8: :obj-int8List-wrapper
case s16: :obj-int16List-wrapper
case s32: :obj-int32List-wrapper
case s64: :obj-int64List-wrapper
case u8: :obj-uint8List-wrapper
case u16: :obj-uint16List-wrapper
case u32: :obj-uint32List-wrapper
case u64: :obj-uint64List-wrapper
case number: :obj-numberList-wrapper
case boolean: :obj-boolList-wrapper
case string: :obj-strList-wrapper
case sizes: :obj-sizeList-wrapper
case any: :obj-anyList-wrapper
enum UserDefNativeListUnionKind ['integer', 's8', 's16', 's32', 's64', 'u8', 'u16', 'u32', 'u64', 'number', 'boolean', 'string', 'sizes', 'any']
object UserDefOne
base UserDefZero
member string: str optional=False
member enum1: EnumOne optional=True
object UserDefOptions
member i64: intList optional=True
member u64: uint64List optional=True
member u16: uint16List optional=True
member i64x: int optional=True
member u64x: uint64 optional=True
object UserDefTwo
member string0: str optional=False
member dict1: UserDefTwoDict optional=False
object UserDefTwoDict
member string1: str optional=False
member dict2: UserDefTwoDictDict optional=False
member dict3: UserDefTwoDictDict optional=True
object UserDefTwoDictDict
member userdef: UserDefOne optional=False
member string: str optional=False
object UserDefUnionBase
base UserDefZero
member string: str optional=False
member enum1: EnumOne optional=False
object UserDefZero
member integer: int optional=False
event __ORG.QEMU_X-EVENT __org.qemu_x-Struct
alternate __org.qemu_x-Alt
case __org.qemu_x-branch: str
case b: __org.qemu_x-Base
enum __org.qemu_x-AltKind ['__org.qemu_x-branch', 'b']
object __org.qemu_x-Base
member __org.qemu_x-member1: __org.qemu_x-Enum optional=False
enum __org.qemu_x-Enum ['__org.qemu_x-value']
object __org.qemu_x-Struct
base __org.qemu_x-Base
member __org.qemu_x-member2: str optional=False
object __org.qemu_x-Struct2
member array: __org.qemu_x-Union1List optional=False
object __org.qemu_x-Union1
case __org.qemu_x-branch: :obj-str-wrapper
enum __org.qemu_x-Union1Kind ['__org.qemu_x-branch']
object __org.qemu_x-Union2
base __org.qemu_x-Base
tag __org.qemu_x-member1
case __org.qemu_x-value: __org.qemu_x-Struct2
command __org.qemu_x-command :obj-__org.qemu_x-command-arg -> __org.qemu_x-Union1
gen=True success_response=True
command guest-sync :obj-guest-sync-arg -> any
gen=True success_response=True
command user_def_cmd None -> None
gen=True success_response=True
command user_def_cmd1 :obj-user_def_cmd1-arg -> None
gen=True success_response=True
command user_def_cmd2 :obj-user_def_cmd2-arg -> UserDefTwo
gen=True success_response=True
command user_def_cmd3 :obj-user_def_cmd3-arg -> int
gen=True success_response=True
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