web3 0.3.0

Ethereum JSON-RPC client.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152

pub use ethereum_types::{U64, U128, U256, H64, H128, H160, H256, H512, H520, H1024, Bloom as H2048};

#[cfg(test)]
mod tests {
  use super::{H128, U256};
  use serde_json;

  type Res = Result<U256, serde_json::Error>;

  #[test]
  fn should_compare_correctly() {
    let mut arr = [0u8; 32];
    arr[31] = 0;
    arr[30] = 15;
    arr[29] = 1;
    arr[28] = 0;
    arr[27] = 10;
    let a = U256::from(arr.as_ref());
    arr[27] = 9;
    let b = U256::from(arr.as_ref());
    let c = U256::from(0);
    let d = U256::from(10_000);

    assert!(b < a);
    assert!(d < a);
    assert!(d < b);
    assert!(c < a);
    assert!(c < b);
    assert!(c < d);
  }

  #[test]
  fn should_display_correctly() {
    let mut arr = [0u8; 32];
    arr[31] = 0;
    arr[30] = 15;
    arr[29] = 1;
    arr[28] = 0;
    arr[27] = 10;
    let a = U256::from(arr.as_ref());
    let b = U256::from(1023);
    let c = U256::from(0);
    let d = U256::from(10000);

    // Debug
    assert_eq!(&format!("{:?}", a), "0xa00010f00");
    assert_eq!(&format!("{:?}", b), "0x3ff");
    assert_eq!(&format!("{:?}", c), "0x0");
    assert_eq!(&format!("{:?}", d), "0x2710");

    // Display
    assert_eq!(&format!("{}", a), "42949742336");
    assert_eq!(&format!("{}", b), "1023");
    assert_eq!(&format!("{}", c), "0");
    assert_eq!(&format!("{}", d), "10000");

    // Lowerhex
    assert_eq!(&format!("{:x}", a), "a00010f00");
    assert_eq!(&format!("{:x}", b), "3ff");
    assert_eq!(&format!("{:x}", c), "0");
    assert_eq!(&format!("{:x}", d), "2710");
  }

  #[test]
  fn should_display_hash_correctly() {
    let mut arr = [0; 16];
    arr[15] = 0;
    arr[14] = 15;
    arr[13] = 1;
    arr[12] = 0;
    arr[11] = 10;
    let a = H128::from(arr);
    let b = H128::from(1023);
    let c = H128::from(0);
    let d = H128::from(10000);

    // Debug
    assert_eq!(&format!("{:?}", a), "0x00000000000000000000000a00010f00");
    assert_eq!(&format!("{:?}", b), "0x000000000000000000000000000003ff");
    assert_eq!(&format!("{:?}", c), "0x00000000000000000000000000000000");
    assert_eq!(&format!("{:?}", d), "0x00000000000000000000000000002710");

    // Display
    assert_eq!(&format!("{}", a), "0x0000…0f00");
    assert_eq!(&format!("{}", b), "0x0000…03ff");
    assert_eq!(&format!("{}", c), "0x0000…0000");
    assert_eq!(&format!("{}", d), "0x0000…2710");

    // Lowerhex
    assert_eq!(&format!("{:x}", a), "00000000000000000000000a00010f00");
    assert_eq!(&format!("{:x}", b), "000000000000000000000000000003ff");
    assert_eq!(&format!("{:x}", c), "00000000000000000000000000000000");
    assert_eq!(&format!("{:x}", d), "00000000000000000000000000002710");
  }

  #[test]
  fn should_deserialize_hash_correctly() {
    let deserialized1: H128 = serde_json::from_str(r#""0x00000000000000000000000a00010f00""#).unwrap();

    assert_eq!(deserialized1, 0xa00010f00.into());
  }

  #[test]
  fn should_serialize_u256() {
    let serialized1 = serde_json::to_string(&U256::from(0)).unwrap();
    let serialized2 = serde_json::to_string(&U256::from(1)).unwrap();
    let serialized3 = serde_json::to_string(&U256::from(16)).unwrap();
    let serialized4 = serde_json::to_string(&U256::from(256)).unwrap();

    assert_eq!(serialized1, r#""0x0""#);
    assert_eq!(serialized2, r#""0x1""#);
    assert_eq!(serialized3, r#""0x10""#);
    assert_eq!(serialized4, r#""0x100""#);
  }

  #[test]
  fn should_fail_to_deserialize_decimals() {
    let deserialized1: Res = serde_json::from_str(r#""""#);
    let deserialized2: Res = serde_json::from_str(r#""0""#);
    let deserialized3: Res = serde_json::from_str(r#""10""#);
    let deserialized4: Res = serde_json::from_str(r#""1000000""#);
    let deserialized5: Res = serde_json::from_str(r#""1000000000000000000""#);

    assert!(deserialized1.is_err());
    assert!(deserialized2.is_err());
    assert!(deserialized3.is_err());
    assert!(deserialized4.is_err());
    assert!(deserialized5.is_err());
  }

  #[test]
  fn should_deserialize_u256() {
    let deserialized1: Result<U256, _> = serde_json::from_str(r#""0x""#);
    let deserialized2: U256 = serde_json::from_str(r#""0x0""#).unwrap();
    let deserialized3: U256 = serde_json::from_str(r#""0x1""#).unwrap();
    let deserialized4: U256 = serde_json::from_str(r#""0x01""#).unwrap();
    let deserialized5: U256 = serde_json::from_str(r#""0x100""#).unwrap();

    assert!(deserialized1.is_err());
    assert_eq!(deserialized2, 0.into());
    assert_eq!(deserialized3, 1.into());
    assert_eq!(deserialized4, 1.into());
    assert_eq!(deserialized5, 256.into());
  }

  #[test]
  fn test_to_from_u64() {
    assert_eq!(1u64, U256::from(1u64).low_u64());
    assert_eq!(11u64, U256::from(11u64).low_u64());
    assert_eq!(111u64, U256::from(111u64).low_u64());
  }
}