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describe('Plugin.filler', function() {
function decodedFillValues(chart) {
return chart.data.datasets.map(function(dataset, index) {
var meta = chart.getDatasetMeta(index) || {};
expect(meta.$filler).toBeDefined();
return meta.$filler.fill;
});
}
describe('auto', jasmine.fixture.specs('plugin.filler'));
describe('dataset.fill', function() {
it('should support boundaries', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: 'origin'},
{fill: 'start'},
{fill: 'end'},
]
}
});
expect(decodedFillValues(chart)).toEqual(['origin', 'start', 'end']);
});
it('should support absolute dataset index', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: 1},
{fill: 3},
{fill: 0},
{fill: 2},
]
}
});
expect(decodedFillValues(chart)).toEqual([1, 3, 0, 2]);
});
it('should support relative dataset index', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: '+3'},
{fill: '-1'},
{fill: '+1'},
{fill: '-2'},
]
}
});
expect(decodedFillValues(chart)).toEqual([
3, // 0 + 3
0, // 1 - 1
3, // 2 + 1
1, // 3 - 2
]);
});
it('should handle default fill when true (origin)', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: true},
{fill: false},
]
}
});
expect(decodedFillValues(chart)).toEqual(['origin', false]);
});
it('should ignore self dataset index', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: 0},
{fill: '-0'},
{fill: '+0'},
{fill: 3},
]
}
});
expect(decodedFillValues(chart)).toEqual([
false, // 0 === 0
false, // 1 === 1 - 0
false, // 2 === 2 + 0
false, // 3 === 3
]);
});
it('should ignore out of bounds dataset index', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: -2},
{fill: 4},
{fill: '-3'},
{fill: '+1'},
]
}
});
expect(decodedFillValues(chart)).toEqual([
false, // 0 - 2 < 0
false, // 1 + 4 > 3
false, // 2 - 3 < 0
false, // 3 + 1 > 3
]);
});
it('should ignore invalid values', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: 'foo'},
{fill: '+foo'},
{fill: '-foo'},
{fill: '+1.1'},
{fill: '-2.2'},
{fill: 3.3},
{fill: -4.4},
{fill: NaN},
{fill: Infinity},
{fill: ''},
{fill: null},
{fill: []},
{fill: {}},
{fill: function() {}}
]
}
});
expect(decodedFillValues(chart)).toEqual([
false, // NaN (string)
false, // NaN (string)
false, // NaN (string)
false, // float (string)
false, // float (string)
false, // float (number)
false, // float (number)
false, // NaN
false, // !isFinite
false, // empty string
false, // null
false, // array
false, // object
false, // function
]);
});
});
describe('options.plugins.filler.propagate', function() {
it('should compute propagated fill targets if true', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: 'start', hidden: true},
{fill: '-1', hidden: true},
{fill: 1, hidden: true},
{fill: '-2', hidden: true},
{fill: '+1'},
{fill: '+2'},
{fill: '-1'},
{fill: 'end', hidden: true},
]
},
options: {
plugins: {
filler: {
propagate: true
}
}
}
});
expect(decodedFillValues(chart)).toEqual([
'start', // 'start'
'start', // 1 - 1 -> 0 (hidden) -> 'start'
'start', // 1 (hidden) -> 0 (hidden) -> 'start'
'start', // 3 - 2 -> 1 (hidden) -> 0 (hidden) -> 'start'
5, // 4 + 1
'end', // 5 + 2 -> 7 (hidden) -> 'end'
5, // 6 - 1 -> 5
'end', // 'end'
]);
});
it('should preserve initial fill targets if false', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: 'start', hidden: true},
{fill: '-1', hidden: true},
{fill: 1, hidden: true},
{fill: '-2', hidden: true},
{fill: '+1'},
{fill: '+2'},
{fill: '-1'},
{fill: 'end', hidden: true},
]
},
options: {
plugins: {
filler: {
propagate: false
}
}
}
});
expect(decodedFillValues(chart)).toEqual([
'start', // 'origin'
0, // 1 - 1
1, // 1
1, // 3 - 2
5, // 4 + 1
7, // 5 + 2
5, // 6 - 1
'end', // 'end'
]);
});
it('should prevent recursive propagation', function() {
var chart = window.acquireChart({
type: 'line',
data: {
datasets: [
{fill: '+2', hidden: true},
{fill: '-1', hidden: true},
{fill: '-1', hidden: true},
{fill: '-2'}
]
},
options: {
plugins: {
filler: {
propagate: true
}
}
}
});
expect(decodedFillValues(chart)).toEqual([
false, // 0 + 2 -> 2 (hidden) -> 1 (hidden) -> 0 (loop)
false, // 1 - 1 -> 0 (hidden) -> 2 (hidden) -> 1 (loop)
false, // 2 - 1 -> 1 (hidden) -> 0 (hidden) -> 2 (loop)
false, // 3 - 2 -> 1 (hidden) -> 0 (hidden) -> 2 (hidden) -> 1 (loop)
]);
});
});
});