path: root/common/natspec/natspec_test.go

package natspec

import (
    "testing"
)

func TestNotice(t *testing.T) {

    tx := `
    {
    "jsonrpc": "2.0",
    "method": "eth_call",
    "params": [{
        "to": "0x8521742d3f456bd237e312d6e30724960f72517a",
        "data": "0xc6888fa1000000000000000000000000000000000000000000000000000000000000007a"
    }],
    "id": 6
  }
    `

    abi := `
    [{
    "name": "multiply",
    "constant": false,
    "type": "function",
    "inputs": [{
      "name": "a",
      "type": "uint256"
    }],
    "outputs": [{
      "name": "d",
      "type": "uint256"
    }]
  }]
    `

    desc := "Will multiply `a` by 7 and return `a * 7`."

    method := "multiply"

    ns, err := New()
    if err != nil {
        t.Errorf("NewNATSpec error %v", err)
    }

    notice, err := ns.Notice(tx, abi, method, desc)

    if err != nil {
        t.Errorf("expected no error got %v", err)
    }

    expected := "Will multiply 122 by 7 and return 854."
    if notice != expected {
        t.Errorf("incorrect notice. expected %v, got %v", expected, notice)
    } else {
        t.Logf("returned notice \"%v\"", notice)
    }

    notice, err = ns.Notice(tx, abi, method, "Will multiply 122 by \"7\" and return 854.")

    expected = "natspec.js error setting expression: (anonymous): Line 1:41 Unexpected number"

    if err == nil {
        t.Errorf("expected error, got nothing (notice: '%v')", err, notice)
    } else {
        if err.Error() != expected {
            t.Errorf("expected error '%s' got '%v' (notice: '%v')", expected, err, notice)
        }
    }

    // https://github.com/ethereum/natspec.js/issues/1
    badDesc := "Will multiply `e` by 7 and return `a * 7`."
    notice, err = ns.Notice(tx, abi, method, badDesc)

    expected = "natspec.js error evaluating expression: Natspec evaluation failed, wrong input params"

    if err == nil {
        t.Errorf("expected error, got nothing (notice: '%v')", notice)
    } else {
        if err.Error() != expected {
            t.Errorf("expected error '%s' got '%v' (notice: '%v')", expected, err, notice)
        }
    }

    notice, err = ns.Notice(tx, abi, "missing_method", desc)

    expected = "natspec.js error evaluating expression: Natspec evaluation failed, method does not exist"

    if err == nil {
        t.Errorf("expected error, got nothing (notice: '%v')", notice)
    } else {
        if err.Error() != expected {
            t.Errorf("expected error '%s' got '%v' (notice: '%v')", expected, err, notice)
        }
    }

}