From c12c82b2f6efe51d87b2386c0cb0deae0ba1a208 Mon Sep 17 00:00:00 2001
From: Amshith Nair <amshithnair@gmail.com>
Date: Sun, 22 Mar 2026 08:54:02 +0530
Subject: [PATCH] =?UTF-8?q?test(mathx,stringx):=20add=20missing=20edge=20c?=
 =?UTF-8?q?ase=20tests=20for=20CalcEntropy=20and=20=E2=80=A6=20(#5471)?=
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---
 core/mathx/entropy_test.go   |  7 +++++++
 core/stringx/strings_test.go | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/core/mathx/entropy_test.go b/core/mathx/entropy_test.go
index 03db018d1..1f477acac 100644
--- a/core/mathx/entropy_test.go
+++ b/core/mathx/entropy_test.go
@@ -29,3 +29,10 @@ func TestCalcDiffEntropy(t *testing.T) {
 	}
 	assert.True(t, CalcEntropy(m) < .99)
 }
+
+func TestCalcEntropySingleItem(t *testing.T) {
+	m := map[any]int{
+		"only": 42,
+	}
+	assert.Equal(t, float64(1), CalcEntropy(m))
+}
diff --git a/core/stringx/strings_test.go b/core/stringx/strings_test.go
index b4681fe5c..0adcaf3ab 100644
--- a/core/stringx/strings_test.go
+++ b/core/stringx/strings_test.go
@@ -29,6 +29,40 @@ func TestContainsString(t *testing.T) {
 	}
 }
 
+func TestHasEmpty(t *testing.T) {
+	cases := []struct {
+		args   []string
+		expect bool
+	}{
+		{
+			args:   []string{"a", "b", "c"},
+			expect: false,
+		},
+		{
+			args:   []string{"a", "", "c"},
+			expect: true,
+		},
+		{
+			args:   []string{""},
+			expect: true,
+		},
+		{
+			args:   []string{},
+			expect: false,
+		},
+		{
+			args:   nil,
+			expect: false,
+		},
+	}
+
+	for _, each := range cases {
+		t.Run(path.Join(each.args...), func(t *testing.T) {
+			assert.Equal(t, each.expect, HasEmpty(each.args...))
+		})
+	}
+}
+
 func TestNotEmpty(t *testing.T) {
 	cases := []struct {
 		args   []string