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1
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2
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var assert = require('assert'); |
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3
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4
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describe('16-bit from bytes', function() { |
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5
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6
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let byteData = require('../../index.js'); |
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7
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8
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it('should turn 2 bytes to a 16-bit int', function() { |
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assert.deepEqual(byteData.fromBytes( |
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10
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[0,0,0,0], 16, {"signed": false}), |
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11
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[0,0]); |
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12
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}); |
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13
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it('should turn 4 bytes bin to 2 16-bit ints (max range)', function() { |
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14
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assert.deepEqual(byteData.fromBytes( |
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15
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["00000000", "10000000", "11111111", "01111111"], |
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16
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16, {"base": 2, "signed": true}), |
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17
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[-32768, 32767]); |
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18
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}); |
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19
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it('should turn 4 bytes bin to 2 16-bit uInts (max range)', function() { |
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assert.deepEqual(byteData.fromBytes( |
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21
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["00000000","00000000","11111111","11111111"], |
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22
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16, {"base": 2, "signed": false}), |
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23
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[0, 65535]); |
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24
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}); |
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25
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it('should turn 5 bytes bin to 2 16-bit uInts (ignore the extra byte) (max range)', function() { |
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26
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assert.deepEqual(byteData.fromBytes( |
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27
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["00000000","00000000","11111111","11111111","11111111"], |
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28
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16, {"base": 2, "signed": false}), |
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29
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[0, 65535]); |
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30
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}); |
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31
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it('should turn 1 byte bin to 0 16-bit uInts (not enough bytes)', function() { |
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32
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assert.deepEqual(byteData.fromBytes( |
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33
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["11111111"], |
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34
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16, {"base": 2, "signed": false}), |
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35
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[]); |
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36
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}); |
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37
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it('should turn 4 bytes hex to 2 16-bit ints (max range)', function() { |
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assert.deepEqual(byteData.fromBytes( |
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39
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["0","80","ff","7f"], 16, {"base": 16, "signed": true}), |
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40
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[-32768, 32767]); |
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41
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}); |
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42
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it('should turn 4 bytes hex to 2 16-bit uInts (max range)', function() { |
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43
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assert.deepEqual(byteData.fromBytes( |
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44
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["0","0","ff","ff"], 16, {"base": 16, "signed": false}), |
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45
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[0, 65535]); |
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46
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}); |
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47
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48
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// 16-bit floats: 0s |
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49
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it('should turn 2 bytes to 1 16-bit float (0)', function() { |
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50
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assert.deepEqual(byteData.fromBytes( |
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[0, 0], 16, {"base": 10, "float": true}), |
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52
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[0]); |
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53
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}); |
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54
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it('should turn 2 bytes hex to 1 16-bit float (0)', function() { |
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55
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assert.deepEqual(byteData.fromBytes( |
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56
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["0", "0"], 16, {"base": 16, "float": true}), |
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57
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[0]); |
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58
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}); |
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59
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it('should turn 2 bytes bin to 1 16-bit float (0)', function() { |
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60
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assert.deepEqual(byteData.fromBytes( |
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61
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["00000000", "00000000"], 16, {"base": 2, "float": true}), |
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62
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[0]); |
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63
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}); |
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64
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it('should turn 2 bytes bin to 1 16-bit float (0)', function() { |
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65
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assert.deepEqual(byteData.fromBytes( |
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66
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["c0", "00"], 16, {"base": 16, "float": true}), |
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67
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[-2]); |
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68
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}); |
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69
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it('should turn 2 bytes hex to 1 16-bit float (1)', function() { |
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70
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assert.deepEqual(byteData.fromBytes( |
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71
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["3c", "00"], 16, {"base": 16, "float": true}), |
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72
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[1]); |
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73
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}); |
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74
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it('should turn 2 bytes hex to 1 16-bit float (1/3)', function() { |
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75
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assert.deepEqual(byteData.fromBytes( |
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76
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["35", "55"], 16, {"base": 16, "float": true})[0].toFixed(5), |
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77
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0.33325); |
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78
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}); |
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79
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it('should turn 2 bytes hex to 1 16-bit float (0.00006)', function() { |
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80
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assert.deepEqual(byteData.fromBytes( |
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81
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["4", "0"], 16, {"base": 16, "float": true})[0].toFixed(5), |
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82
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0.00006); |
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83
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}); |
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84
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it('should turn 2 bytes hex to 1 16-bit float (65504)', function() { |
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85
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assert.deepEqual(byteData.fromBytes( |
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86
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["7b", "ff"], 16, {"base": 16, "float": true})[0], |
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87
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65504); |
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88
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}); |
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89
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it('should turn 4 bytes hex to 2 16-bit float (65504, 0.33325)', function() { |
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90
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let halfs = byteData.fromBytes(["7b", "ff", "35", "55"], |
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91
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16, {"base": 16, "float": true}); |
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92
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assert.equal(halfs[0], 65504); |
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93
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assert.equal(halfs[1].toFixed(5), 0.33325); |
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94
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}); |
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95
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it('should turn 5 bytes hex to 2 16-bit float (65504, 0.33325, extra byte)', function() { |
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96
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let halfs = byteData.fromBytes(["7b", "ff", "35", "55","80"], |
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97
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16, {"base": 16, "float": true}); |
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98
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assert.equal(halfs[0], 65504); |
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99
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assert.equal(halfs[1].toFixed(5), 0.33325); |
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100
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}); |
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101
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}); |
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102
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rochars /
byte-data
