1 files changed, 22 insertions, 0 deletions
diff --git a/cli/cli_test.go b/cli/cli_test.go
new file mode 100644
index 0000000..8290bce
--- /dev/null
+++ b/cli/cli_test.go
@@ -0,0 +1,22 @@
+package cli
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBacktestStatsUseUnroundedSamples(t *testing.T) {
+	absErrors := []float64{0, 0.1, 0.1}
+
+	assert.InDelta(t, 1.0/15, meanAbsErr(absErrors), 1e-12)
+	assert.InDelta(t, 1.0/30, stdErrAbsErr(absErrors), 1e-12)
+}
+
+func TestErrorDistributionUsesNearestRank(t *testing.T) {
+	distribution := errorDistribution([]float64{1, 2, 3, 4}, []float64{50, 75, 99})
+
+	assert.Equal(t, 2.0, distribution[50])
+	assert.Equal(t, 3.0, distribution[75])
+	assert.Equal(t, 4.0, distribution[99])
+}