Convex Hull processing tests (#3876)

Add two tests for convex hull

python/plugins/processing/tests/testdata/custom/count_unique_points.gfs

@@ -0,0 +1,20 @@
+<GMLFeatureClassList>
+  <GMLFeatureClass>
+    <Name>count_unique_points</Name>
+    <ElementPath>count_unique_points</ElementPath>
+    <GeometryType>1</GeometryType>
+    <SRSName>EPSG:4326</SRSName>
+    <DatasetSpecificInfo>
+      <FeatureCount>26</FeatureCount>
+      <ExtentXMin>-0.18351</ExtentXMin>
+      <ExtentXMax>9.58625</ExtentXMax>
+      <ExtentYMin>-2.40588</ExtentYMin>
+      <ExtentYMax>5.73133</ExtentYMax>
+    </DatasetSpecificInfo>
+    <PropertyDefn>
+      <Name>unique</Name>
+      <ElementPath>unique</ElementPath>
+      <Type>Integer</Type>
+    </PropertyDefn>
+  </GMLFeatureClass>
+</GMLFeatureClassList>

python/plugins/processing/tests/testdata/custom/count_unique_points.gml

@@ -0,0 +1,169 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ogr:FeatureCollection
+     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+     xsi:schemaLocation=""
+     xmlns:ogr="http://ogr.maptools.org/"
+     xmlns:gml="http://www.opengis.net/gml">
+  <gml:boundedBy>
+    <gml:Box>
+      <gml:coord><gml:X>-0.1835059209628658</gml:X><gml:Y>-2.405884426380911</gml:Y></gml:coord>
+      <gml:coord><gml:X>9.586251045346421</gml:X><gml:Y>5.731328294905413</gml:Y></gml:coord>
+    </gml:Box>
+  </gml:boundedBy>
+                                                                                             
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.0">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>-0.183505920962866,2.287680278060103</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>10</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.1">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>1.372512812574644,1.496916659377106</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>10</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.2">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>0.607257697720131,-0.084610577988888</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>5</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.3">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>0.071579117321972,0.629627529208658</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>10</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.4">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>2.41836146954248,2.542765316344942</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>6</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.5">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>2.545903988684898,3.639630980969744</gml:coordinates></gml:Point></ogr:geometryProperty>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.6">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>2.290818950400061,5.654802783419962</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>2</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.7">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>2.698955011655801,5.731328294905413</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>2</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.8">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>2.520395484856414,5.246666722164222</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>1</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.9">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>4.561075791135116,4.277343576681838</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>1</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.10">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>4.943703348562373,4.481411607309709</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>2</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.11">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>2.928531546112155,1.190814613435302</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>5</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.12">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>4.050905714565441,0.910221071321979</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>5</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.13">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>4.841669333248438,0.195982964124434</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>5</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.14">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>4.892686340905406,-1.206984746442174</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>3</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.15">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>3.821329180109087,-1.155967738785206</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>5</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.16">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>3.821329180109087,-0.390712623930693</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>2</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.17">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>3.260142095882444,0.042931941153531</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>5</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.18">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>2.954040049940638,-0.77334018135795</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>5</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.19">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>6.958875151012592,0.527593513894724</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>1</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.20">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>8.030232311808911,0.527593513894724</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>7</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.21">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>9.076080968776745,0.349033987095337</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>6</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.22">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>9.586251045346421,-1.58961230386943</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>5</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.23">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>8.336334357750715,-1.462069784727012</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>4</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.24">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>8.23430034243678,-2.405884426380911</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>3</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:count_unique_points fid="count_unique_points.25">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>6.831332631870172,-1.997748365125171</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:unique>2</ogr:unique>
+    </ogr:count_unique_points>
+  </gml:featureMember>
+</ogr:FeatureCollection>

python/plugins/processing/tests/testdata/custom/points_hull.gfs

@@ -0,0 +1,30 @@
+<GMLFeatureClassList>
+  <GMLFeatureClass>
+    <Name>points_hull</Name>
+    <ElementPath>points_hull</ElementPath>
+    <GeometryType>1</GeometryType>
+    <SRSName>EPSG:4326</SRSName>
+    <DatasetSpecificInfo>
+      <FeatureCount>9</FeatureCount>
+      <ExtentXMin>0.00000</ExtentXMin>
+      <ExtentXMax>8.00000</ExtentXMax>
+      <ExtentYMin>-5.00000</ExtentYMin>
+      <ExtentYMax>3.00000</ExtentYMax>
+    </DatasetSpecificInfo>
+    <PropertyDefn>
+      <Name>id</Name>
+      <ElementPath>id</ElementPath>
+      <Type>Integer</Type>
+    </PropertyDefn>
+    <PropertyDefn>
+      <Name>id2</Name>
+      <ElementPath>id2</ElementPath>
+      <Type>Integer</Type>
+    </PropertyDefn>
+    <PropertyDefn>
+      <Name>hull</Name>
+      <ElementPath>hull</ElementPath>
+      <Type>Integer</Type>
+    </PropertyDefn>
+  </GMLFeatureClass>
+</GMLFeatureClassList>

python/plugins/processing/tests/testdata/custom/points_hull.gml

@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ogr:FeatureCollection
+     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+     xsi:schemaLocation=""
+     xmlns:ogr="http://ogr.maptools.org/"
+     xmlns:gml="http://www.opengis.net/gml">
+  <gml:boundedBy>
+    <gml:Box>
+      <gml:coord><gml:X>0</gml:X><gml:Y>-5</gml:Y></gml:coord>
+      <gml:coord><gml:X>8</gml:X><gml:Y>3</gml:Y></gml:coord>
+    </gml:Box>
+  </gml:boundedBy>
+                                                                                                                                                               
+  <gml:featureMember>
+    <ogr:points_hull fid="points.0">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>1,1</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:id>1</ogr:id>
+      <ogr:id2>2</ogr:id2>
+      <ogr:hull>2</ogr:hull>
+    </ogr:points_hull>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:points_hull fid="points.1">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>3,3</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:id>2</ogr:id>
+      <ogr:id2>1</ogr:id2>
+      <ogr:hull>3</ogr:hull>
+    </ogr:points_hull>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:points_hull fid="points.2">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>2,2</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:id>3</ogr:id>
+      <ogr:id2>0</ogr:id2>
+      <ogr:hull>3</ogr:hull>
+    </ogr:points_hull>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:points_hull fid="points.3">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>5,2</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:id>4</ogr:id>
+      <ogr:id2>2</ogr:id2>
+      <ogr:hull>3</ogr:hull>
+    </ogr:points_hull>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:points_hull fid="points.4">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>4,1</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:id>5</ogr:id>
+      <ogr:id2>1</ogr:id2>
+      <ogr:hull>2</ogr:hull>
+    </ogr:points_hull>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:points_hull fid="points.5">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>0,-5</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:id>6</ogr:id>
+      <ogr:id2>0</ogr:id2>
+      <ogr:hull>1</ogr:hull>
+    </ogr:points_hull>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:points_hull fid="points.6">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>8,-1</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:id>7</ogr:id>
+      <ogr:id2>0</ogr:id2>
+      <ogr:hull>2</ogr:hull>
+    </ogr:points_hull>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:points_hull fid="points.7">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>7,-1</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:id>8</ogr:id>
+      <ogr:id2>0</ogr:id2>
+      <ogr:hull>1</ogr:hull>
+    </ogr:points_hull>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:points_hull fid="points.8">
+      <ogr:geometryProperty><gml:Point srsName="EPSG:4326"><gml:coordinates>0,-1</gml:coordinates></gml:Point></ogr:geometryProperty>
+      <ogr:id>9</ogr:id>
+      <ogr:id2>0</ogr:id2>
+      <ogr:hull>1</ogr:hull>
+    </ogr:points_hull>
+  </gml:featureMember>
+</ogr:FeatureCollection>

python/plugins/processing/tests/testdata/expected/basic_statistics_float.html

@@ -0,0 +1,21 @@
+<html><head>
+<meta http-equiv="Content-Type" content="text/html;                     charset=utf-8" /></head><body>
+<p>Analyzed layer: polys</p>
+<p>Analyzed field: floatval</p>
+<p>Count: 5</p>
+<p>Unique values: 5</p>
+<p>NULL (missing) values: 1</p>
+<p>Minimum value: -100291.43213</p>
+<p>Maximum value: 44.123456</p>
+<p>Range: 100335.555586</p>
+<p>Sum: -100243.855674</p>
+<p>Mean value: -20048.7711348</p>
+<p>Median value: 0.123</p>
+<p>Standard deviation: 40121.333967334256</p>
+<p>Coefficient of Variation: -2.001186691073198</p>
+<p>Minority (rarest occurring value): -100291.43213</p>
+<p>Majority (most frequently occurring value): -100291.43213</p>
+<p>First quartile: 0.0</p>
+<p>Third quartile: 3.33</p>
+<p>Interquartile Range (IQR): 3.33</p>
+</body></html>

python/plugins/processing/tests/testdata/expected/basic_statistics_int.html

@@ -0,0 +1,21 @@
+<html><head>
+<meta http-equiv="Content-Type" content="text/html;                     charset=utf-8" /></head><body>
+<p>Analyzed layer: polys</p>
+<p>Analyzed field: intval</p>
+<p>Count: 5</p>
+<p>Unique values: 5</p>
+<p>NULL (missing) values: 1</p>
+<p>Minimum value: -33.0</p>
+<p>Maximum value: 120.0</p>
+<p>Range: 153.0</p>
+<p>Sum: 122.0</p>
+<p>Mean value: 24.4</p>
+<p>Median value: 2.0</p>
+<p>Standard deviation: 52.163588833591575</p>
+<p>Coefficient of Variation: 2.137852001376704</p>
+<p>Minority (rarest occurring value): -33.0</p>
+<p>Majority (most frequently occurring value): -33.0</p>
+<p>First quartile: 0.0</p>
+<p>Third quartile: 33.0</p>
+<p>Interquartile Range (IQR): 33.0</p>
+</body></html>

python/plugins/processing/tests/testdata/expected/convex_hull.gfs

@@ -0,0 +1,36 @@
+<GMLFeatureClassList>
+  <GMLFeatureClass>
+    <Name>convex_hull</Name>
+    <ElementPath>convex_hull</ElementPath>
+    <GeometryType>3</GeometryType>
+    <SRSName>EPSG:4326</SRSName>
+    <DatasetSpecificInfo>
+      <FeatureCount>1</FeatureCount>
+      <ExtentXMin>0.00000</ExtentXMin>
+      <ExtentXMax>8.00000</ExtentXMax>
+      <ExtentYMin>-5.00000</ExtentYMin>
+      <ExtentYMax>3.00000</ExtentYMax>
+    </DatasetSpecificInfo>
+    <PropertyDefn>
+      <Name>id</Name>
+      <ElementPath>id</ElementPath>
+      <Type>Integer</Type>
+    </PropertyDefn>
+    <PropertyDefn>
+      <Name>value</Name>
+      <ElementPath>value</ElementPath>
+      <Type>String</Type>
+      <Width>3</Width>
+    </PropertyDefn>
+    <PropertyDefn>
+      <Name>area</Name>
+      <ElementPath>area</ElementPath>
+      <Type>Real</Type>
+    </PropertyDefn>
+    <PropertyDefn>
+      <Name>perim</Name>
+      <ElementPath>perim</ElementPath>
+      <Type>Real</Type>
+    </PropertyDefn>
+  </GMLFeatureClass>
+</GMLFeatureClassList>

python/plugins/processing/tests/testdata/expected/convex_hull.gml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ogr:FeatureCollection
+     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+     xsi:schemaLocation=""
+     xmlns:ogr="http://ogr.maptools.org/"
+     xmlns:gml="http://www.opengis.net/gml">
+  <gml:boundedBy>
+    <gml:Box>
+      <gml:coord><gml:X>0</gml:X><gml:Y>-5</gml:Y></gml:coord>
+      <gml:coord><gml:X>8</gml:X><gml:Y>3</gml:Y></gml:coord>
+    </gml:Box>
+  </gml:boundedBy>
+                                                                                                                                                               
+  <gml:featureMember>
+    <ogr:convex_hull fid="convex_hull.0">
+      <ogr:geometryProperty><gml:Polygon srsName="EPSG:4326"><gml:outerBoundaryIs><gml:LinearRing><gml:coordinates>0,-5 0,-1 1,1 3,3 5,2 8,-1 0,-5</gml:coordinates></gml:LinearRing></gml:outerBoundaryIs></gml:Polygon></ogr:geometryProperty>
+      <ogr:id>0</ogr:id>
+      <ogr:value>all</ogr:value>
+      <ogr:area>34.500000</ogr:area>
+      <ogr:perim>24.487476</ogr:perim>
+    </ogr:convex_hull>
+  </gml:featureMember>
+</ogr:FeatureCollection>

python/plugins/processing/tests/testdata/expected/convex_hull_fields.gfs

@@ -0,0 +1,35 @@
+<GMLFeatureClassList>
+  <GMLFeatureClass>
+    <Name>convex_hull_fields</Name>
+    <ElementPath>convex_hull_fields</ElementPath>
+    <GeometryType>3</GeometryType>
+    <SRSName>EPSG:4326</SRSName>
+    <DatasetSpecificInfo>
+      <FeatureCount>3</FeatureCount>
+      <ExtentXMin>0.00000</ExtentXMin>
+      <ExtentXMax>8.00000</ExtentXMax>
+      <ExtentYMin>-5.00000</ExtentYMin>
+      <ExtentYMax>3.00000</ExtentYMax>
+    </DatasetSpecificInfo>
+    <PropertyDefn>
+      <Name>id</Name>
+      <ElementPath>id</ElementPath>
+      <Type>Integer</Type>
+    </PropertyDefn>
+    <PropertyDefn>
+      <Name>value</Name>
+      <ElementPath>value</ElementPath>
+      <Type>Integer</Type>
+    </PropertyDefn>
+    <PropertyDefn>
+      <Name>area</Name>
+      <ElementPath>area</ElementPath>
+      <Type>Real</Type>
+    </PropertyDefn>
+    <PropertyDefn>
+      <Name>perim</Name>
+      <ElementPath>perim</ElementPath>
+      <Type>Real</Type>
+    </PropertyDefn>
+  </GMLFeatureClass>
+</GMLFeatureClassList>

python/plugins/processing/tests/testdata/expected/convex_hull_fields.gml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ogr:FeatureCollection
+     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+     xsi:schemaLocation=""
+     xmlns:ogr="http://ogr.maptools.org/"
+     xmlns:gml="http://www.opengis.net/gml">
+  <gml:boundedBy>
+    <gml:Box>
+      <gml:coord><gml:X>0</gml:X><gml:Y>-5</gml:Y></gml:coord>
+      <gml:coord><gml:X>8</gml:X><gml:Y>3</gml:Y></gml:coord>
+    </gml:Box>
+  </gml:boundedBy>
+                                                                                                                                                               
+  <gml:featureMember>
+    <ogr:convex_hull_fields fid="convex_hull_fields.0">
+      <ogr:geometryProperty><gml:Polygon srsName="EPSG:4326"><gml:outerBoundaryIs><gml:LinearRing><gml:coordinates>0,-5 0,-1 7,-1 0,-5</gml:coordinates></gml:LinearRing></gml:outerBoundaryIs></gml:Polygon></ogr:geometryProperty>
+      <ogr:id>0</ogr:id>
+      <ogr:value>1</ogr:value>
+      <ogr:area>14.000000</ogr:area>
+      <ogr:perim>19.062258</ogr:perim>
+    </ogr:convex_hull_fields>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:convex_hull_fields fid="convex_hull_fields.1">
+      <ogr:geometryProperty><gml:Polygon srsName="EPSG:4326"><gml:outerBoundaryIs><gml:LinearRing><gml:coordinates>8,-1 1,1 4,1 8,-1</gml:coordinates></gml:LinearRing></gml:outerBoundaryIs></gml:Polygon></ogr:geometryProperty>
+      <ogr:id>1</ogr:id>
+      <ogr:value>2</ogr:value>
+      <ogr:area>3.000000</ogr:area>
+      <ogr:perim>14.752246</ogr:perim>
+    </ogr:convex_hull_fields>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:convex_hull_fields fid="convex_hull_fields.2">
+      <ogr:geometryProperty><gml:Polygon srsName="EPSG:4326"><gml:outerBoundaryIs><gml:LinearRing><gml:coordinates>2,2 3,3 5,2 2,2</gml:coordinates></gml:LinearRing></gml:outerBoundaryIs></gml:Polygon></ogr:geometryProperty>
+      <ogr:id>2</ogr:id>
+      <ogr:value>3</ogr:value>
+      <ogr:area>1.500000</ogr:area>
+      <ogr:perim>6.650282</ogr:perim>
+    </ogr:convex_hull_fields>
+  </gml:featureMember>
+</ogr:FeatureCollection>

python/plugins/processing/tests/testdata/expected/count_unique_points.geojson

@@ -0,0 +1,13 @@
+{
+"type": "FeatureCollection",
+"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
+                                                                                
+"features": [
+{ "type": "Feature", "properties": { "fid": "polys.0", "name": "aaaaa", "intval": 33, "floatval": 44.123456, "COUNT": 41 }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -1.0, -1.0 ], [ -1.0, 3.0 ], [ 3.0, 3.0 ], [ 3.0, 2.0 ], [ 2.0, 2.0 ], [ 2.0, -1.0 ], [ -1.0, -1.0 ] ] ] } },
+{ "type": "Feature", "properties": { "fid": "polys.1", "name": "Aaaaa", "intval": -33, "floatval": 0.000000, "COUNT": 3 }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 5.0, 5.0 ], [ 6.0, 4.0 ], [ 4.0, 4.0 ], [ 5.0, 5.0 ] ] ] } },
+{ "type": "Feature", "properties": { "fid": "polys.2", "name": "bbaaa", "intval": null, "floatval": 0.123000, "COUNT": 5 }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 2.0, 5.0 ], [ 2.0, 6.0 ], [ 3.0, 6.0 ], [ 3.0, 5.0 ], [ 2.0, 5.0 ] ] ] } },
+{ "type": "Feature", "properties": { "fid": "polys.3", "name": "ASDF", "intval": 0, "floatval": null, "COUNT": 24 }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 6.0, 1.0 ], [ 10.0, 1.0 ], [ 10.0, -3.0 ], [ 6.0, -3.0 ], [ 6.0, 1.0 ] ], [ [ 7.0, 0.0 ], [ 7.0, -2.0 ], [ 9.0, -2.0 ], [ 9.0, 0.0 ], [ 7.0, 0.0 ] ] ] } },
+{ "type": "Feature", "properties": { "fid": "polys.4", "name": null, "intval": 120, "floatval": -100291.432130, "COUNT": 0 }, "geometry": { "type": "Polygon", "coordinates": [ ] } },
+{ "type": "Feature", "properties": { "fid": "polys.5", "name": "elim", "intval": 2, "floatval": 3.330000, "COUNT": 35 }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 3.0, 2.0 ], [ 6.0, 1.0 ], [ 6.0, -3.0 ], [ 2.0, -1.0 ], [ 2.0, 2.0 ], [ 3.0, 2.0 ] ] ] } }
+]
+}

python/plugins/processing/tests/testdata/qgis_algorithm_tests.yaml

@@ -2015,6 +2015,32 @@ tests:
         name: expected/join_attribute_table.gml
         type: vector
 
+  - algorithm: qgis:convexhull
+    name: Simple convex hull
+    params:
+      INPUT:
+        name: custom/points_hull.gml
+        type: vector
+      METHOD: '0'
+    results:
+      OUTPUT:
+        name: expected/convex_hull.gml
+        type: vector
+
+  - algorithm: qgis:convexhull
+    name: Convex hull based on field attribute
+    params:
+      FIELD: hull
+      INPUT:
+        name: custom/points_hull.gml
+        type: vector
+      METHOD: '1'
+    results:
+      OUTPUT:
+        name: expected/convex_hull_fields.gml
+        type: vector
+
+
   # These tests dissabled because algs require access to iface which
   # is not available in the test suite.
   #- algorithm: qgis:shortestpathpointtopoint