src/bed_handler/config.py: add a test file corresponding to a genome

src/bed_handler/config.py

@@ -41,4 +41,5 @@ class TestConfig:
     gene_bed = base / "genes.bed"
     exon_bed = base / "exons.bed"
     small_bw = base / "small.bw"
-    sipp_vs_ctcf = base / 'Sipp_exon_vs_CTCF.csv'
\ No newline at end of file
+    sipp_vs_ctcf = base / 'Sipp_exon_vs_CTCF.csv'
+    test_fasta = base / "test_genome.fa"