Add an example BED where the source graph is not available

exampleData/chunk-without-source/chunk.vg

@@ -0,0 +1,162 @@
+VG�%
+g
+cAGACGGAGTCTTGCTCTTGTTGCTCAGCCTGGAATGCAATGGCACGATCTCAGCTCACTGCAACCTCCACCTCCCGGGTTCAAGCAATTCTCCTGCCTC
+g
+cAGCCTCCCAAGTAGCAGGGATTACAGGTGCCTGCCACCATGCCAGGCTAATTGTTTTTTCTTTTTTTTCAGATGGAGTCTCACTCTGTCACTCAGGCTG
+g
+cGATTGTGATGGTGTGATCTCAGCTCACTGCAACCTCAACATCCTGGGTTCAAGCGATTCTCCTGCCTCAGTCTCCCAAGTAGCTGGGACTACAAGTGCG
+g
+cTGCCACCATGCCTGGCTAATTTTTTTTAGTATTTTTAGTAGAGATGGGGTTTCGCCATATTGGCCAGGCTGGTCTCAAACTCCTGATGTCAGGTGATCC
+g
+cGCCCTGAGGCTGAGGCAGGAGAATCATTTAAACCCAGGAGGCGGAGGTTGCAGTGAGCCAAGACTGGGCCACTGCACTCCAGCCTGCTAAGTGACAGAG
+g
+cTGAGACTCCACCTCAAAAAAAAAAAAAAAAGGCAATGCTTCAGGACATAAGGCCTTGCTCTGAAGAGGCCCTAGGAGTGACTCCTGGTGACAGTGAAAG
+g
+cCCCACAGCCTCTGGCAACTGTATTAACATGAACTTCAATCTGTTAAAGGAAAGCCACCAGGAAAACAGCACTGTAATTTAACGATGTGGAAAAATGTAT 
+g
+cGTAATATCTTAAGGAAAAAAGCAAAACAGTGTAATTATGATCACATTTTATAAAATACACGTGTATATATACGCACATATGCCTGGTGGAGTTTTATGG!
+g
+cTGATCATCTCCAAGTGGTGGAATTACTGGGATTATTTTATTGTTTTTGTGTAAATTTATACTTTCTTTTTTCTTTTTGAGACACGGTCTCGCTCTGTCG"
+g
+cCCCAGGCTGGAGTACAGTGGTGTGATCGTGGCTCACTGAAGCATCAACCTCCTGAGCTCAAGTGATCCTCCCACCTCAGCTTCCCAAGTAGCTGCGACT#
+g
+cACAGGCATCTGCCACCACACCCAGCTACTTTTTAAATTTGTTGTACAGATGAAGTCTCCTTATGTTGCCCAGGCTGGTCTCGAACTTCTAGGCTCCCAC$
+g
+cCTTGACCTCCATCTTGACCTCCCAAAGTGCTGGAATTATAGGCATGAGCCACCATGCCCGGCCTTGATTTATGTTTTTGTGATGAACATTCATATCTTA%
+g
+cCTCCCACCCCATGGAAACAGTTCATGTATTACTTTTACAATATAAAACAAATAACAATAAAAACATCAAAAAGACATTTTAGCCATTCATTCAACAAAT&
+g
+cATTTAAAATGTGCCAAGAACTGTGCTACTCAAGCACCAGGTAATGAGTGATAAACCAAACCCATGCAAAAGGACCCCATATAGCACAGGTACATGCAGG'
+g
+cCACCTTACCATGGAAGCCATTGTCCTCTGTCCAGGCATCTGGCTGCACAACCACAATTGGGTGGACACCCTGGATCCCCAGGAAGGAAAGAGCATTCAA(
+g
+cAGTGTCAAAGTAGGACTACTGGAACTGTCACTTCATCATTTTTTTTGTTTGTTTTTGAGACAGGGTCTTGCTCTGTCACCCAGGCTGGAGTGCAGTGGT)
+g
+cGTGATCTCAGCTCACTGCCACCTCTGCCTCCTGGGCTCAAGCAATCCTTCCATCTCAGCCTCCTAAGTAGCTGGAACTACAGACACGTACCACCACCCC*
+g
+cTGGCTAATTTTTTTGTATTTTTGGTAGAGACAGGGTTTTGCCATGTTGCCCAGGCTGGTCTCAAACTCCTGGGCTCAACTTCACCCCCGGGATTATAGG+
+g
+cCATGAGCCACCGCACCCAGCCTTGGCTAATTTTTAATAATTTTTTTGTAGACATGAGGTCCTACTGTATTGCCCAGGCTGGTCTTCAGCTCCCAGGCTC,
+g
+cAAGCGATTCTCCCACCTTGGCCTCCCAGTGTTGTGATTACAGGGGTGGGGCACTGGCCCAGCCCATCATTTCTCTCTCTCTCTTTTTTTTTGAGACGGA-
+g
+cGTCTCGCTCTGTCGCCCGGGCTGGAGTGCAGTGGCGCGATCTTGGCTCACTGCAACCTCCGCCTCCGGGGTTCAAGCGATTCTCCTGCCCCAGCCCCTC.
+g
+cAAGTAGCTGGGACTACAGGCGTGCGCCCCTACGCCCAGCTAATTTTTGTATTTTTAGTAGAGACGGGGTTTCGCCATGTTGGTTGGCCAGGATGGTCTC/
+g
+cGATCTCTTGACCTCGTGATCTGCCCACCTCAGCCTCCCAAAGTGCTGGGATTACAGGCGTGAGCCACCGCACCTAGCTTTTCTCTCTCTCTCTTTTTTT0
+g
+cTTTTTTTTAGACAAAGTCTCACTCTGTCACCCAGTCTGGAGTGCAGTGGTGCAATCTTGGCTCACTGCAACCTCTGCCTCCCACGTTCAAGCGATGCTC1
+g
+cACACCTCAACTTCCCAAATAGCTGGCATTACAGGCATGCTCCACCAGGCCTGGCTACTTTTTGTTTTTTTTTTTTTAGTACAGATGGGGTTTCACCATG2
+g
+cTTGGCCAGGCTGGTCTCAAACTCCTGACAAGTGATCCACCTGCCTCGGCCTCCCAAAGTGCTGGGATTACAGACATGAGCCACCATGCCCAGCCTCCAG3
+g
+cCCCATCATTTCTTGATGATTTGTTGAAACACAGTATGCTGGGGCAGTCACAGAGAGGAGGGGGAGGGACATATGGGAAAAAGAGTTAGAGGGAAAAAGT4
+g
+cCTTCCCTCAGTATATTTAATATGTGCAGTTCTCAAATCCTTACCCATCCCTTACAGATGGAGTCTTTTGGCACAGGTATGTGGGCAGAGAAGACTTCTG5
+g
+cAGGCTACAGTAGGGGCATCCATAGGGACTGACAGGTGCCAGTCTTGCTCACAGGAGAGAATATTGTGTCCTCCCTCTCTGACAGGGCACCCAATACTTA6
+g
+cCTGTGCCAAGGGTGAATGATGAAAGCTCCTTCACCACAGAAGCACCACACAGCTGTACCATCCATTCCAGTTGATCTAAAATGGACATTTAGATGTAAA7
+g
+cATCACTGCAGTAATCTGCATACTTAACCCAGGCCCTCTACCCTACACTCTCCGGATGAAGGCTTATAGCAAGACCTCTCAATGGGAGAGTCTGTCTCTC8  !!""##$$%%&&''(())**++,,--..//00112233445566778�
+GI262359905[76167]
+8 
cc(

+7 
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+6 
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+5 
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+4 
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+3 
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+2 
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+1 
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+0 
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+/ 
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+
+. 
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+- 
cc(
+, 
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++ 
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+* 
cc(
+) 
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+( 
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+' 
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+& 
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+% 
cc(
+$ 
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+# 
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+" 
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+! 
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+  
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+ 
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+ 
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+ 
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+ 
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+ 
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+ 
cc(�
+GI528476558[1937]
+cc(

+cc(
+cc(
+cc(
+cc(
+cc(
+ cc(
+!cc(
+"cc(	
+#cc(
+
+$cc(
+%cc(
+&cc(
+'cc(
+(cc(
+)cc(
+*cc(
++cc(
+,cc(
+-cc(
+.cc(
+/cc(
+0cc(
+1cc(
+2cc(
+3cc(
+4cc(
+5cc(
+6cc(
+7cc(
+8cc(�
+ref
+cc(

+cc(
+cc(
+cc(
+cc(
+cc(
+ cc(
+!cc(
+"cc(	
+#cc(
+
+$cc(
+%cc(
+&cc(
+'cc(
+(cc(
+)cc(
+*cc(
++cc(
+,cc(
+-cc(
+.cc(
+/cc(
+0cc(
+1cc(
+2cc(
+3cc(
+4cc(
+5cc(
+6cc(
+7cc(
+8cc(

exampleData/chunk-without-source/chunk_contents.txt

@@ -0,0 +1,5 @@
+chunk.vg
+chunk_0_ref_1955_5023.annotate.txt
+chunk_0_ref_1955_5023.gam
+regions.tsv
+tracks.json

exampleData/chunk-without-source/regions.tsv

@@ -0,0 +1 @@
+ref	2000	3000	chunk_0_ref_2000_3000.gam	chunk_0_ref_2000_3000.annotate.txt

exampleData/chunk-without-source/tracks.json

@@ -0,0 +1,18 @@
+[
+  {
+    "trackFile": "exampleData/nonexistent.vg",
+    "trackType": "graph",
+    "trackColorSettings": {
+      "mainPalette": "plainColors",
+      "auxPalette": "greys"
+    }
+  },
+  {
+    "trackFile": "exampleData/stillnotareal.sorted.gam",
+    "trackType": "read",
+    "trackColorSettings": {
+      "mainPalette": "blues",
+      "auxPalette": "reds"
+    }
+  }
+]

exampleData/no_source.bed

@@ -0,0 +1 @@
+ref	2000	3000	region with no source graph available	chunk-without-source