mirror of
https://github.com/chylex/Brotli-Builder.git
synced 2024-12-22 16:42:46 +01:00
97 lines
3.6 KiB
Forth
97 lines
3.6 KiB
Forth
namespace UnitTests.Huffman.TestHuffmanNode
|
|
|
|
open Xunit
|
|
open System.Collections.Generic
|
|
open BrotliLib.Collections.Huffman
|
|
open BrotliLib.Serialization
|
|
|
|
#nowarn "0058" // dumb indentation warning
|
|
|
|
|
|
module Helper =
|
|
let leaf = HuffmanNode.Leaf('a')
|
|
|
|
let depth1 = HuffmanNode.Path(
|
|
HuffmanNode.Leaf('a'),
|
|
HuffmanNode.Leaf('b')
|
|
)
|
|
|
|
let depth2count3 = HuffmanNode.Path(
|
|
HuffmanNode.Path(
|
|
HuffmanNode.Leaf('a'),
|
|
HuffmanNode.Leaf('b')
|
|
),
|
|
HuffmanNode.Leaf('c')
|
|
)
|
|
|
|
let depth2count4 = HuffmanNode.Path(
|
|
HuffmanNode.Path(
|
|
HuffmanNode.Leaf('a'),
|
|
HuffmanNode.Leaf('b')
|
|
),
|
|
HuffmanNode.Path(
|
|
HuffmanNode.Leaf('c'),
|
|
HuffmanNode.Leaf('d')
|
|
)
|
|
)
|
|
|
|
|
|
module Traversal =
|
|
[<Fact>]
|
|
let ``a leaf node returns its value without consuming any bits`` () =
|
|
Assert.Equal('a', Helper.leaf.LookupValue(BitStream().GetReader()))
|
|
|
|
[<Fact>]
|
|
let ``a path of depth 1 returns correct values for each path`` () =
|
|
Assert.Equal('a', Helper.depth1.LookupValue(BitStream("0").GetReader()))
|
|
Assert.Equal('b', Helper.depth1.LookupValue(BitStream("1").GetReader()))
|
|
|
|
[<Fact>]
|
|
let ``a path of depth 2 with 3 symbols returns correct values for each path`` () =
|
|
Assert.Equal('a', Helper.depth2count3.LookupValue(BitStream("00").GetReader()))
|
|
Assert.Equal('b', Helper.depth2count3.LookupValue(BitStream("01").GetReader()))
|
|
Assert.Equal('c', Helper.depth2count3.LookupValue(BitStream("1").GetReader()))
|
|
|
|
[<Fact>]
|
|
let ``a path of depth 2 with 4 symbols returns correct values for each path`` () =
|
|
Assert.Equal('a', Helper.depth2count4.LookupValue(BitStream("00").GetReader()))
|
|
Assert.Equal('b', Helper.depth2count4.LookupValue(BitStream("01").GetReader()))
|
|
Assert.Equal('c', Helper.depth2count4.LookupValue(BitStream("10").GetReader()))
|
|
Assert.Equal('d', Helper.depth2count4.LookupValue(BitStream("11").GetReader()))
|
|
|
|
[<Fact>]
|
|
let ``running out of bits returns default value`` () =
|
|
Assert.Equal(Unchecked.defaultof<char>, Helper.depth2count4.LookupValue(BitStream("0").GetReader()))
|
|
|
|
|
|
module ValueMap =
|
|
[<Fact>]
|
|
let ``a leaf node returns its value mapped to an empty bit stream`` () =
|
|
Assert.Equal<IEnumerable<KeyValuePair<_, _>>>(seq {
|
|
yield KeyValuePair('a', BitStream())
|
|
}, Helper.leaf.GenerateValueMap())
|
|
|
|
[<Fact>]
|
|
let ``a path of depth 1 returns its values mapped to correct bit streams`` () =
|
|
Assert.Equal<IEnumerable<KeyValuePair<_, _>>>(seq {
|
|
yield KeyValuePair('a', BitStream("0"))
|
|
yield KeyValuePair('b', BitStream("1"))
|
|
}, Helper.depth1.GenerateValueMap())
|
|
|
|
[<Fact>]
|
|
let ``a path of depth 2 with 3 symbols returns its values mapped to correct bit streams`` () =
|
|
Assert.Equal<IEnumerable<KeyValuePair<_, _>>>(seq {
|
|
yield KeyValuePair('a', BitStream("00"))
|
|
yield KeyValuePair('b', BitStream("01"))
|
|
yield KeyValuePair('c', BitStream("1"))
|
|
}, Helper.depth2count3.GenerateValueMap())
|
|
|
|
[<Fact>]
|
|
let ``a path of depth 2 with 4 symbols returns its values mapped to correct bit streams`` () =
|
|
Assert.Equal<IEnumerable<KeyValuePair<_, _>>>(seq {
|
|
yield KeyValuePair('a', BitStream("00"))
|
|
yield KeyValuePair('b', BitStream("01"))
|
|
yield KeyValuePair('c', BitStream("10"))
|
|
yield KeyValuePair('d', BitStream("11"))
|
|
}, Helper.depth2count4.GenerateValueMap())
|