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126 lines
2.9 KiB
Go
126 lines
2.9 KiB
Go
/**
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* Unit tests for inversion tree.
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*
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* Copyright 2016, Peter Collins
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*/
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package reedsolomon
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import (
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"testing"
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)
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func TestNewInversionTree(t *testing.T) {
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tree := newInversionTree(3, 2)
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children := len(tree.root.children)
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if children != 5 {
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t.Fatal("Root node children list length", children, "!=", 5)
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}
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str := tree.root.matrix.String()
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expect := "[[1, 0, 0], [0, 1, 0], [0, 0, 1]]"
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if str != expect {
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t.Fatal(str, "!=", expect)
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}
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}
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func TestGetInvertedMatrix(t *testing.T) {
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tree := newInversionTree(3, 2)
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matrix := tree.GetInvertedMatrix([]int{})
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str := matrix.String()
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expect := "[[1, 0, 0], [0, 1, 0], [0, 0, 1]]"
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if str != expect {
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t.Fatal(str, "!=", expect)
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}
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matrix = tree.GetInvertedMatrix([]int{1})
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if matrix != nil {
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t.Fatal(matrix, "!= nil")
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}
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matrix = tree.GetInvertedMatrix([]int{1, 2})
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if matrix != nil {
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t.Fatal(matrix, "!= nil")
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}
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matrix, err := newMatrix(3, 3)
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if err != nil {
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t.Fatalf("Failed initializing new Matrix : %s", err)
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}
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err = tree.InsertInvertedMatrix([]int{1}, matrix, 5)
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if err != nil {
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t.Fatalf("Failed inserting new Matrix : %s", err)
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}
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cachedMatrix := tree.GetInvertedMatrix([]int{1})
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if cachedMatrix == nil {
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t.Fatal(cachedMatrix, "== nil")
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}
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if matrix.String() != cachedMatrix.String() {
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t.Fatal(matrix.String(), "!=", cachedMatrix.String())
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}
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}
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func TestInsertInvertedMatrix(t *testing.T) {
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tree := newInversionTree(3, 2)
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matrix, err := newMatrix(3, 3)
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if err != nil {
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t.Fatalf("Failed initializing new Matrix : %s", err)
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}
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err = tree.InsertInvertedMatrix([]int{1}, matrix, 5)
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if err != nil {
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t.Fatalf("Failed inserting new Matrix : %s", err)
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}
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err = tree.InsertInvertedMatrix([]int{}, matrix, 5)
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if err == nil {
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t.Fatal("Should have failed inserting the root node matrix", matrix)
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}
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matrix, err = newMatrix(3, 2)
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if err != nil {
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t.Fatalf("Failed initializing new Matrix : %s", err)
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}
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err = tree.InsertInvertedMatrix([]int{2}, matrix, 5)
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if err == nil {
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t.Fatal("Should have failed inserting a non-square matrix", matrix)
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}
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matrix, err = newMatrix(3, 3)
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if err != nil {
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t.Fatalf("Failed initializing new Matrix : %s", err)
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}
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err = tree.InsertInvertedMatrix([]int{0, 1}, matrix, 5)
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if err != nil {
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t.Fatalf("Failed inserting new Matrix : %s", err)
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}
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}
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func TestDoubleInsertInvertedMatrix(t *testing.T) {
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tree := newInversionTree(3, 2)
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matrix, err := newMatrix(3, 3)
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if err != nil {
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t.Fatalf("Failed initializing new Matrix : %s", err)
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}
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err = tree.InsertInvertedMatrix([]int{1}, matrix, 5)
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if err != nil {
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t.Fatalf("Failed inserting new Matrix : %s", err)
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}
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err = tree.InsertInvertedMatrix([]int{1}, matrix, 5)
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if err != nil {
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t.Fatalf("Failed inserting new Matrix : %s", err)
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}
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cachedMatrix := tree.GetInvertedMatrix([]int{1})
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if cachedMatrix == nil {
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t.Fatal(cachedMatrix, "== nil")
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}
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if matrix.String() != cachedMatrix.String() {
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t.Fatal(matrix.String(), "!=", cachedMatrix.String())
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}
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}
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