-
-
Notifications
You must be signed in to change notification settings - Fork 89
/
index.test.tsx
177 lines (167 loc) · 5.05 KB
/
index.test.tsx
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
import * as React from "react";
import { render, fireEvent } from "@testing-library/react";
import constate from "../src";
function useCounter({ initialCount = 0 } = {}) {
const [count, setCount] = React.useState(initialCount);
const increment = React.useCallback(() => setCount((c) => c + 1), []);
const decrement = () => setCount(count - 1);
return { count, increment, decrement };
}
test("no selectors", () => {
const [CounterProvider, useCounterContext] = constate(useCounter);
const Increment = () => {
const { increment } = useCounterContext();
return <button onClick={increment}>Increment</button>;
};
const Count = () => {
const { count } = useCounterContext();
return <div>{count}</div>;
};
const App = () => (
<CounterProvider>
<Increment />
<Count />
</CounterProvider>
);
const { getByText } = render(<App />);
expect(getByText("0")).toBeDefined();
fireEvent.click(getByText("Increment"));
expect(getByText("1")).toBeDefined();
fireEvent.click(getByText("Increment"));
expect(getByText("2")).toBeDefined();
});
test("single selector", () => {
const [CounterProvider, useCount] = constate(
useCounter,
(value) => value.count
);
const Count = () => {
const count = useCount();
return <div>{count}</div>;
};
const App = () => (
<CounterProvider initialCount={10}>
<Count />
</CounterProvider>
);
const { getByText } = render(<App />);
expect(getByText("10")).toBeDefined();
});
test("two selectors", () => {
const [CounterProvider, useCount, useIncrement] = constate(
useCounter,
(value) => value.count,
(value) => value.increment
);
const Increment = () => {
const increment = useIncrement();
return <button onClick={increment}>Increment</button>;
};
const Count = () => {
const count = useCount();
return <div>{count}</div>;
};
const App = () => (
<CounterProvider initialCount={10}>
<Increment />
<Count />
</CounterProvider>
);
const { getByText } = render(<App />);
expect(getByText("10")).toBeDefined();
fireEvent.click(getByText("Increment"));
expect(getByText("11")).toBeDefined();
fireEvent.click(getByText("Increment"));
expect(getByText("12")).toBeDefined();
});
test("two selectors with inline useValue", () => {
const [CounterProvider, useCount, useIncrement] = constate(
({ initialCount = 0 }: { initialCount?: number } = {}) => {
const [count, setCount] = React.useState(initialCount);
const increment = React.useCallback(() => setCount((c) => c + 1), []);
const decrement = () => setCount(count - 1);
return { count, increment, decrement };
},
(value) => value.count,
(value) => value.increment
);
const Increment = () => {
const increment = useIncrement();
return <button onClick={increment}>Increment</button>;
};
const Count = () => {
const count = useCount();
return <div>{count}</div>;
};
const App = () => (
<CounterProvider initialCount={10}>
<Increment />
<Count />
</CounterProvider>
);
const { getByText } = render(<App />);
expect(getByText("10")).toBeDefined();
fireEvent.click(getByText("Increment"));
expect(getByText("11")).toBeDefined();
fireEvent.click(getByText("Increment"));
expect(getByText("12")).toBeDefined();
});
test("two selectors with hooks inside them", () => {
const [CounterProvider, useCount, useDecrement] = constate(
useCounter,
(value) => value.count,
(value) => React.useCallback(value.decrement, [value.count])
);
const Decrement = () => {
const decrement = useDecrement();
return <button onClick={decrement}>Decrement</button>;
};
const Count = () => {
const count = useCount();
return <div>{count}</div>;
};
const App = () => (
<CounterProvider initialCount={10}>
<Decrement />
<Count />
</CounterProvider>
);
const { getByText } = render(<App />);
expect(getByText("10")).toBeDefined();
fireEvent.click(getByText("Decrement"));
expect(getByText("9")).toBeDefined();
fireEvent.click(getByText("Decrement"));
expect(getByText("8")).toBeDefined();
});
test("without provider", () => {
jest.spyOn(console, "warn").mockImplementation(() => {});
const [, useCount] = constate(useCounter);
const Count = () => {
useCount();
return null;
};
const App = () => <Count />;
render(<App />);
// eslint-disable-next-line no-console
expect(console.warn).toHaveBeenCalledWith(
"Component must be wrapped with Provider."
);
});
test("displayName with named useValue with no selector", () => {
const [Provider] = constate(useCounter);
expect(Provider.displayName).toBe("Constate");
});
test("displayName with anonymous useValue", () => {
const [Provider] = constate(() => {});
expect(Provider.displayName).toBeUndefined();
});
test("displayName with named useValue with selectors", () => {
const [Provider] = constate(
useCounter,
// @ts-expect-error
(value) => value.count,
// @ts-expect-error
(value) => value.increment
);
expect(Provider.displayName).toBe("Constate");
});