github.com/tetratelabs/wazero@v1.7.1/internal/integration_test/spectest/v2/testdata/imports.wast

;; Auxiliary module to import from

(module
  (func (export "func"))
  (func (export "func-i32") (param i32))
  (func (export "func-f32") (param f32))
  (func (export "func->i32") (result i32) (i32.const 22))
  (func (export "func->f32") (result f32) (f32.const 11))
  (func (export "func-i32->i32") (param i32) (result i32) (local.get 0))
  (func (export "func-i64->i64") (param i64) (result i64) (local.get 0))
  (global (export "global-i32") i32 (i32.const 55))
  (global (export "global-f32") f32 (f32.const 44))
  (global (export "global-mut-i64") (mut i64) (i64.const 66))
  (table (export "table-10-inf") 10 funcref)
  (table (export "table-10-20") 10 20 funcref)
  (memory (export "memory-2-inf") 2)
  ;; Multiple memories are not yet supported
  ;; (memory (export "memory-2-4") 2 4)
)

(register "test")


;; Functions

(module
  (type $func_i32 (func (param i32)))
  (type $func_i64 (func (param i64)))
  (type $func_f32 (func (param f32)))
  (type $func_f64 (func (param f64)))

  (import "spectest" "print_i32" (func (param i32)))
  (func (import "spectest" "print_i64") (param i64))
  (import "spectest" "print_i32" (func $print_i32 (param i32)))
  (import "spectest" "print_i64" (func $print_i64 (param i64)))
  (import "spectest" "print_f32" (func $print_f32 (param f32)))
  (import "spectest" "print_f64" (func $print_f64 (param f64)))
  (import "spectest" "print_i32_f32" (func $print_i32_f32 (param i32 f32)))
  (import "spectest" "print_f64_f64" (func $print_f64_f64 (param f64 f64)))
  (func $print_i32-2 (import "spectest" "print_i32") (param i32))
  (func $print_f64-2 (import "spectest" "print_f64") (param f64))
  (import "test" "func-i64->i64" (func $i64->i64 (param i64) (result i64)))

  (func (export "p1") (import "spectest" "print_i32") (param i32))
  (func $p (export "p2") (import "spectest" "print_i32") (param i32))
  (func (export "p3") (export "p4") (import "spectest" "print_i32") (param i32))
  (func (export "p5") (import "spectest" "print_i32") (type 0))
  (func (export "p6") (import "spectest" "print_i32") (type 0) (param i32) (result))

  (import "spectest" "print_i32" (func (type $forward)))
  (func (import "spectest" "print_i32") (type $forward))
  (type $forward (func (param i32)))

  (table funcref (elem $print_i32 $print_f64))

  (func (export "print32") (param $i i32)
    (local $x f32)
    (local.set $x (f32.convert_i32_s (local.get $i)))
    (call 0 (local.get $i))
    (call $print_i32_f32
      (i32.add (local.get $i) (i32.const 1))
      (f32.const 42)
    )
    (call $print_i32 (local.get $i))
    (call $print_i32-2 (local.get $i))
    (call $print_f32 (local.get $x))
    (call_indirect (type $func_i32) (local.get $i) (i32.const 0))
  )

  (func (export "print64") (param $i i64)
    (local $x f64)
    (local.set $x (f64.convert_i64_s (call $i64->i64 (local.get $i))))
    (call 1 (local.get $i))
    (call $print_f64_f64
      (f64.add (local.get $x) (f64.const 1))
      (f64.const 53)
    )
    (call $print_i64 (local.get $i))
    (call $print_f64 (local.get $x))
    (call $print_f64-2 (local.get $x))
    (call_indirect (type $func_f64) (local.get $x) (i32.const 1))
  )
)

(assert_return (invoke "print32" (i32.const 13)))
(assert_return (invoke "print64" (i64.const 24)))

(assert_invalid
  (module 
    (type (func (result i32)))
    (import "test" "func" (func (type 1)))
  )
  "unknown type"
)

;; Export sharing name with import
(module
  (import "spectest" "print_i32" (func $imported_print (param i32)))
  (func (export "print_i32") (param $i i32)
    (call $imported_print (local.get $i))
  )
)

(assert_return (invoke "print_i32" (i32.const 13)))

;; Export sharing name with import
(module
  (import "spectest" "print_i32" (func $imported_print (param i32)))
  (func (export "print_i32") (param $i i32) (param $j i32) (result i32)
    (i32.add (local.get $i) (local.get $j))
  )
)

(assert_return (invoke "print_i32" (i32.const 5) (i32.const 11)) (i32.const 16))

(module (import "test" "func" (func)))
(module (import "test" "func-i32" (func (param i32))))
(module (import "test" "func-f32" (func (param f32))))
(module (import "test" "func->i32" (func (result i32))))
(module (import "test" "func->f32" (func (result f32))))
(module (import "test" "func-i32->i32" (func (param i32) (result i32))))
(module (import "test" "func-i64->i64" (func (param i64) (result i64))))

(assert_unlinkable
  (module (import "test" "unknown" (func)))
  "unknown import"
)
(assert_unlinkable
  (module (import "spectest" "unknown" (func)))
  "unknown import"
)

(assert_unlinkable
  (module (import "test" "func" (func (param i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func" (func (result i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func" (func (param i32) (result i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func-i32" (func)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func-i32" (func (result i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func-i32" (func (param f32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func-i32" (func (param i64))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func-i32" (func (param i32) (result i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func->i32" (func)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func->i32" (func (param i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func->i32" (func (result f32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func->i32" (func (result i64))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func->i32" (func (param i32) (result i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func-i32->i32" (func)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func-i32->i32" (func (param i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "func-i32->i32" (func (result i32))))
  "incompatible import type"
)

(assert_unlinkable
  (module (import "test" "global-i32" (func (result i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "table-10-inf" (func)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "memory-2-inf" (func)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "global_i32" (func)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "table" (func)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "memory" (func)))
  "incompatible import type"
)


;; Globals

(module
  (import "spectest" "global_i32" (global i32))
  (global (import "spectest" "global_i32") i32)

  (import "spectest" "global_i32" (global $x i32))
  (global $y (import "spectest" "global_i32") i32)

  (import "spectest" "global_i64" (global i64))
  (import "spectest" "global_f32" (global f32))
  (import "spectest" "global_f64" (global f64))

  (func (export "get-0") (result i32) (global.get 0))
  (func (export "get-1") (result i32) (global.get 1))
  (func (export "get-x") (result i32) (global.get $x))
  (func (export "get-y") (result i32) (global.get $y))
  (func (export "get-4") (result i64) (global.get 4))
  (func (export "get-5") (result f32) (global.get 5))
  (func (export "get-6") (result f64) (global.get 6))
)

(assert_return (invoke "get-0") (i32.const 666))
(assert_return (invoke "get-1") (i32.const 666))
(assert_return (invoke "get-x") (i32.const 666))
(assert_return (invoke "get-y") (i32.const 666))
(assert_return (invoke "get-4") (i64.const 666))
(assert_return (invoke "get-5") (f32.const 666.6))
(assert_return (invoke "get-6") (f64.const 666.6))

(module (import "test" "global-i32" (global i32)))
(module (import "test" "global-f32" (global f32)))
(module (import "test" "global-mut-i64" (global (mut i64))))

(assert_unlinkable
  (module (import "test" "unknown" (global i32)))
  "unknown import"
)
(assert_unlinkable
  (module (import "spectest" "unknown" (global i32)))
  "unknown import"
)

(assert_unlinkable
  (module (import "test" "global-i32" (global i64)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-i32" (global f32)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-i32" (global f64)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-i32" (global (mut i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-f32" (global i32)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-f32" (global i64)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-f32" (global f64)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-f32" (global (mut f32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-mut-i64" (global (mut i32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-mut-i64" (global (mut f32))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-mut-i64" (global (mut f64))))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-mut-i64" (global i64)))
  "incompatible import type"
)

(assert_unlinkable
  (module (import "test" "func" (global i32)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "table-10-inf" (global i32)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "memory-2-inf" (global i32)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "print_i32" (global i32)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "table" (global i32)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "memory" (global i32)))
  "incompatible import type"
)


;; Tables

(module
  (type (func (result i32)))
  (import "spectest" "table" (table $tab 10 20 funcref))
  (elem (table $tab) (i32.const 1) func $f $g)

  (func (export "call") (param i32) (result i32)
    (call_indirect $tab (type 0) (local.get 0))
  )
  (func $f (result i32) (i32.const 11))
  (func $g (result i32) (i32.const 22))
)

(assert_trap (invoke "call" (i32.const 0)) "uninitialized element")
(assert_return (invoke "call" (i32.const 1)) (i32.const 11))
(assert_return (invoke "call" (i32.const 2)) (i32.const 22))
(assert_trap (invoke "call" (i32.const 3)) "uninitialized element")
(assert_trap (invoke "call" (i32.const 100)) "undefined element")


(module
  (type (func (result i32)))
  (table $tab (import "spectest" "table") 10 20 funcref)
  (elem (table $tab) (i32.const 1) func $f $g)

  (func (export "call") (param i32) (result i32)
    (call_indirect $tab (type 0) (local.get 0))
  )
  (func $f (result i32) (i32.const 11))
  (func $g (result i32) (i32.const 22))
)

(assert_trap (invoke "call" (i32.const 0)) "uninitialized element")
(assert_return (invoke "call" (i32.const 1)) (i32.const 11))
(assert_return (invoke "call" (i32.const 2)) (i32.const 22))
(assert_trap (invoke "call" (i32.const 3)) "uninitialized element")
(assert_trap (invoke "call" (i32.const 100)) "undefined element")


(module
  (import "spectest" "table" (table 0 funcref))
  (import "spectest" "table" (table 0 funcref))
  (table 10 funcref)
  (table 10 funcref)
)

(module (import "test" "table-10-inf" (table 10 funcref)))
(module (import "test" "table-10-inf" (table 5 funcref)))
(module (import "test" "table-10-inf" (table 0 funcref)))
(module (import "test" "table-10-20" (table 10 funcref)))
(module (import "test" "table-10-20" (table 5 funcref)))
(module (import "test" "table-10-20" (table 0 funcref)))
(module (import "test" "table-10-20" (table 10 20 funcref)))
(module (import "test" "table-10-20" (table 5 20 funcref)))
(module (import "test" "table-10-20" (table 0 20 funcref)))
(module (import "test" "table-10-20" (table 10 25 funcref)))
(module (import "test" "table-10-20" (table 5 25 funcref)))
(module (import "test" "table-10-20" (table 0 25 funcref)))
(module (import "spectest" "table" (table 10 funcref)))
(module (import "spectest" "table" (table 5 funcref)))
(module (import "spectest" "table" (table 0 funcref)))
(module (import "spectest" "table" (table 10 20 funcref)))
(module (import "spectest" "table" (table 5 20 funcref)))
(module (import "spectest" "table" (table 0 20 funcref)))
(module (import "spectest" "table" (table 10 25 funcref)))
(module (import "spectest" "table" (table 5 25 funcref)))

(assert_unlinkable
  (module (import "test" "unknown" (table 10 funcref)))
  "unknown import"
)
(assert_unlinkable
  (module (import "spectest" "unknown" (table 10 funcref)))
  "unknown import"
)

(assert_unlinkable
  (module (import "test" "table-10-inf" (table 12 funcref)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "table-10-inf" (table 10 20 funcref)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "table-10-20" (table 12 20 funcref)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "table-10-20" (table 10 18 funcref)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "table" (table 12 funcref)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "table" (table 10 15 funcref)))
  "incompatible import type"
)

(assert_unlinkable
  (module (import "test" "func" (table 10 funcref)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-i32" (table 10 funcref)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "memory-2-inf" (table 10 funcref)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "print_i32" (table 10 funcref)))
  "incompatible import type"
)



;; Memories

(module
  (import "spectest" "memory" (memory 1 2))
  (data (memory 0) (i32.const 10) "\10")

  (func (export "load") (param i32) (result i32) (i32.load (local.get 0)))
)

(assert_return (invoke "load" (i32.const 0)) (i32.const 0))
(assert_return (invoke "load" (i32.const 10)) (i32.const 16))
(assert_return (invoke "load" (i32.const 8)) (i32.const 0x100000))
(assert_trap (invoke "load" (i32.const 1000000)) "out of bounds memory access")

(module
  (memory (import "spectest" "memory") 1 2)
  (data (memory 0) (i32.const 10) "\10")

  (func (export "load") (param i32) (result i32) (i32.load (local.get 0)))
)
(assert_return (invoke "load" (i32.const 0)) (i32.const 0))
(assert_return (invoke "load" (i32.const 10)) (i32.const 16))
(assert_return (invoke "load" (i32.const 8)) (i32.const 0x100000))
(assert_trap (invoke "load" (i32.const 1000000)) "out of bounds memory access")

(assert_invalid
  (module (import "" "" (memory 1)) (import "" "" (memory 1)))
  "multiple memories"
)
(assert_invalid
  (module (import "" "" (memory 1)) (memory 0))
  "multiple memories"
)
(assert_invalid
  (module (memory 0) (memory 0))
  "multiple memories"
)

(module (import "test" "memory-2-inf" (memory 2)))
(module (import "test" "memory-2-inf" (memory 1)))
(module (import "test" "memory-2-inf" (memory 0)))
(module (import "spectest" "memory" (memory 1)))
(module (import "spectest" "memory" (memory 0)))
(module (import "spectest" "memory" (memory 1 2)))
(module (import "spectest" "memory" (memory 0 2)))
(module (import "spectest" "memory" (memory 1 3)))
(module (import "spectest" "memory" (memory 0 3)))

(assert_unlinkable
  (module (import "test" "unknown" (memory 1)))
  "unknown import"
)
(assert_unlinkable
  (module (import "spectest" "unknown" (memory 1)))
  "unknown import"
)

(assert_unlinkable
  (module (import "test" "memory-2-inf" (memory 3)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "memory-2-inf" (memory 2 3)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "memory" (memory 2)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "memory" (memory 1 1)))
  "incompatible import type"
)

(assert_unlinkable
  (module (import "test" "func-i32" (memory 1)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "global-i32" (memory 1)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "test" "table-10-inf" (memory 1)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "print_i32" (memory 1)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "global_i32" (memory 1)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "table" (memory 1)))
  "incompatible import type"
)

(assert_unlinkable
  (module (import "spectest" "memory" (memory 2)))
  "incompatible import type"
)
(assert_unlinkable
  (module (import "spectest" "memory" (memory 1 1)))
  "incompatible import type"
)

(module
  (import "spectest" "memory" (memory 0 3))  ;; actual has max size 2
  (func (export "grow") (param i32) (result i32) (memory.grow (local.get 0)))
)
(assert_return (invoke "grow" (i32.const 0)) (i32.const 1))
(assert_return (invoke "grow" (i32.const 1)) (i32.const 1))
(assert_return (invoke "grow" (i32.const 0)) (i32.const 2))
(assert_return (invoke "grow" (i32.const 1)) (i32.const -1))
(assert_return (invoke "grow" (i32.const 0)) (i32.const 2))

(module $Mgm
  (memory (export "memory") 1) ;; initial size is 1
  (func (export "grow") (result i32) (memory.grow (i32.const 1)))
)
(register "grown-memory" $Mgm)
(assert_return (invoke $Mgm "grow") (i32.const 1)) ;; now size is 2
(module $Mgim1
  ;; imported memory limits should match, because external memory size is 2 now
  (memory (export "memory") (import "grown-memory" "memory") 2) 
  (func (export "grow") (result i32) (memory.grow (i32.const 1)))
)
(register "grown-imported-memory" $Mgim1)
(assert_return (invoke $Mgim1 "grow") (i32.const 2)) ;; now size is 3
(module $Mgim2
  ;; imported memory limits should match, because external memory size is 3 now
  (import "grown-imported-memory" "memory" (memory 3))
  (func (export "size") (result i32) (memory.size))
)
(assert_return (invoke $Mgim2 "size") (i32.const 3))


;; Syntax errors

(assert_malformed
  (module quote "(func) (import \"\" \"\" (func))")
  "import after function"
)
(assert_malformed
  (module quote "(func) (import \"\" \"\" (global i64))")
  "import after function"
)
(assert_malformed
  (module quote "(func) (import \"\" \"\" (table 0 funcref))")
  "import after function"
)
(assert_malformed
  (module quote "(func) (import \"\" \"\" (memory 0))")
  "import after function"
)

(assert_malformed
  (module quote "(global i64 (i64.const 0)) (import \"\" \"\" (func))")
  "import after global"
)
(assert_malformed
  (module quote "(global i64 (i64.const 0)) (import \"\" \"\" (global f32))")
  "import after global"
)
(assert_malformed
  (module quote "(global i64 (i64.const 0)) (import \"\" \"\" (table 0 funcref))")
  "import after global"
)
(assert_malformed
  (module quote "(global i64 (i64.const 0)) (import \"\" \"\" (memory 0))")
  "import after global"
)

(assert_malformed
  (module quote "(table 0 funcref) (import \"\" \"\" (func))")
  "import after table"
)
(assert_malformed
  (module quote "(table 0 funcref) (import \"\" \"\" (global i32))")
  "import after table"
)
(assert_malformed
  (module quote "(table 0 funcref) (import \"\" \"\" (table 0 funcref))")
  "import after table"
)
(assert_malformed
  (module quote "(table 0 funcref) (import \"\" \"\" (memory 0))")
  "import after table"
)

(assert_malformed
  (module quote "(memory 0) (import \"\" \"\" (func))")
  "import after memory"
)
(assert_malformed
  (module quote "(memory 0) (import \"\" \"\" (global i32))")
  "import after memory"
)
(assert_malformed
  (module quote "(memory 0) (import \"\" \"\" (table 1 3 funcref))")
  "import after memory"
)
(assert_malformed
  (module quote "(memory 0) (import \"\" \"\" (memory 1 2))")
  "import after memory"
)

;; This module is required to validate, regardless of whether it can be
;; linked. Overloading is not possible in wasm itself, but it is possible
;; in modules from which wasm can import.
(module)
(register "not wasm")
(assert_unlinkable
  (module
    (import "not wasm" "overloaded" (func))
    (import "not wasm" "overloaded" (func (param i32)))
    (import "not wasm" "overloaded" (func (param i32 i32)))
    (import "not wasm" "overloaded" (func (param i64)))
    (import "not wasm" "overloaded" (func (param f32)))
    (import "not wasm" "overloaded" (func (param f64)))
    (import "not wasm" "overloaded" (func (result i32)))
    (import "not wasm" "overloaded" (func (result i64)))
    (import "not wasm" "overloaded" (func (result f32)))
    (import "not wasm" "overloaded" (func (result f64)))
    (import "not wasm" "overloaded" (global i32))
    (import "not wasm" "overloaded" (global i64))
    (import "not wasm" "overloaded" (global f32))
    (import "not wasm" "overloaded" (global f64))
    (import "not wasm" "overloaded" (table 0 funcref))
    (import "not wasm" "overloaded" (memory 0))
  )
  "unknown import"
)