Add feature pruning test

Author: wlupton

test/test_tree/Makefile

@@ -1,4 +1,6 @@
-test: test1 test2 test3 test4 test5 test6 test7
+PYANG := $(or $(PYANG), pyang)
+
+test: test1 test2 test3 test4 test5 test6 test7 test8 test9 test10
 
 test1:
 	$(PYANG) -f tree x.yang --tree-line-length 10 | diff x.tree.10.expect -
@@ -25,3 +27,9 @@ test7:
 
 test8:
 	$(PYANG) -f tree aug.yang | diff aug.tree.expect -
+
+test9:
+	$(PYANG) -f tree feature.yang | diff feature.tree.expect -
+
+test10:
+	$(PYANG) -f tree -F feature: feature.yang | diff feature-pruned.tree.expect -

test/test_tree/aug.tree.expect

@@ -0,0 +1,10 @@
+module: aug
+
+  augment /parent:parent-container:
+    +--rw test-list* [test-key]
+       +--rw test-key    string
+       +--rw dummy?      uint16
+  augment /parent:parent-container-2:
+    +--rw test-list* [test-key]
+       +--rw test-key    string
+       +--rw dummy?      uint16

test/test_tree/feature-pruned.tree.expect

@@ -0,0 +1,4 @@
+module: feature
+  +--rw root
+
+  augment /if:interfaces/if:interface:

test/test_tree/feature.tree.expect

@@ -0,0 +1,6 @@
+module: feature
+  +--rw root
+     +--rw foo?   string {has-leaf-foo}?
+
+  augment /if:interfaces/if:interface:
+    +--rw foo?   string {has-leaf-foo}?

test/test_tree/feature.yang

@@ -0,0 +1,29 @@
+module feature {
+  yang-version 1.1;
+  namespace "urn:feature";
+  prefix feature;
+
+  import ietf-interfaces {
+    prefix if;
+  }
+
+  feature has-leaf-foo;
+
+  grouping common {
+    leaf foo {
+      if-feature has-leaf-foo;
+      type string;
+    }
+  }
+
+  container root {
+  }
+
+  augment /root {
+    uses common;
+  }
+
+  augment /if:interfaces/if:interface {
+    uses common;
+  }
+}