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strassen_test.go
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strassen_test.go
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package main
import (
. "github.com/smartystreets/goconvey/convey"
"io/ioutil"
"strings"
"testing"
)
func TestSpec(t *testing.T) {
Convey("Given the test input file", t, func() {
Convey("The first array should contain 2(INPUT*INPUT) numbers", func() {
input := 4
b, _ := ioutil.ReadFile("test.txt")
tf := string(b)
ints, _ := ReadInts(strings.NewReader(tf))
So(ints, ShouldHaveLength, 2*(input*input))
})
Convey("Each row should contain INPUT numbers", func() {
input := 4
b, _ := ioutil.ReadFile("test.txt")
tf := string(b)
ints, _ := ReadInts(strings.NewReader(tf))
matrix := BuildMatrices(4, ints)
So(matrix.a, ShouldHaveLength, input)
So(matrix.a[0], ShouldHaveLength, input)
So(matrix.b, ShouldHaveLength, input)
So(matrix.b[0], ShouldHaveLength, input)
})
Convey("CLASSIC Identity matrix times any matrix A should equal A", func() {
input := 4
b, _ := ioutil.ReadFile("test.txt")
tf := string(b)
ints, _ := ReadInts(strings.NewReader(tf))
matrix := BuildMatrices(4, ints)
res := ClassicMatrixMult_K_First(&matrix)
for i := 0; i < input; i++ {
for j := 0; j < input; j++ {
So(res.a[i][j], ShouldEqual, res.res[i][j])
}
}
})
Convey("STRASSEN Identity matrix times any matrix A should equal A", func() {
input := 8
b, _ := ioutil.ReadFile("test_8.txt")
tf := string(b)
ints, _ := ReadInts(strings.NewReader(tf))
matrix := BuildMatrices(input, ints)
res := StrassenMatrixMult(&matrix, 4)
for i := 0; i < input; i++ {
for j := 0; j < input; j++ {
So(res.res[i][j], ShouldEqual, matrix.a[i][j])
}
}
})
Convey("I can deconstruct and reconstruct a matrix", func() {
d, _ := ioutil.ReadFile("test.txt")
tf := string(d)
ints, _ := ReadInts(strings.NewReader(tf))
matrix := BuildMatrices(4, ints)
a := matrix.a
b := matrix.b
dimensions := len(a[0])
new_dimensions := dimensions / 2
c := [][]int{}
count := 0
for count < dimensions {
y := make([]int, dimensions)
c = append(c, y)
count++
}
b11 := [][]int{}
b12 := [][]int{}
b21 := [][]int{}
b22 := [][]int{}
a11 := [][]int{}
a12 := [][]int{}
a21 := [][]int{}
a22 := [][]int{}
for i := 0; i < dimensions; i++ {
if i < new_dimensions {
b11 = append(b11, b[i][:new_dimensions])
b12 = append(b12, b[i][new_dimensions:])
a11 = append(a11, a[i][:new_dimensions])
a12 = append(a12, a[i][new_dimensions:])
} else {
b21 = append(b21, b[i][:new_dimensions])
b22 = append(b22, b[i][new_dimensions:])
a21 = append(a21, a[i][:new_dimensions])
a22 = append(a22, a[i][new_dimensions:])
}
}
y := 0
for x := 0; x < dimensions; x++ {
if x < (dimensions / 2) {
c[x] = append(a11[x], a12[x]...)
} else {
c[x] = append(a21[y], a22[y]...)
y++
}
}
for i := 0; i < dimensions; i++ {
for j := 0; j < dimensions; j++ {
So(c[i][j], ShouldEqual, matrix.a[i][j])
}
}
})
Convey("Adding two matrices together should work", func() {
input := 4
b, _ := ioutil.ReadFile("test_sum.txt")
tf := string(b)
ints, _ := ReadInts(strings.NewReader(tf))
matrix := BuildMatrices(4, ints)
c := AddMatrices(matrix.a, matrix.b)
for i := 0; i < input; i++ {
for j := 0; j < input; j++ {
So(c[i][j], ShouldEqual, 2)
}
}
})
Convey("Subtracting two matrices should work", func() {
input := 4
b, _ := ioutil.ReadFile("test_sum.txt")
tf := string(b)
ints, _ := ReadInts(strings.NewReader(tf))
matrix := BuildMatrices(4, ints)
c := SubtractMatrices(matrix.a, matrix.b)
for i := 0; i < input; i++ {
for j := 0; j < input; j++ {
So(c[i][j], ShouldEqual, 0)
}
}
})
})
}