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-rw-r--r--cvss/v2score.go32
-rw-r--r--cvss/v2score_test.go92
2 files changed, 124 insertions, 0 deletions
diff --git a/cvss/v2score.go b/cvss/v2score.go
new file mode 100644
index 0000000..5740c09
--- /dev/null
+++ b/cvss/v2score.go
@@ -0,0 +1,32 @@
+package cvss
+
+import (
+ "fmt"
+)
+
+// Individual CVSS v2 score.
+//
+// Note: since scores range from 0.0 to 10.0 with one decimal place of
+// precision, they can be safely represented as a uint8.
+type v2Score uint8
+
+// Return floating point representation of score.
+func newV2Score(val float64) (v2Score, error) {
+ // check score range
+ if val < 0.0 || val > 10.0 {
+ return v2Score(0), fmt.Errorf("score value out of range [0, 10]: %f", val)
+ }
+
+ // convert to score, return success
+ return v2Score(uint8(10.0 * val)), nil
+}
+
+// Return string representation of score.
+func (s v2Score) String() string {
+ return fmt.Sprintf("%d.%d", s / 10, s % 10)
+}
+
+// Return floating point representation of score.
+func (s v2Score) Float() float32 {
+ return float32(s) / 10.0
+}
diff --git a/cvss/v2score_test.go b/cvss/v2score_test.go
new file mode 100644
index 0000000..f83b76e
--- /dev/null
+++ b/cvss/v2score_test.go
@@ -0,0 +1,92 @@
+package cvss
+
+import (
+ "strconv"
+ "testing"
+)
+
+func TestNewV2Score(t *testing.T) {
+ // pass tests
+ for exp := 0; exp < 100; exp++ {
+ val := float64(exp) / 10.0
+
+ t.Run(strconv.FormatInt(int64(exp), 10), func(t *testing.T) {
+ got, err := newV2Score(val)
+ if err != nil {
+ t.Error(err)
+ } else if int(got) != exp {
+ t.Errorf("got %d, exp %d", int(got), exp)
+ }
+ })
+ }
+
+ // fail tests
+ failTests := []float64 { -10.0, -0.1, 10.1, 100.0 }
+ for _, val := range(failTests) {
+ t.Run(strconv.FormatFloat(val, 'f', 2, 64), func(t *testing.T) {
+ if got, err := newV2Score(val); err == nil {
+ t.Errorf("got %v, exp error", got)
+ }
+ })
+ }
+}
+
+func TestV2ScoreString(t *testing.T) {
+ tests := []struct {
+ val float64
+ exp string
+ } {
+ { 0.0, "0.0" },
+ { 1.0, "1.0" },
+ { 1.1, "1.1" },
+ { 1.2, "1.2" },
+ { 2.0, "2.0" },
+ { 7.5, "7.5" },
+ { 10.0, "10.0" },
+ }
+
+ for _, test := range(tests) {
+ t.Run(test.exp, func(t *testing.T) {
+ if val, err := newV2Score(test.val); err != nil {
+ t.Error(err)
+ } else if val.String() != test.exp {
+ t.Errorf("got \"%s\", exp \"%s\"", val.String(), test.exp)
+ }
+ })
+ }
+}
+
+func TestV2ScoreFloat(t *testing.T) {
+ tests := []struct {
+ val float64
+ exp float32
+ } {
+ { 0.0, float32(0.0) },
+ { 1.0, float32(1.0) },
+ { 1.1, float32(1.1) },
+ { 1.2, float32(1.2) },
+ { 2.0, float32(2.0) },
+ { 7.5, float32(7.5) },
+ { 7.5, float32(7.5) },
+ { 10.0, float32(10.0) },
+
+ // test weird cases
+ { 7.59, float32(7.5) },
+ { 8.11111111, float32(8.1) },
+ }
+
+ for _, test := range(tests) {
+ t.Run(strconv.FormatFloat(test.val, 'f', 2, 64), func(t *testing.T) {
+ s, err := newV2Score(test.val)
+ if err != nil {
+ t.Error(err)
+ return
+ }
+
+ got := s.Float()
+ if got != test.exp {
+ t.Errorf("got \"%f\", exp \"%f\"", got, test.exp)
+ }
+ })
+ }
+}