--- a
+++ b/tests/testthat/fasta/x.fasta
@@ -0,0 +1,99 @@
+>CP021420.1 Akkermansia muciniphila strain YL44 genome
+ATTCCGAAGTGCTGGATGCGGGTCAGACGGGCGGCATTGATGAAATGTCCATCGTCATTGAGCACGAAGA
+CCTTCCGGCTCTGGCTGCCGGAAAGAAGATCACGCTGACCCTGGAAGCCTCCGGGGATGGCGATAGCTGG
+GCCGAGGTGCCGGGGTTCTCCCTGGCATCTGCGGCGGGAGAAGAAGCGGGAGCTCTTGCGAACAGCATTG
+CCGGACGGGCTCCCTATGGCATGGGACGCTACATCCGGCTCAAGGCTGTGGCAGACACCGCCAGCGGCGA
+CAATACCGCCGCCAAATGTGAACTCTCCATCCGCGTGTAACCGTCATGGCGCTGGTCCAGATCACGGAAA
+ACACTCTGCGGGCCTTCCTGGCGGACGCTGAAATCGCGGCGTTTGACTCGGCAGGAGCGGAAGGGGATTA
+CCCGGAACGGGCCGGCGCCCTGATCAGGACGACGTGCAACCTCGTCGCCGGAATCGTTAATTCTTCCGGG
+AAATATCCCATCCTGGCAACAGGTCAGGACAGGGTGCCGGAAGAACTGGAACACCCGACGCTTGTCTGGA
+TCCGTCACGCCATGCTGGCCGATTTGCCCGACATGGGCGACCTGGAAGGATCCCCCCGCGCCAAGCAGTA
+CAGCACGGCAAGCGAGATTTTCCGGGCCGTCCGGGAGGGCAGGTTTTATCTTGCCCCCTACGATTCGGAG
+AGTGGCGGCGTAGAGGTGTACGGAGCCGGGCAGCCCTATCAGAACTGGTGTGAACTATGAGTGCTTTACC
+CGCAAGCCCGCGCATCGCCGCCGGGGAAAAAATCTATCGGAAAATCATTACCCTGTGTGCCCGTTACAAC
+AGCGGGGAGGATCCCGGCATTGTCATGCGCGGATGGGATGCCGACCTGAAAACCCTGATTACTCAAAAGC
+TGTCCAGGCTGGGAATCTGCGTGCTGGTATGTGCCCCGAAACGAAAACCCCTGCAGGAACAGGGAGGCAC
+GAATGCCGTCATTCTGACAACAAAAATCGTCATTGAAAGCAATCCCCTCCTGAAAAAATCCGACGCAACC
+GCCGTCCTCGGCTGGGATGCGGACGATCTGGCAGACCTGCTCGCCATCGGGCTTGACGGGCATCGGGAAC
+CGGGCTGGCTCACCTGCATGAAGCTCAAAGTCACAGGCACGGAGTCAAGCCGGGTACAGATGGCCAACAA
+GGCTGTTACGCTCACCCTTGAACAAACCACCATATTGAAACATGGCAACTAAACCCACCATCGCCGCGGC
+CCAGGAGGCCGCTACTGCTCCGGCGCCCCGCATCGTCAAATGCCGGGTGGCCGTCAACAAGCTGGAACTC
+CCTCACGGCATCGCCGCGCGGGGAAAAATCGTCCACATCCCGGAAGACGTGTACAAAGTCCACGCCGACG
+CCGGGAAAGTGACCTTTATTGACTACGTAAGAAGCTAACAACCATGTCAGAACTCTACAACAAGGAAATG
+CTGGTCGGCACCTTTCTCGACCTGTGCCCGTTCGGAACGACAGTCACGGCCGGAAGCGGCACGGACACGG
+TGGACGAGCATTTCAAGCCGGCGAAGGACTCCGACGCCTGGATGATTGCCAACGAAGTCATCGACTACAA
+AATCACGCCGACCACGGAAGACGACGCCCGCACGGTATTTTCCCGCGACACGACCTCCTATGTGACGCGG
+AAGAACACCAAAGTGACGGGCAACACCATCGAGATTAACTCCACGGAGGTTAATCCGGTCTGCTGGCAGG
+TGATTTACCAGTGCGACAGGCTGGAAGCCGGGAAGGAAGTGCAGCCCTTTTCCCGGAACATCTACGGGCA
+AAAGGTATGGGCGCGCCTCACCAAATACCAGGAAGACAAAAAAGAAATGATGGTCCTGGAAGTCGCGGCG
+CTGCTCAAGGTGGAAATCCCCACGGAAAACAACAAGCTGATCACGCCGAAATTGACGCTTGAAGTGATAC
+CGTCCTCCCTGAATTCCCTGACGCCCACGGAAGAAATCGCCTTCCCGGCCTCCGACGGGGCATGACAGCC
+GGGGCCGCCCCTCTGTTTGCATGGGGAGGGGCGGCCCCTGTTTCCCCCACCATTATTGAGGCATGGACAC
+GACCGTCTCTCCCTTTTCCATTACCTTTGACGGGCGCCCCGTCGTGCGCGCCGGGGAATTCCTGCTCGAC
+TCCCTGCCGGAACACGCTTTCCCGGTGCAGTTCGGCACGTCCGCCACGCCGATCATCAACAGCCCGTTCC
+CCAGGCTGGACGCATTCGGCAACCTGTCCCTGTCCTTCACCATCTCCACCGTGCGGGAATGCGCCTCCCA
+CATGGACGCGTGGAACGCCTTTTACGAATGGCTCAACGAATGGAAAACGGCGGGGAAAGGGGAATGGGCC
+TGGACCGACGCCTGCGGCCGTGAACAGCGCTTTGAAGCCATCATCGCCGACGCCGAGCCGAAGGTTCAGG
+GCCTGCGCCTTATTGTCTCCTACAACTTCACCCTGGGCCGCCCCCTATGAAAACCATTGACGTATCTTCC
+GCCGACTTCCTGGACATGGCCGAAAGCCCGTCCTACAACCGGCTGTCCTTCGGGGGAGCCTCCGTCTCCT
+TCCGCGTGCCTGTCTCCCGGTTTGCCTCCTGCCCGTTTGAAGAAGGGGAAATAGTGAAAGTCGTCTGGCG
+CGGGAAAACCCTGCTCATCGGCCCGGTCATCGACCTGGAACATTCCCTTGAAGGAACCTCCGAGAGCTGG
+GACATCAGGATTTGCGATTACTGGTGGAACCTGAGCAACATCCAGTACTTCGTGAATGGCCGCGCCAACG
+GCATCTTTGCCGAATACCGCCGGGGCACAGGCGGAAGCGGTCAGGAAAAACAGGCGACCGCGAACATCCG
+GGACGCCCTCTCCGGAGTTCTGGACCACGCCGTCAGCACGGCCCTAGTTCCCATCAAATACGACCTCCGG
+ATAGACAAGGATGCCGAAATCATTCCGTTTGCCTACTCGTCGGAAACGTATGCCTCCCTGCTTTCCCAGA
+TCCAGAAATGGCGCCCCAATATGGCCGCGTGGTTTGAATACGGCGCGGACGACTCCGCCACGCTGGTCAT
+TGCCGACCATGCCGCCCTGCCGGATGTCGTGCTCGACTTGTCCGCCGTGGACGTAAGCGCCCTGTCCCTC
+AAGGCGCGTCCCGATCTGGTGCCTCCGGCCGTGGGGCTGACCTGCAACGCCTCCGTTGTCTCCCGGATTC
+AGCGCGCGCTGGCCGTCTATCCCTCAGGCGCCTCCCTGTCCCAGCCCTATGTGGTGACGGCGGAAGTGGA
+CGTTCCGGGCGGCGTCAAGGTCTCCGACACTGCCGGGCAATACAGCCCTGCGGAAACGGACTCGCTGGGT
+TACGACGCCCCGCGGATGATTGTCCGGGGAGACAAATTCCCGACCGGCACGGCCCAGTGGGCGGCCCGCG
+TCAAACGCTGGGCTCCGGCCCTGGAGGATTGCGCCGGCCTGGAAGTGGCGGCCAGTCCGAAAATTACGTC
+CATCACGCCGGCTGACGCGGAACACCGGGGATACAGCAATGCGGCCATCACCCACGAACTGACCTCCGGC
+CAGATAAACGGCAGGAGCGCAAGAATCAAATGGGGCAAGGTCCGGGTGGATTTGCGGGTGCGGGCGACGG
+AGCCCCCCGACACGGTGAAGCAATATTTTCCGGAATACGGCGGAAAATCCGGAACCGGGGACCGCTGGAT
+CGGAACATTGACGTTTGAAGTGACCACGACGAATGTCGGCTACGCGTCCTACCGGGTGGACAGGGCAGGG
+ACGGTGGAAAACGTATCCGACGACGGCGGAAGCCCCGGAGACGACGAAACATCGGGCAGCTACGACACCT
+CCGCACTGTATAAAAATTTCCTGAAATCCTACTACGAAGCCACCCGCGCGCTGCCCTATGACGGATCCGC
+GACCGTCCACGACGACTTTGACCAGGTCTGCGGGGGGCGCCTCTCCATCACGGGAGGATTGAAAGAATGG
+GAAACCATGCGGTCCGTCATCCAGGAAATATCCCTCGACCTTAAAACGGGAGTTTCCGACGTGACGGTGG
+GGGCCCCGGAACAGATCTCCCTGCAGGACTCCATCGACCGGAGCCGGCAGCTTGCCGAGGCGCTGCGCCG
+GACGGCCTGGGCGGACTCGTCCACGTCTTCCGGGGGAGGTTCTTCGGGCGGGGGATCCGGCAGCGGAGGC
+GGAGGCTCTTCCGGAGCGGACGATGAAGTCCCGGAGCTTCCCAGCGTCGGGCCGTCCGTAAAACTGCTGC
+AGGCCCAGGAGCCTCCCGCGTGGGGAACAAGCGCCGTTGAGGTGGGATTCCAATGCCGCCTGTCTTACGG
+GAGCGACGGCAAGGTGTCCGATGCCTACATCCGCCAGGGGAAGGCCGTTTATGCCGGCAGCTACATCGGG
+GGGCTGCTTCCGGAAGGGGACGGCTCCGGGGGATGGGTGAAAAGCCCCGTCACTTCCGGGGAAATCTGGC
+TCAAGATCCAGTTGGACAAGGACACGAAATACCTCGGATCCTCTCTGTCCGCCGCGGGCGGCGTCTCCGA
+CCCCGTCAGGCTCGCGGAGGAAGACCGGAAAACCCCTTATGAATATTATTTCCATCTGGCCACCATCGAC
+GGCAACAAGGTGGTGCAGCACCAGGCGGGCACGGTTTATCTCCAAATCCACCCGGGAACCTTCGGCCCCT
+CCGGAATGTCATGATCAGGATATACACCTTCACCTATGCCGGAGACGCGCAGGAAGCCGTGGCCTGCGTC
+CGGTGCGCCAGGACGGCTCTTCCGGAGGCGGTAGTTACGGTGGTGGACGACAGCGCCGCCCCGGTGCCCC
+CGGAGGACAAGAGGGCCCTTGTAGCGCATGGGGCGCGGTATCGCCGGAGTTCTTTCCCCCGCTGCGGCAA
+CCTGCGCGGCCCGGAGTGCGTCCGGGGAATTATTGCCACGCTGGCCGGGGGGGCGGCGGATGGCGACACC
+GTCGTCAAGATTGACTCCGACACGGCGCTTCTGTCGGGCGGCTGGGTCAGGGAAATGAAACACAACGGGC
+TTGCGCTGCACGCCGCCGGGTACCTGGTCCCCCGGAACCCGTCCGAACGGTCCGCCTACGGAAATTGCTA
+CGCCCTGAGCGGACGGGCGTCCAGGATGGCCGCCGAAGCGCTGGAATGCGCCGCCATCCCCCCGCTCGCC
+CCGGAAGACCTCACCATCTGCCGGGCCGTCATGGATGTCTGCGGCCGGGAGCGTGTCCGGCTTGACGAGC
+CGTGGACGCCCCTGAACCGGGCCGGGCGGTGGTCCTGGTGGAACTGGGACAGCCGGACGGCGAACCCGGA
+GGATTATGCCCGCAGCTATGACGTGGTGAGCGTCGGCAATCCCCGGCCTCCCCACGTTCCCAAAAACGCC
+CGCCGGGAAGTCATGCGCGCTCTGTGCGACGCCCGTTTGAATCTCAACAGCCAATCAATAGAACCATGTC
+AGACAGAAACCTGAACATCAATATCAGAACGACCGCCGACACCTCCGGCGCCACTCAAGCCGCCGCATCC
+TTGGACAGGATACGGGAATCCGGCGAATCCATTTCGCAGACTTCCGGCGTGATGGACCGGATCGCAGATT
+CTCTTTCCCGTGTCAAAACGGCTGCCGGGGAAACCGGCGACGCCATGAAGGACGGCATGGGCGCGGAATA
+TGAAAAAGCCCTGGAAAACGCCAATTCCAAACTTGACCAATACGCCGACGCCCTGACCGCCGCCGGCTCC
+CGGATGAAAGCCGCCTTTAACGACAACCCGGGATTGACCGGGTTTATTGACGAAGTCACCAACGCCGTGC
+TGACCTCCGAGGAATTCAGGAAGAAGCTGGAACAGGTGGATGACGTCTTTGAAGTCCTCAACAACAAAAT
+GTCTGATTTGGATCTCGGGGCGAAATGGGGAGATGACCTTGACGAAAACCTTCAACAAATCATCGACGGC
+TACAACAAGGAAATGGACGCGGCCGACAAGGCCGCGGAAAAGGCGGAAGCCGCGGAGGCCCGGAAGCAGC
+AGGCAGCCGCCGCCACGGTGGAACGGCTGGAGGCCAACAACCGCCGCGCCTCTGCCACCTATGAGGAATT
+GCAGGCCGAATTGGAATCCTACATTGCCAAGTTGGAAGAAGCCCGGAAGGCCGGGGACAACGTGGCCCAG
+GCGGACGCCCTGAAGAATATCCAGGACCTGGGACGGCGCATCAAGACGGCCGGAGATGCCGGGCAACTCA
+CCTCCACGCAGGTCAAGGGGCTGGCGGGGCAGATTACCATTGCGGCAACGCGCATCCTGGGCATGTCCAG
+CTCGCTCCGGGGAGCTATCCCGTTCATTCATTTATTCGGAACCACCATCAAAACGGCGATGGGGCCGCTG
+GGCTGGGCCATGCTGCTGATCCAGGGGCTGACCGCCGGCATTACCGCTTTGATTGACCACTTCAAGGCCA
+AAAGCGACGAATTGGAGCGGCAGGCGGAACAGGCAACCGAAAGGATGAAAAAACGTGCCAGGGATACTGC
+CGAATCTATCAAAAAGAGTTATGAAGCTATCCAGGACTATAACAAAGCCGACCGAACACAGGAAATCAAC
+AAAGGGTTTGAAGACTTTGTGAAGGGCATTACGACGCAATACCGTTTGCAAACGCAGGAGATTGAACGGC
+AAATCCAGCTACGGAGGGAGGAAGCCGCCCGCCAGAAGGGGATTGACACGCAGGAAGCCGAACTTGCCCG
+CGTGAAGTTGGACAATGACTTTGAAGACGGAAAAATCACCGAGAGGCAACGGGACTACGGCATGATGATG
+ATCAACCAGAATCTTGACGATAAAATACGCCGCCGAGATCTGGAAGTAGCGCAGAAGGAATTCATGGACT
\ No newline at end of file