src/tests/fidl/conformance_suite/union.gidl

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

success("UnionWithBoundString") {
    value = UnionWithBoundStringStruct{
        v: UnionWithBoundString{
            boundFiveStr: "abcd",
        },
    },
    bytes = {
        v1 = [
            // primary object
            num(1):8, // ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope

            // secondary object 1: union
            num(4):8, repeat(0xff):8, // boundFiveStr size, present

            // secondary object 2: boundFiveStr
            'a', 'b', 'c', 'd', padding:4,
        ],
        v2 = [
            // primary object
            num(1):8, // ordinal
            num(24):4, num(0):2, num(0):2, // envelope

            // secondary object 1: union
            num(4):8, repeat(0xff):8, // boundFiveStr size, present

            // secondary object 2: boundFiveStr
            'a', 'b', 'c', 'd', padding:4,
        ],
    },
}

encode_failure("UnionWithBoundString_ExceedsBounds") {
    // TODO(fxbug.dev/37304) Enforce size bounds in rust
    bindings_denylist = [rust],
    value = UnionWithBoundStringStruct{
        v: UnionWithBoundString{
            boundFiveStr: "abcdef",
        },
    },
    err = STRING_TOO_LONG,
}

success("UnionMigration_SingleVariant") {
    value = SingleVariantUnionStruct{
        u: SingleVariantUnion{
            x: 42,
        },
    },
    bytes = {
        v1 = [
            // primary object
            num(1):8, // ordinal
            num(8):4, num(0):4, repeat(0xff):8, // envelope

            // secondary object 1: x
            num(42):4, padding:4,
        ],
        v2 = [
            // primary object
            num(1):8, // ordinal
            num(42):4, num(0):2, num(1):2, // envelope
        ],
    },
}

success("UnionMigration_Uint8Union_1") {
    value = Uint8UnionStruct{
        u: Uint8Union{
            uint8_value: 42,
        },
    },
    bytes = {
        v1 = [
            // primary object
            num(1):8, // ordinal
            num(8):4, num(0):4, repeat(0xff):8, // envelope

            // secondary object 1: uint8_value
            num(42):1, padding:7,
        ],
        v2 = [
            // primary object
            num(1):8, // ordinal
            num(42):4, num(0):2, num(1):2, // envelope
        ],
    },
}

success("UnionMigration_Uint8Union_2") {
    value = Uint8UnionStruct{
        u: Uint8Union{
            empty_struct: EmptyStruct{},
        },
    },
    bytes = {
        v1 = [
            // primary object
            num(2):8, // ordinal
            num(8):4, num(0):4, repeat(0xff):8, // envelope

            // secondary object 1: uint8_value
            num(0):1, padding:7,
        ],
        v2 = [
            // primary object
            num(2):8, // ordinal
            num(0):4, num(0):2, num(1):2, // envelope
        ],
    },
}

success("ReverseOrdinalUnion") {
    value = ReverseOrdinalUnionStruct{
        u: ReverseOrdinalUnion{
            x: 42,
        },
    },
    bytes = {
        v1 = [
            // primary object
            num(4):8, // ordinal
            num(8):4, num(0):4, repeat(0xff):8, // envelope

            // secondary object 1: x
            num(42):8,
        ],
        v2 = [
            // primary object
            num(4):8, // ordinal
            num(8):4, num(0):2, num(0):2, // envelope

            // secondary object 1: x
            num(42):8,
        ],
    },
}

// Regression test for fxbug.dev/72895.
decode_failure("UnionWithInvalidPresenceIndicator") {
    type = XUnionWithStructStruct,
    bytes = {
        v1 = [
            0xd2, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ordinal
            0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 bytes, 0 handles
            0xd8, 0x09, 0x00, 0x0d, 0xc4, 0x00, 0x00, 0x00, // invalid pointer
            0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab,
            0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab,
            0xab, 0xab, 0xab, 0xab, 0x00, 0x00, 0x00, 0x00,
        ],
        // No test for v2 because there no longer is presence indicator.
    },
    err = INVALID_PRESENCE_INDICATOR,
}

// ======================== UNKNOWN VARIANT TESTS ==========================

success("FlexibleUnionUnknownValue") {
    // llcpp is tested by hand since it cannot construct unknown unions (and
    // they do not store bytes & handles), see fxr/423117
    bindings_denylist = [llcpp],
    value = TestFlexibleXUnionInStruct{
        xu: SampleXUnion{
            1234: {
                // padding must be included in the raw bytes
                bytes = [repeat(0xab):20, padding:4],
            },
        },
    },
    bytes = {
        v1 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(0):2, num(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
}

success("FlexibleResourceUnionUnknownValue") {
    // llcpp is tested by hand since it cannot construct unknown unions (and
    // they do not store bytes & handles), see fxr/423117
    bindings_denylist = [llcpp],
    value = TestFlexibleResourceXUnionInStruct{
        xu: SampleResourceXUnion{
            1234: {
                // padding must be included in the raw bytes
                bytes = [repeat(0xab):20, padding:4],
            },
        },
    },
    bytes = {
        v1 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(0):2, num(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
}

success("FlexibleResourceUnionUnknownValueWithHandles") {
    // llcpp is tested by hand since it cannot construct unknown unions (and
    // they do not store bytes & handles), see fxr/423117
    bindings_denylist = [llcpp],
    handle_defs = {
        #0 = event(),
        #1 = event(),
        #2 = channel(),
        #3 = channel(),
    },
    value = TestFlexibleResourceXUnionInStruct{
        xu: SampleResourceXUnion{
            1234: {
                // padding must be included in the raw bytes
                bytes = [repeat(0xab):20, padding:4],
                handles = [#0, #1, #2, #3],
            },
        },
    },
    bytes = {
        v1 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(4):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(4):2, num(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    handles = {
        v1, v2 = [
            #0, #1, #2, #3,
        ],
    },
}

decode_failure("StrictUnionUnknownValue") {
    type = TestStrictXUnionInStruct,
    bytes = {
        v1 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(0):2, num(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = STRICT_UNION_UNKNOWN_FIELD,
}

decode_failure("StrictUnionUnknownValueWithHandles") {
    handle_defs = {
        #0 = event(),
        #1 = event(),
        #2 = channel(),
        #3 = channel(),
    },
    type = TestStrictXUnionInStruct,
    bytes = {
        v1 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(4):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(4):2, num(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    handles = {
        v1, v2 = [
            #0, #1, #2, #3,
        ],
    },
    err = STRICT_UNION_UNKNOWN_FIELD,
}

decode_failure("FlexibleUnionUnknownValueWithHandles") {
    // C, LLCPP and HLCPP do not store handles, so they do not fail when decoding unknown
    // handles for a value type.
    bindings_denylist = [c, llcpp, hlcpp],
    handle_defs = {
        #0 = event(),
        #1 = event(),
        #2 = channel(),
        #3 = channel(),
    },
    type = TestFlexibleXUnionInStruct,
    bytes = {
        v1 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(4):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(1234):8, // unknown ordinal
            num(24):4, num(4):2, num(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    handles = {
        v1, v2 = [
            #0, #1, #2, #3,
        ],
    },
    err = NON_RESOURCE_UNKNOWN_HANDLES,
}

encode_failure("StrictUnionUnknownValue") {
    // Currently no bindings allow constructing a strict union with an unknown variant
    bindings_allowlist = [],
    value = TestStrictXUnionInStruct{
        xu: SampleStrictXUnion{
            1234: {
                // padding must be included in the raw bytes
                bytes = [repeat(0xab):20, padding:4],
            },
        },
    },
    err = STRICT_UNION_UNKNOWN_FIELD,
}

decode_failure("FlexibleValueUnionUnknownBytesNonMultipleOf8") {
    type = TestFlexibleXUnionInStruct,
    bytes = {
        v1 = [
            num(123):8, // ordinal (unknown)
            num(20):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(123):8, // ordinal (unknown)
            num(20):4, num(0):2, num(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = INVALID_NUM_BYTES_IN_ENVELOPE,
}

decode_failure("FlexibleResourceUnionUnknownBytesNonMultipleOf8") {
    type = TestFlexibleResourceXUnionInStruct,
    bytes = {
        v1 = [
            num(123):8, // ordinal (unknown)
            num(20):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(123):8, // ordinal (unknown)
            num(20):4, num(0):2, num(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = INVALID_NUM_BYTES_IN_ENVELOPE,
}

success("UnionEnvelopeInlining_SmallValue_Inlined") {
    value = EnvelopeInliningTestUnionStruct{
        u: EnvelopeInliningTestUnion{
            small: 100,
        },
    },
    bytes = {
        v1 = [
            // primary object
            num(1):8, // ordinal
            num(8):4, num(0):4, repeat(0xff):8, // envelope

            // secondary object
            num(100):4, padding:4,
        ],
        v2 = [
            // primary object
            num(1):8, // ordinal
            num(100):4, num(0):2, num(1):2, // inlined envelope
        ],
    },
}

success("UnionEnvelopeInlining_LargeValue_Outlined") {
    value = EnvelopeInliningTestUnionStruct{
        u: EnvelopeInliningTestUnion{
            large: 100,
        },
    },
    bytes = {
        v1 = [
            // primary object
            num(2):8, // ordinal
            num(8):4, num(0):4, repeat(0xff):8, // envelope

            // secondary object
            num(100):8,
        ],
        v2 = [
            // primary object
            num(2):8, // ordinal
            num(8):4, num(0):2, num(0):2, // present

            // secondary object
            num(100):8,
        ],
    },
}

decode_failure("UnionEnvelopeInlining_SmallValue_BadInlineMarkerLower") {
    type = EnvelopeInliningTestUnionStruct,
    bytes = {
        v2 = [
            // primary object
            num(1):8, // ordinal
            num(100):4, num(0):2, 0xff, 0x00, // inlined envelope
        ],
    },
    err = INVALID_INLINE_MARKER_IN_ENVELOPE,
}

decode_failure("UnionEnvelopeInlining_SmallValue_BadInlineMarkerUpper") {
    type = EnvelopeInliningTestUnionStruct,
    bytes = {
        v2 = [
            // primary object
            num(1):8, // ordinal
            num(100):4, num(0):2, 0x01, 0xee, // inlined envelope
        ],
    },
    err = INVALID_INLINE_MARKER_IN_ENVELOPE,
}

decode_failure("UnionEnvelopeInlining_LargeValue_BadOutlinedMarker") {
    type = EnvelopeInliningTestUnionStruct,
    bytes = {
        v2 = [
            // primary object
            num(2):8, // ordinal

            // 0xfe, 0xff is an inline marker with only the inline bit unset.
            num(8):4, num(0):2, 0xfe, 0xff,

            // secondary object
            num(100):8,
        ],
    },
    err = INVALID_INLINE_MARKER_IN_ENVELOPE,
}

success("UnionEnvelopeInlining_HandleValue_Inlined") {
    handle_defs = {
        #0 = event(),
    },
    value = EnvelopeInliningTestUnionStruct{
        u: EnvelopeInliningTestUnion{
            handle: #0,
        },
    },
    bytes = {
        v1 = [
            // primary object
            num(3):8, // ordinal
            num(8):4, num(1):4, repeat(0xff):8, // envelope

            // secondary object
            repeat(0xff):4, padding:4,
        ],
        v2 = [
            // primary object
            num(3):8, // ordinal
            repeat(0xff):4, num(1):2, num(1):2, // inlined envelope
        ],
    },
    handles = {
        v1, v2 = [#0],
    },
}

success("UnionEnvelopeInlining_UnknownSmallValue_Inlined") {
    bindings_allowlist = [go, rust],
    value = EnvelopeInliningTestUnionStruct{
        u: EnvelopeInliningTestUnion{
            10: {
                bytes = [num(100):4],
            },
        },
    },
    bytes = {
        v2 = [
            // primary object
            num(10):8, // ordinal
            num(100):4, num(0):2, num(1):2, // inlined envelope
        ],
    },
}

success("UnionEnvelopeInlining_UnknownLargeValue_Outlined") {
    bindings_allowlist = [go, rust],
    value = EnvelopeInliningTestUnionStruct{
        u: EnvelopeInliningTestUnion{
            10: {
                bytes = [num(100):8],
            },
        },
    },
    bytes = {
        v2 = [
            // primary object
            num(10):8, // ordinal
            num(8):4, num(0):2, num(0):2, // present

            // secondary object
            num(100):8,
        ],
    },
}

success("UnionEnvelopeInlining_UnknownHandleValue_Inlined") {
    bindings_allowlist = [go, rust],
    handle_defs = {
        #0 = event(),
    },
    value = EnvelopeInliningTestUnionStruct{
        u: EnvelopeInliningTestUnion{
            10: {
                bytes = [repeat(0xff):4],
                handles = [#0],
            },
        },
    },
    bytes = {
        v2 = [
            // primary object
            num(10):8, // ordinal
            repeat(0xff):4, num(1):2, num(1):2, // inlined envelope
        ],
    },
    handles = {
        v2 = [#0],
    },
}

// Tests decode of a value in a union that can be represented inline in the
// envelope but is incorrectly using the out of line representation.
decode_failure("UnionOutOfLineEnvelopeWhenInlineRequired") {
    type = EnvelopeInliningTestUnionStruct,
    bytes = {
        v2 = [
            // primary object
            num(1):8, // ordinal
            num(8):4, num(0):2, num(0):2, // present

            // secondary object
            num(100):8,
        ],
    },
    err = INVALID_INLINE_BIT_IN_ENVELOPE,
}

// Tests decode of a value in a union that can be represented out of line in
// the envelope but is incorrectly using the inline representation.
decode_failure("UnionInlineEnvelopeWhenOutOfLineRequired") {
    type = EnvelopeInliningTestUnionStruct,
    bytes = {
        v2 = [
            // primary object
            num(2):8, // ordinal
            num(8):4, num(0):2, num(1):2, // present
        ],
    },
    err = INVALID_INLINE_BIT_IN_ENVELOPE,
}

encode_failure("RequiredFlexibleValueUnionZeroOrdinalNoPayload") {
    // C and LLCPP cannot construct unknown variants.
    bindings_denylist = [c, llcpp],
    value = TestFlexibleXUnionInStruct{
        xu: SampleXUnion{
            0: {
                bytes = [],
            },
        },
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("RequiredFlexibleValueUnionZeroOrdinalWithPayload") {
    // C and LLCPP cannot construct unknown variants.
    bindings_denylist = [c, llcpp],
    value = TestFlexibleXUnionInStruct{
        xu: SampleXUnion{
            0: {
                bytes = [repeat(0xab):20, padding:4],
            },
        },
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("RequiredFlexibleResourceUnionZeroOrdinalNoPayload") {
    // C and LLCPP cannot construct unknown variants.
    bindings_denylist = [c, llcpp],
    value = TestFlexibleResourceXUnionInStruct{
        xu: SampleResourceXUnion{
            0: {
                bytes = [],
            },
        },
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("RequiredFlexibleResourceUnionZeroOrdinalWithPayload") {
    // C and LLCPP cannot construct unknown variants.
    bindings_denylist = [c, llcpp],
    value = TestFlexibleResourceXUnionInStruct{
        xu: SampleResourceXUnion{
            0: {
                bytes = [repeat(0xab):20, padding:4],
            },
        },
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("OptionalFlexibleValueUnionZeroOrdinalWithPayload") {
    // C and LLCPP cannot construct unknown variants.
    bindings_denylist = [c, llcpp],
    value = TestOptionalFlexibleXUnionInStruct{
        xu: SampleXUnion{
            0: {
                bytes = [repeat(0xab):20, padding:4],
            },
        },
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("OptionalFlexibleResourceUnionZeroOrdinalWithPayload") {
    // C and LLCPP cannot construct unknown variants.
    bindings_denylist = [c, llcpp],
    value = TestOptionalFlexibleResourceXUnionInStruct{
        xu: SampleResourceXUnion{
            0: {
                bytes = [repeat(0xab):20, padding:4],
            },
        },
    },
    err = UNION_FIELD_NOT_SET,
}

decode_failure("RequiredStrictValueUnionZeroOrdinalNoPayload") {
    type = TestStrictXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):4, repeat(0x00):8, // envelope
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):2, repeat(0):2, // envelope
        ],
    },
    err = NON_NULLABLE_TYPE_WITH_NULL_VALUE,
}

decode_failure("RequiredStrictValueUnionZeroOrdinalWithPayload") {
    type = TestStrictXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):2, repeat(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = UNION_FIELD_NOT_SET,
}

decode_failure("RequiredStrictResourceUnionZeroOrdinalNoPayload") {
    type = TestStrictResourceXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):4, repeat(0x00):8, // envelope
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):2, repeat(0):2, // envelope
        ],
    },
    err = NON_NULLABLE_TYPE_WITH_NULL_VALUE,
}

decode_failure("RequiredStrictResourceUnionZeroOrdinalWithPayload") {
    type = TestStrictResourceXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):2, repeat(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = UNION_FIELD_NOT_SET,
}

decode_failure("RequiredFlexibleValueUnionZeroOrdinalNoPayload") {
    type = TestFlexibleXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):4, repeat(0x00):8, // envelope
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):2, repeat(0):2, // envelope
        ],
    },
    err = NON_NULLABLE_TYPE_WITH_NULL_VALUE,
}

decode_failure("RequiredFlexibleValueUnionZeroOrdinalWithPayload") {
    type = TestFlexibleXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):2, repeat(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = UNION_FIELD_NOT_SET,
}

decode_failure("RequiredFlexibleResourceUnionZeroOrdinalNoPayload") {
    type = TestFlexibleResourceXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):4, repeat(0x00):8, // envelope
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):2, repeat(0):2, // envelope
        ],
    },
    err = NON_NULLABLE_TYPE_WITH_NULL_VALUE,
}

decode_failure("RequiredFlexibleResourceUnionZeroOrdinalWithPayload") {
    type = TestFlexibleResourceXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):2, repeat(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = UNION_FIELD_NOT_SET,
}

success("OptionalStrictValueUnionZeroOrdinalNoPayload") {
    value = TestOptionalStrictXUnionInStruct{
        xu: null,
    },
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):4, repeat(0x00):8, // envelope
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):2, repeat(0):2, // envelope
        ],
    },
}

decode_failure("OptionalStrictValueUnionZeroOrdinalWithPayload") {
    type = TestOptionalStrictXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):2, repeat(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = UNION_FIELD_NOT_SET,
}

success("OptionalStrictResourceUnionZeroOrdinalNoPayload") {
    value = TestOptionalStrictResourceXUnionInStruct{
        xu: null,
    },
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):4, repeat(0x00):8, // envelope
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):2, repeat(0):2, // envelope
        ],
    },
}

decode_failure("OptionalStrictResourceUnionZeroOrdinalWithPayload") {
    type = TestOptionalStrictResourceXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):2, repeat(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = UNION_FIELD_NOT_SET,
}

success("OptionalFlexibleValueUnionZeroOrdinalNoPayload") {
    value = TestOptionalFlexibleXUnionInStruct{
        xu: null,
    },
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):4, repeat(0x00):8, // envelope
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):2, repeat(0):2, // envelope
        ],
    },
}

decode_failure("OptionalFlexibleValueUnionZeroOrdinalWithPayload") {
    type = TestOptionalFlexibleXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):2, repeat(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = UNION_FIELD_NOT_SET,
}

success("OptionalFlexibleResourceUnionZeroOrdinalNoPayload") {
    value = TestOptionalFlexibleResourceXUnionInStruct{
        xu: null,
    },
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):4, repeat(0x00):8, // envelope
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(0):4, num(0):2, repeat(0):2, // envelope
        ],
    },
}

decode_failure("OptionalFlexibleResourceUnionZeroOrdinalWithPayload") {
    type = TestOptionalFlexibleResourceXUnionInStruct,
    bytes = {
        v1 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):4, repeat(0xff):8, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
        v2 = [
            num(0):8, // zero ordinal
            num(24):4, num(0):2, repeat(0):2, // envelope
            repeat(0xab):20, padding:4, // unknown bytes
        ],
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("RequiredStrictValueUnionDefaultInitialized") {
    bindings_allowlist = [go, llcpp, hlcpp],
    value = TestStrictXUnionInStruct{
        xu: SampleStrictXUnion{},
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("RequiredStrictResourceUnionDefaultInitialized") {
    bindings_allowlist = [go, llcpp, hlcpp],
    value = TestStrictResourceXUnionInStruct{
        xu: SampleStrictResourceXUnion{},
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("RequiredFlexibleValueUnionDefaultInitialized") {
    bindings_allowlist = [go, llcpp, hlcpp],
    value = TestFlexibleXUnionInStruct{
        xu: SampleXUnion{},
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("RequiredFlexibleResourceUnionDefaultInitialized") {
    bindings_allowlist = [go, llcpp, hlcpp],
    value = TestFlexibleResourceXUnionInStruct{
        xu: SampleResourceXUnion{},
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("OptionalStrictValueUnionDefaultInitialized") {
    // TODO(fxbug.dev/7805): Enable in HLCPP and LLCPP.
    bindings_allowlist = [go],
    value = TestOptionalStrictXUnionInStruct{
        xu: SampleStrictXUnion{},
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("OptionalStrictResourceUnionDefaultInitialized") {
    // TODO(fxbug.dev/7805): Enable in HLCPP and LLCPP.
    bindings_allowlist = [go],
    value = TestOptionalStrictResourceXUnionInStruct{
        xu: SampleStrictResourceXUnion{},
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("OptionalFlexibleValueUnionDefaultInitialized") {
    // TODO(fxbug.dev/7805): Enable in HLCPP, LLCPP.
    bindings_allowlist = [go],
    value = TestOptionalFlexibleXUnionInStruct{
        xu: SampleXUnion{},
    },
    err = UNION_FIELD_NOT_SET,
}

encode_failure("OptionalFlexibleResourceUnionDefaultInitialized") {
    // TODO(fxbug.dev/7805): Enable in HLCPP, LLCPP.
    bindings_allowlist = [go],
    value = TestOptionalFlexibleResourceXUnionInStruct{
        xu: SampleResourceXUnion{},
    },
    err = UNION_FIELD_NOT_SET,
}

decode_failure("EnvelopeByteCountExceedsMessageByteCount") {
    // TODO(fxbug.dev/88704) Fix in Rust.
    // TODO(fxbug.dev/88705) Fix in Dart.
    bindings_denylist = [rust, dart],
    type = EnvelopeInliningTestUnionStruct,
    bytes = {
        v2 = [
            num(100):8, // unknown
            num(8):4, num(0):2, repeat(0):2,
        ],
    },
    err = ENVELOPE_BYTES_EXCEED_MESSAGE_LENGTH,
}

decode_failure("EnvelopeHandleCountExceedsMessageHandleCount") {
    // TODO(fxbug.dev/88705) Fix in Dart.
    // TODO(fxbug.dev/100924) Fix in Go.
    bindings_denylist = [dart, go],
    type = EnvelopeInliningTestUnionStruct,
    bytes = {
        v2 = [
            num(1):8, // small
            num(0):4, num(1):2, num(1):2,
        ],
    },
    err = ENVELOPE_HANDLES_EXCEED_MESSAGE_LENGTH,
}

decode_failure("EnvelopeHandleCountExceedsMessageHandleCountUnknown") {
    // TODO(fxbug.dev/88704) Fix in Rust.
    // TODO(fxbug.dev/88705) Fix in Dart.
    bindings_denylist = [rust, dart],
    type = EnvelopeInliningTestUnionStruct,
    bytes = {
        v2 = [
            num(100):8, // unknown
            num(0):4, num(1):2, repeat(0):2,
        ],
    },
    err = ENVELOPE_HANDLES_EXCEED_MESSAGE_LENGTH,
}