cder 0.2.2

database seed generator that helps create and persist struct-typed instances based on serde-compatible yaml files
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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217

mod test_utils;
use test_utils::{get_test_base_dir, parse_datetime, Customer, Item, Order, Plan};
extern crate cder;

use anyhow::Result;
use cder::{Dict, StructLoader};
use std::env;

#[test]
fn test_struct_loader_new() {
    let loader = StructLoader::<Item>::new("items.yml", "fixtures");
    assert_eq!(loader.filename, "items.yml");
    assert_eq!(loader.base_dir, "fixtures".to_string());
}

#[test]
fn test_struct_loader_load_items() -> Result<()> {
    let empty_dict = Dict::<String>::new();
    let base_dir = get_test_base_dir();

    let mut loader = StructLoader::<Item>::new("items.yml", &base_dir);
    loader.load(&empty_dict)?;

    let item = loader.get("Melon")?;
    assert_eq!(item.name, "melon");
    assert_eq!(item.price, 500.0);

    let item = loader.get("Orange")?;
    assert_eq!(item.name, "orange");
    assert_eq!(item.price, 200.0);

    let item = loader.get("Apple")?;
    assert_eq!(item.name, "apple");
    assert_eq!(item.price, 100.0);

    let item = loader.get("Carrot")?;
    assert_eq!(item.name, "carrot");
    assert_eq!(item.price, 150.0);

    Ok(())
}

#[test]
fn test_struct_loader_get_all_items() -> Result<()> {
    let empty_dict = Dict::<String>::new();
    let base_dir = get_test_base_dir();

    let mut loader = StructLoader::<Item>::new("items.yml", &base_dir);
    loader.load(&empty_dict)?;

    let named_records = loader.get_all_records()?;

    let item = named_records.get("Melon").unwrap();
    assert_eq!(item.name, "melon");
    assert_eq!(item.price, 500.0);

    let item = named_records.get("Orange").unwrap();
    assert_eq!(item.name, "orange");
    assert_eq!(item.price, 200.0);

    let item = named_records.get("Apple").unwrap();
    assert_eq!(item.name, "apple");
    assert_eq!(item.price, 100.0);

    let item = named_records.get("Carrot").unwrap();
    assert_eq!(item.name, "carrot");
    assert_eq!(item.price, 150.0);

    Ok(())
}

#[test]
fn test_struct_loader_load_customers() -> Result<()> {
    let empty_dict = Dict::<String>::new();
    let base_dir = get_test_base_dir();

    {
        // when ENV var is specified

        env::set_var("DEV_EMAIL", "johndoo@dev.example.com");
        let mut loader = StructLoader::<Customer>::new("customers.yml", &base_dir);
        loader.load(&empty_dict)?;

        let customer = loader.get("Alice")?;
        assert_eq!(customer.name, "Alice");
        assert_eq!(customer.emails.len(), 1);
        assert_eq!(customer.emails[0], "alice@example.com");
        assert_eq!(customer.plan, Plan::Premium);
        assert_eq!(customer.country_code, None);

        let customer = loader.get("Bob")?;
        assert_eq!(customer.name, "Bob");
        assert_eq!(customer.emails.len(), 2);
        assert_eq!(customer.emails[0], "bob@example.com");
        assert_eq!(customer.emails[1], "bob.doe@example.co.jp");
        assert_eq!(
            customer.plan,
            Plan::Family {
                shared_membership: 4
            }
        );
        assert_eq!(customer.country_code, Some(81));

        let customer = loader.get("Dev")?;
        assert_eq!(customer.name, "Developer");
        assert_eq!(customer.emails.len(), 1);
        // replaced by the env var
        assert_eq!(customer.emails[0], "johndoo@dev.example.com");
        assert_eq!(customer.plan, Plan::Standard);
        assert_eq!(customer.country_code, Some(44));

        // teardown
        env::remove_var("DEV_EMAIL");
    }

    {
        // when ENV var is not specified

        let mut loader = StructLoader::<Customer>::new("customers.yml", &base_dir);
        loader.load(&empty_dict)?;

        let customer = loader.get("Alice")?;
        assert_eq!(customer.name, "Alice");
        assert_eq!(customer.emails.len(), 1);
        assert_eq!(customer.emails[0], "alice@example.com");
        assert_eq!(customer.plan, Plan::Premium);
        assert_eq!(customer.country_code, None);

        let customer = loader.get("Bob")?;
        assert_eq!(customer.name, "Bob");
        assert_eq!(customer.emails.len(), 2);
        assert_eq!(customer.emails[0], "bob@example.com");
        assert_eq!(customer.emails[1], "bob.doe@example.co.jp");
        assert_eq!(
            customer.plan,
            Plan::Family {
                shared_membership: 4
            }
        );
        assert_eq!(customer.country_code, Some(81));

        let customer = loader.get("Dev")?;
        assert_eq!(customer.name, "Developer");
        assert_eq!(customer.emails.len(), 1);
        // falls back to default
        assert_eq!(customer.emails[0], "developer@example.com");
        assert_eq!(customer.plan, Plan::Standard);
        assert_eq!(customer.country_code, Some(44));
    }

    Ok(())
}

#[test]
fn test_struct_loader_load_orders() -> Result<()> {
    let base_dir = get_test_base_dir();
    let empty_dict = Dict::<String>::new();

    {
        // when dependencies are missing

        let mut loader = StructLoader::<Order>::new("orders.yml", &base_dir);
        let result = loader.load(&empty_dict);

        assert!(result.is_err());
    }

    {
        // when dependencies are provided
        let foreign_keys = vec![
            ("Alice", 1),
            ("Bob", 2),
            ("Dev", 3),
            ("Melon", 100),
            ("Orange", 101),
            ("Apple", 102),
            ("Carrot", 103),
        ];
        let mapping = foreign_keys
            .into_iter()
            .map(|(name, id)| (name.to_string(), id.to_string()))
            .collect::<Dict<String>>();

        let mut loader = StructLoader::<Order>::new("orders.yml", &base_dir);
        loader.load(&mapping)?;

        let order = loader.get("Order1")?;
        assert_eq!(order.id, 1200);
        assert_eq!(order.customer_id, 1);
        assert_eq!(order.item_id, 102);
        assert_eq!(order.quantity, 2);
        assert_eq!(order.purchased_at, parse_datetime("2021-03-01 15:15:44")?);

        let order = loader.get("Order2")?;
        assert_eq!(order.id, 1201);
        assert_eq!(order.customer_id, 2);
        assert_eq!(order.item_id, 100);
        assert_eq!(order.quantity, 1);
        assert_eq!(order.purchased_at, parse_datetime("2021-03-02 07:51:20")?);

        let order = loader.get("Order3")?;
        assert_eq!(order.id, 1202);
        assert_eq!(order.customer_id, 1);
        assert_eq!(order.item_id, 103);
        assert_eq!(order.quantity, 4);
        assert_eq!(order.purchased_at, parse_datetime("2021-03-10 10:10:33")?);

        let order = loader.get("Order4")?;
        assert_eq!(order.id, 1203);
        assert_eq!(order.customer_id, 3);
        assert_eq!(order.item_id, 100);
        assert_eq!(order.quantity, 2);
        assert_eq!(order.purchased_at, parse_datetime("2021-03-11 11:55:44")?);
    }

    Ok(())
}