test: add edge case tests for StripScheme

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: sallyom <somalley@redhat.com>

Author: sallyom

pkg/common/common_test.go

@@ -74,6 +74,21 @@ func TestStripScheme(t *testing.T) {
 			input:    "10.0.0.1:4317",
 			expected: "10.0.0.1:4317",
 		},
+		{
+			name:     "schemeless with double slash",
+			input:    "//192.168.1.1:80",
+			expected: "192.168.1.1:80",
+		},
+		{
+			name:     "uppercase scheme",
+			input:    "HTTP://localhost:4317",
+			expected: "localhost:4317",
+		},
+		{
+			name:     "port only",
+			input:    ":9090",
+			expected: ":9090",
+		},
 	}
 
 	for _, tt := range tests {