added sample test script which calls two algorithms

Author: alexbruy

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

@@ -0,0 +1,26 @@
+<GMLFeatureClassList>
+  <GMLFeatureClass>
+    <Name>selected_points</Name>
+    <ElementPath>selected_points</ElementPath>
+    <!--POINT-->
+    <GeometryType>1</GeometryType>
+    <SRSName>EPSG:4326</SRSName>
+    <DatasetSpecificInfo>
+      <FeatureCount>2</FeatureCount>
+      <ExtentXMin>1.00000</ExtentXMin>
+      <ExtentXMax>5.00000</ExtentXMax>
+      <ExtentYMin>1.00000</ExtentYMin>
+      <ExtentYMax>2.00000</ExtentYMax>
+    </DatasetSpecificInfo>
+    <PropertyDefn>
+      <Name>id</Name>
+      <ElementPath>id</ElementPath>
+      <Type>Integer</Type>
+    </PropertyDefn>
+    <PropertyDefn>
+      <Name>id2</Name>
+      <ElementPath>id2</ElementPath>
+      <Type>Integer</Type>
+    </PropertyDefn>
+  </GMLFeatureClass>
+</GMLFeatureClassList>

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

@@ -0,0 +1,28 @@
+<?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>1</gml:X><gml:Y>1</gml:Y></gml:coord>
+      <gml:coord><gml:X>5</gml:X><gml:Y>2</gml:Y></gml:coord>
+    </gml:Box>
+  </gml:boundedBy>
+                                                                                                                                                                
+  <gml:featureMember>
+    <ogr:selected_points 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:selected_points>
+  </gml:featureMember>
+  <gml:featureMember>
+    <ogr:selected_points 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:selected_points>
+  </gml:featureMember>
+</ogr:FeatureCollection>

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

@@ -14,3 +14,14 @@ tests:
         compare:
           geometry:
             precision: 7
+
+  - algorithm: script:selectbyattribute
+    name: Select by attribute
+    params:
+      INPUT_LAYER:
+        name: points.gml
+        type: vector
+    results:
+      OUTPUT_LAYER:
+        name: expected/selected_points.gml
+        type: vector

python/plugins/processing/tests/testdata/scripts/selectbyattribute.py

@@ -0,0 +1,16 @@
+##Select by attribute=name
+##Tests=group
+##INPUT_LAYER=vector
+##OUTPUT_LAYER=output vector
+
+import processing
+
+result = processing.runalg("qgis:selectbyattribute",
+                           INPUT_LAYER,
+                           "id2",
+                           0,
+                           "2")
+
+processing.runalg("qgis:saveselectedfeatures",
+                  result["OUTPUT"],
+                  OUTPUT_LAYER)