Syntax highlighting for processing tests readme

python/plugins/processing/tests/README.md

@@ -7,7 +7,8 @@ This file is structured with [yaml syntax](http://www.yaml.org/start.html).
 
 A basic test appears under the toplevel key `tests` and looks like this:
 
-    - name: centroid
+```yaml
+- name: centroid
   algorithm: qgis:polygoncentroids
   params:
     - type: vector
@@ -16,6 +17,7 @@ A basic test appears under the toplevel key `tests` and looks like this:
     OUTPUT_LAYER:
       type: vector
       name: expected/polys_centroid.gml
+```
 
 How To
 ------
@@ -39,7 +41,8 @@ ones to params and the last one(s) to results.
 
 The above translates to
 
-    - name: densify
+```yaml
+- name: densify
   algorithm: qgis:densifygeometriesgivenaninterval
   params:
     - type: vector
@@ -49,6 +52,7 @@ The above translates to
     OUTPUT:
       type: vector
       name: expected/polys_densify.gml
+```
 
 Params and results
 ------------------
@@ -57,17 +61,21 @@ Params and results
 
 Params and results are specified as lists or dictionaries:
 
-    params:
+```yaml
+params:
   INTERVAL: 5
   INTERPOLATE: True
   NAME: A processing test
+```
 
 or
 
-    params:
+```yaml
+params:
   - 2
   - string
   - another param
+```
 
 ### Layer type parameters
 
@@ -80,13 +88,15 @@ You will often need to specify layers as parameters. To specify a layer you will
 
 This is what it looks like in action:
 
-    params:
+```yaml
+params:
   PAR: 2
   STR: string
   LAYER:
     type: vector
     name: polys.gml
   OTHER: another param
+```
 
 ### Results
 
@@ -96,9 +106,11 @@ Results are specified very similar.
 
 It couldn't be more trivial
 
+```yaml
     OUTPUT:
       name: expected/qgis_intersection.gml
       type: vector
+```
 
 #### Vector with tolerance
 
@@ -114,7 +126,8 @@ field name `__all__` which will apply a certain tolerance to all fields.
 There is another property `geometry`  which also accepts a `precision` which is
 applied to each vertex.
 
-    OUTPUT:
+```yaml
+OUTPUT:
   type: vector
   name: expected/abcd.gml
   compare:
@@ -124,31 +137,38 @@ applied to each vertex.
       A: skip # skip field A
     geometry:
       precision: 5 # compare coordinates with a precision of 5 digits
+```
 
 #### Raster files
 
 Raster files are compared with a hash checksum. This is calculated when you create
 a test from the processing history.
 
-    OUTPUT:
+```yaml
+OUTPUT:
   type: rasterhash
   hash: f1fedeb6782f9389cf43590d4c85ada9155ab61fef6dc285aaeb54d6
+```
       
 #### Files
 
 You can compare the content of an ouptut file by an expected result reference file
 
-    OUTPUT_HTML_FILE:
+```yaml
+OUTPUT_HTML_FILE:
   name: expected/basic_statistics_string.html
   type: file
+```
 
 Or you can use one or more regular expressions that will be [matched](https://docs.python.org/2/library/re.html#re.search) against the file
 content
 
-    OUTPUT:
+```yaml
+OUTPUT:
   name: layer_info.html
   type: regex
   rules:
     - 'Extent: \(-1.000000, -3.000000\) - \(11.000000, 5.000000\)'
     - 'Geometry: Line String'
     - 'Feature Count: 6'
+```