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ArrayReader.test.js
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115 lines (92 loc) · 4.7 KB
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import ValueReader from './ValueReader';
import ArrayReader from './ArrayReader';
test('Compare current empty array to array having some items. Has changes', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), false);
var context = { isChanged: false, hash: {} };
var result = reader.read(result, [1, 2, 2, 3, 4, 5, 4, 1], "items", context);
expect(context.isChanged).toBe(true);
});
test('Compare current array to the same array again. No changes.', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), false);
var context = { isChanged: false, hash: {} };
var result = reader.read(result, [1, 2, 2, 3, 4, 5, 4, 1], "items", context);
context.isChanged = false;
var result = reader.read(result, [1, 2, 2, 3, 4, 5, 4, 1], "items", context);
expect(!context.isChanged).toBe(true);
});
test('Remove one item from source collection and compare again. Has changes', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), false);
var context = { isChanged: false, hash: {} };
var result = reader.read(result, [1, 2, 2, 3, 4, 5, 4, 1], "items", context);
context.isChanged = false;
var result = reader.read(result, [1, 2, 2, 3, 5, 4, 1], "items", context);
expect(context.isChanged).toBe(true);
});
test('Swap two values in source collection and compare again. Has changes', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), false);
var context = { isChanged: false, hash: {} };
var result = reader.read(result, [1, 2, 2, 3, 4, 5, 4, 1], "items", context);
context.isChanged = false;
var result = reader.read(result, [1, 2, 3, 2, 4, 5, 4, 1], "items", context);
expect(context.isChanged).toBe(true);
});
test('Compare current array having items to new empty array. Has changes.', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), false);
var context = { isChanged: false, hash: {} };
var result = reader.read(result, [1, 2, 2, 3, 4, 5, 4, 1], "items", context);
context.isChanged = false;
var result = reader.read(result, [], "items", context);
expect(context.isChanged).toBe(true);
});
test('Compare current empty array to array having some items. Has changes.', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), true);
var context = { isChanged: false, hash: {} };
var target = [];
var result = reader.read(result, [1, 2, 3, 4, 5], "items", context);
expect(context.isChanged).toBe(true);
});
test('Compare current array to the same array again, but having shuffled items. No changes.', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), true);
var context = { isChanged: false, hash: {} };
var target = [];
var result = reader.read(result, [1, 2, 3, 4, 5], "items", context);
context.isChanged = false;
var result = reader.read(result, [5, 1, 3, 2, 4], "items", context);
expect(!context.isChanged).toBe(true);
});
test('Remove one item from source collection and compare again. Has changes', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), true);
var context = { isChanged: false, hash: {} };
var target = [];
var result = reader.read(result, [1, 2, 3, 4, 5], "items", context);
context.isChanged = false;
var result = reader.read(result, [1, 2, 3, 4], "items", context);
expect(context.isChanged).toBe(true);
});
test('Swap two values in source collection and compare again. Has no changes', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), true);
var context = { isChanged: false, hash: {} };
var target = [];
var result = reader.read(result, [1, 2, 3, 4], "items", context);
context.isChanged = false;
var result = reader.read(result, [1, 3, 2, 4], "items", context);
expect(!context.isChanged).toBe(true);
});
test('Add 2 duplicates into source collection and compare again. Has no changes', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), true);
var context = { isChanged: false, hash: {} };
var target = [];
var result = reader.read(result, [1, 2, 3, 4], "items", context);
context.isChanged = false;
var result = reader.read(result, [1, 3, 3, 2, 4, 4], "items", context);
expect(!context.isChanged).toBe(true);
});
test('Compare current array having items to new empty array. Has changes.', () => {
var reader = new ArrayReader(new ValueReader(["string", "number"], true), true);
var context = { isChanged: false, hash: {} };
var target = [];
var result = reader.read(result, [1, 2, 3, 4], "items", context);
context.isChanged = false;
var result = reader.read(result, [], "items", context);
expect(context.isChanged).toBe(true);
});