From 1236d60193ec80c20ceb0c77e2432d4c53dc7813 Mon Sep 17 00:00:00 2001
From: Roman Werpachowski <61159095+romanwerpachowski@users.noreply.github.com>
Date: Thu, 2 Jul 2020 00:09:20 +0100
Subject: [PATCH] stat/distuv: provide complete test coverage for LogNormal
 distribution

---
 stat/distuv/lognormal_test.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/stat/distuv/lognormal_test.go b/stat/distuv/lognormal_test.go
index fee6e612a..fb47768dc 100644
--- a/stat/distuv/lognormal_test.go
+++ b/stat/distuv/lognormal_test.go
@@ -38,6 +38,14 @@ func TestLognormal(t *testing.T) {
 		checkProbContinuous(t, i, x, 0, math.Inf(1), dist, 1e-10)
 		checkProbQuantContinuous(t, i, x, dist, tol)
 		checkMode(t, i, x, dist, 1e-2, 1e-2)
+
+		logProb := dist.LogProb(-0.0001)
+		if !math.IsInf(logProb, -1) {
+			t.Errorf("Expected LogProb == -Inf for x < 0, got %v", logProb)
+		}
+		if dist.NumParameters() != 2 {
+			t.Errorf("Mismatch in NumParameters: got %v, want 2", dist.NumParameters())
+		}
 	}
 }