(module binary
  "\00asm" "\01\00\00\00"
  "\00\24\10" "a custom section" "this is the payload"
  "\00\20\10" "a custom section" "this is payload"
  "\00\11\10" "a custom section" ""
  "\00\10\00" "" "this is payload"
  "\00\01\00" "" ""
  "\00\24\10" "\00\00custom sectio\00" "this is the payload"
  "\00\24\10" "\ef\bb\bfa custom sect" "this is the payload"
  "\00\24\10" "a custom sect\e2\8c\a3" "this is the payload"
  "\00\1f\16" "module within a module" "\00asm" "\01\00\00\00"
)

(module binary
  "\00asm" "\01\00\00\00"
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\01\01\00"  ;; type section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\02\01\00"  ;; import section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\03\01\00"  ;; function section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\04\01\00"  ;; table section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\05\01\00"  ;; memory section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\06\01\00"  ;; global section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\07\01\00"  ;; export section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\09\01\00"  ;; element section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\0a\01\00"  ;; code section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
  "\0b\01\00"  ;; data section
  "\00\0e\06" "custom" "payload"
  "\00\0e\06" "custom" "payload"
)

(module binary
  "\00asm" "\01\00\00\00"
  "\01\07\01\60\02\7f\7f\01\7f"                ;; type section
  "\00\1a\06" "custom" "this is the payload"   ;; custom section
  "\03\02\01\00"                               ;; function section
  "\07\0a\01\06\61\64\64\54\77\6f\00\00"       ;; export section
  "\0a\09\01\07\00\20\00\20\01\6a\0b"          ;; code section
  "\00\1b\07" "custom2" "this is the payload"  ;; custom section
)

(assert_malformed
  (module binary
    "\00asm" "\01\00\00\00"
    "\00"
  )
  "unexpected end"
)

(assert_malformed
  (module binary
    "\00asm" "\01\00\00\00"
    "\00\00"
  )
  "unexpected end"
)

(assert_malformed
  (module binary
    "\00asm" "\01\00\00\00"
    "\00\00\00\05\01\00\07\00\00"
  )
  "unexpected end"
)

(assert_malformed
  (module binary
    "\00asm" "\01\00\00\00"
    "\00\26\10" "a custom section" "this is the payload"
  )
  "unexpected end"
)

(assert_malformed
  (module binary
    "\00asm" "\01\00\00\00"
    "\00\25\10" "a custom section" "this is the payload"
    "\00\24\10" "a custom section" "this is the payload"
  )
  "malformed section id"
)

(assert_malformed
  (module binary
    "\00asm" "\01\00\00\00"
    "\01\07\01\60\02\7f\7f\01\7f"                         ;; type section
    "\00\25\10" "a custom section" "this is the payload"  ;; wrong length!
    "\03\02\01\00"                                        ;; function section
    "\0a\09\01\07\00\20\00\20\01\6a\0b"                   ;; code section
    "\00\1b\07" "custom2" "this is the payload"           ;; custom section
  )
  "function and code section have inconsistent lengths"
)

;; Test concatenated modules.
(assert_malformed
  (module binary
    "\00asm\01\00\00\00"
    "\00asm\01\00\00\00"
  )
  "length out of bounds"
)

(assert_malformed
  (module binary
    "\00asm" "\01\00\00\00"
    "\05\03\01\00\01"                         ;; memory section
    "\0c\01\02"                               ;; data count section (2 segments)
    "\0b\06\01\00\41\00\0b\00"                ;; data section (1 segment)
  )
  "data count and data section have inconsistent lengths"
)