<!DOCTYPE html>
<meta charset="UTF-8">
<style>
.parent {
  stroke-dasharray: 30 10;
}
.target {
  font-size: 16px;
}
</style>
<body>
<template id="target-template">
  <svg height="400" width="5">
    <path d="M0,0 l0,400" class="target">
  </svg>
</template>
<script src="../interpolation/resources/interpolation-test.js"></script>
<script>
// Basic case
assertComposition({
  property: 'stroke-dasharray',
  underlying: '5 5',
  addFrom: '0 5',
  addTo: '10 15',
}, [
  {at: -0.6, is: ' 0  4'}, // Values must be non-negative.
  {at: -0.4, is: ' 1  6'},
  {at: -0.2, is: ' 3  8'},
  {at:  0,   is: ' 5 10'},
  {at:  0.2, is: ' 7 12'},
  {at:  0.4, is: ' 9 14'},
  {at:  0.6, is: '11 16'},
  {at:  0.8, is: '13 18'},
  {at:  1,   is: '15 20'},
  {at:  1.2, is: '17 22'},
]);

assertComposition({
  property: 'stroke-dasharray',
  underlying: '10 10',
  replaceFrom: '5 10',
  addTo: '5 10',
}, [
  {at: -0.6, is: ' 0  4'}, // Values must be non-negative.
  {at: -0.4, is: ' 1  6'},
  {at: -0.2, is: ' 3  8'},
  {at:  0,   is: ' 5 10'},
  {at:  0.2, is: ' 7 12'},
  {at:  0.4, is: ' 9 14'},
  {at:  0.6, is: '11 16'},
  {at:  0.8, is: '13 18'},
  {at:  1,   is: '15 20'},
  {at:  1.2, is: '17 22'},
]);

assertComposition({
  property: 'stroke-dasharray',
  underlying: '10 30',
  addFrom: 'none',
  addTo: '10 10',
}, [
  {at: -1.5, is: 'none'},
  {at: -0.5, is: 'none'},
  {at:  0,   is: 'none'},
  {at:  0.4, is: 'none'},
  {at:  0.5, is: '20 40'},
  {at:  0.6, is: '20 40'},
  {at:  1,   is: '20 40'},
  {at:  1.5, is: '20 40'},
]);

// Differing list lengths
// Lists are repeated until length is equal to lowest common multiple of lengths.
assertComposition({
  property: 'stroke-dasharray',
  underlying: '0 5',
  addFrom: '5',
  replaceTo: '15 20 25',
}, [
  {at: -0.2, is: ' 3  8  1  9  2  7'},
  {at:  0,   is: ' 5 10'},
  {at:  0.2, is: ' 7 12  9 11  8 13'},
  {at:  0.4, is: ' 9 14 13 12 11 16'},
  {at:  0.6, is: '11 16 17 13 14 19'},
  {at:  0.8, is: '13 18 21 14 17 22'},
  {at:  1,   is: '15 20 25'},
  {at:  1.2, is: '17 22 29 16 23 28'},
]);

// Lowest common multiple of list lengths not equal to multiple of list lengths
assertComposition({
  property: 'stroke-dasharray',
  underlying: '10 30',
  replaceFrom: '5 10 15 20',
  addTo: '15 0 25 10 35 20',
}, [
  {at: -0.2, is: ' 1  6 11 16  0  2 13 18  0  4  9 14'},  // Values must be non-negative.
  {at:  0,   is: ' 5 10 15 20'},
  {at:  0.2, is: ' 9 14 19 24 13 18 17 22 11 16 21 26'},
  {at:  0.4, is: '13 18 23 28 21 26 19 24 17 22 27 32'},
  {at:  0.6, is: '17 22 27 32 29 34 21 26 23 28 33 38'},
  {at:  0.8, is: '21 26 31 36 37 42 23 28 29 34 39 44'},
  {at:  1,   is: '25 30 35 40 45 50'},
  {at:  1.2, is: '29 34 39 44 53 58 27 32 41 46 51 56'},
]);

// One list has odd length
assertComposition({
  property: 'stroke-dasharray',
  underlying: '10 20',
  replaceFrom: '5 10 15',
  addTo: '10 5 20 15',
}, [
  {at: -0.2, is: ' 2  7 12  0  8 13  0  5 14  1  6 11'},  // Values must be non-negative.
  {at:  0,   is: ' 5 10 15'},
  {at:  0.2, is: ' 8 13 18 11 12 17 10 15 16  9 14 19'},
  {at:  0.4, is: '11 16 21 17 14 19 15 20 17 13 18 23'},
  {at:  0.6, is: '14 19 24 23 16 21 20 25 18 17 22 27'},
  {at:  0.8, is: '17 22 27 29 18 23 25 30 19 21 26 31'},
  {at:  1,   is: '20 25 30 35'},
  {at:  1.2, is: '23 28 33 41 22 27 35 40 21 29 34 39'},
]);

// Both lists have odd length
assertComposition({
  property: 'stroke-dasharray',
  underlying: '5',
  addFrom: '0 5 10',
  addTo: '15 20 25 30 35',
}, [
  {at: -0.2, is: ' 2  7 12  0  4 14  1  6 11  0  8 13  0  5 10'},  // Values must be non-negative.
  {at:  0,   is: ' 5 10 15'},
  {at:  0.2, is: ' 8 13 18 11 16 16  9 14 19 12 12 17 10 15 20'},
  {at:  0.4, is: '11 16 21 17 22 17 13 18 23 19 14 19 15 20 25'},
  {at:  0.6, is: '14 19 24 23 28 18 17 22 27 26 16 21 20 25 30'},
  {at:  0.8, is: '17 22 27 29 34 19 21 26 31 33 18 23 25 30 35'},
  {at:  1,   is: '20 25 30 35 40'},
  {at:  1.2, is: '23 28 33 41 46 21 29 34 39 47 22 27 35 40 45'},
]);

// Mixed units
assertComposition({
  property: 'stroke-dasharray',
  underlying: '1em',
  addFrom: '9em 14px',
  addTo: '304px 1.5em',
}, [
  {at: -0.2, is: '8em 28px'},
  {at:  0,   is: '10em 30px'},
  {at:  0.2, is: '12em 32px'},
  {at:  0.4, is: '14em 34px'},
  {at:  0.6, is: '16em 36px'},
  {at:  0.8, is: '18em 38px'},
  {at:  1,   is: '20em 40px'},
  {at:  1.2, is: '22em 42px'},
]);
</script>
</body>