Add integration tests for show command output formats

Author: afarber

test/show/CMakeLists.txt

@@ -0,0 +1,21 @@
+#-----------------------------------------------------------------------------
+#
+#  CMake Config
+#
+#  Osmium Tool Tests - show
+#
+#-----------------------------------------------------------------------------
+
+function(check_show _name _input _output _options)
+    check_output(show ${_name} "show ${_options} show/${_input}" "show/${_output}")
+endfunction()
+
+
+#-----------------------------------------------------------------------------
+
+check_show(debug input.osm output-debug.txt "-f debug")
+check_show(opl input.osm output-opl.opl "-f opl")
+check_show(xml input.osm output-xml.osm "-f xml")
+
+
+#-----------------------------------------------------------------------------

test/show/input.osm

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+<?xml version='1.0' encoding='UTF-8'?>
+<osm version="0.6" upload="false" generator="testdata">
+  <node id="1" version="1" timestamp="2021-01-01T00:00:00Z" changeset="1" uid="1" user="test" lat="52.5" lon="13.4">
+    <tag k="name" v="Test Node"/>
+    <tag k="amenity" v="restaurant"/>
+  </node>
+  <way id="2" version="1" timestamp="2021-01-01T00:00:00Z" changeset="1" uid="1" user="test">
+    <nd ref="1"/>
+    <nd ref="3"/>
+    <tag k="highway" v="primary"/>
+    <tag k="name" v="Test Way"/>
+  </way>
+</osm>

test/show/output-debug.txt

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+header
+  multiple object versions: no
+  bounding boxes: 
+  options: 
+    generator = testdata
+    version = 0.6
+    xml_josm_upload = false
+
+=============================================
+
+node 1 visible
+  version:   1
+  changeset: 1
+  timestamp: 2021-01-01T00:00:00Z (1609459200)
+  user:      1 "test"
+  lon/lat:   13.4,52.5
+  tags:      2
+    "name"    = "Test Node"
+    "amenity" = "restaurant"
+
+way 2 visible
+  version:   1
+  changeset: 1
+  timestamp: 2021-01-01T00:00:00Z (1609459200)
+  user:      1 "test"
+  tags:      2
+    "highway" = "primary"
+    "name"    = "Test Way"
+  nodes:     2 (open)
+    0:          1
+    1:          3
+

test/show/output-opl.opl

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+n1 v1 dV c1 t2021-01-01T00:00:00Z i1 utest Tname=Test%20%Node,amenity=restaurant x13.4 y52.5
+w2 v1 dV c1 t2021-01-01T00:00:00Z i1 utest Thighway=primary,name=Test%20%Way Nn1,n3

test/show/output-xml.osm

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+<?xml version='1.0' encoding='UTF-8'?>
+<osm version="0.6" upload="false" generator="testdata">
+  <node id="1" version="1" timestamp="2021-01-01T00:00:00Z" uid="1" user="test" changeset="1" lat="52.5" lon="13.4">
+    <tag k="name" v="Test Node"/>
+    <tag k="amenity" v="restaurant"/>
+  </node>
+  <way id="2" version="1" timestamp="2021-01-01T00:00:00Z" uid="1" user="test" changeset="1">
+    <nd ref="1"/>
+    <nd ref="3"/>
+    <tag k="highway" v="primary"/>
+    <tag k="name" v="Test Way"/>
+  </way>
+</osm>