func_evalexten: Add tests for EVAL_EXTEN function

Adds tests for the new EVAL_EXTEN function to
ensure that it functions correctly.

Additionally, this tests the refactoring of some
code into pbx_parse_location (new public API)
to ensure that parsing is done properly, as this
is required by both EVAL_EXTEN and the PBX core.

pbx_substitute_variables_helper_full_location is
also tested by this test suite.

ASTERISK-29486

Change-Id: Ib12fde79e06c3c02b1303ba09fabb21f75b12f5a

Author: InterLinked1

Diff for: tests/funcs/func_evalexten/configs/ast1/extensions.conf

@@ -0,0 +1,55 @@
+
+[default]
+exten => s,1,Answer()
+	same => n,Set(GLOBAL(evalexten)=isreallycool)
+	same => n,Set(i=0)
+	same => n,While($[${INC(i)}<=11])
+	same => n,Originate(Local/${i}@evalexten,app,Wait,5,,,a)
+	same => n,EndWhile()
+	same => n,Hangup()
+
+[nothing]
+exten => 0,1,Answer()
+	same => n,Wait(10)
+	same => n,Hangup()
+
+[evalexten]
+exten => success,1,UserEvent(EvalExtenSuccess,Result: Pass)
+	same => n,Hangup()
+exten => fail,1,UserEvent(EvalExtenFailure,Result: Fail ${RECEIVESFSTATUS} ${digits},Reason: ${digits})
+	same => n,Hangup()
+exten => 1,1,GotoIf($["${EVAL_EXTEN(ee-context-1,${EPOCH},1)}"="4545"]?success,1:fail,1) ; make sure evaluated extension is argument, not current dialplan extension
+exten => 2,1,GotoIf($["${EVAL_EXTEN(ee-context-2,${EPOCH},1)}"=""]?success,1:fail,1) ; non-existent evaluation extension
+exten => 3,1,GotoIf($[${EVAL_EXTEN(ee-context-3,${EXTEN},1)}>${EPOCH}]?success,1:fail,1) ; ensure variable substitution occurs correctly
+exten => 4,1,GotoIf($[${EVAL_EXTEN(ee-context-4,212,1)}=200]?success,1:fail,1) ; ensure pattern matching works correctly
+exten => 5,1,GotoIf($[${EVAL_EXTEN(ee-context-4,312,1)}=300]?success,1:fail,1) ; ensure pattern matching works correctly
+exten => 6,1,GotoIf($[${EVAL_EXTEN(ee-context-4,332,1)}=330]?success,1:fail,1) ; ensure pattern matching works correctly
+exten => 7,1,GotoIf($["${EVAL_EXTEN(ee-context-4,332,2)}"="isreallycool"]?success,1:fail,1) ; ensure non-1 priorities work correctly
+exten => 8,1,GotoIf($[${EVAL_EXTEN(100,1)}=50]?success,1:fail,1) ; implicit context
+exten => 9,1,GotoIf($[${EVAL_EXTEN(2)}=60]?success,1:fail,1) ; implicit context and extension
+	same => n,Return(60)
+exten => 10,1,GotoIf($["${EVAL_EXTEN(ee-context-5,353,1)}"="353"]?success,1:fail,1) ; EXTEN evaluation
+exten => 11,1,GotoIf($["${EVAL_EXTEN(ee-context-5,354,1)}"="1"]?success,1:fail,1) ; EXTEN evaluation
+exten => 100,1,Return(50)
+
+[ee-context-1]
+exten => 1,1,Return(0)
+exten => _X!,1,Return(4545)
+
+[ee-context-2]
+exten => 0,1,Return(4545)
+
+[ee-context-3]
+exten => 1,1,Return(${EPOCH})
+exten => 2,1,Return($[${EPOCH}+1])
+exten => 3,1,Return($[${EPOCH}+2])
+
+[ee-context-4]
+exten => _2XX,1,Return(200)
+exten => _3XX,1,Return(300)
+exten => _33X,1,Return(330)
+	same => n,Return(${evalexten})
+
+[ee-context-5]
+exten => 353,1,Return(${EXTEN})
+exten => 354,1,Return($["${EXTEN}"="354"])

Diff for: tests/funcs/func_evalexten/test-config.yaml

@@ -0,0 +1,59 @@
+testinfo:
+    summary: 'Ensure that func_evalexten functions correctly.'
+    description: |
+        'This tests the EVAL_EXTEN function to ensure it properly
+        evaluates in different scenarios.'
+
+test-modules:
+    test-object:
+        config-section: test-object-config
+        typename: 'test_case.TestCaseModule'
+    modules:
+        -
+            config-section: caller-originator
+            typename: 'pluggable_modules.Originator'
+        -
+            config-section: hangup-monitor
+            typename: 'pluggable_modules.HangupMonitor'
+        -
+            config-section: ami-config
+            typename: 'pluggable_modules.EventActionModule'
+
+test-object-config:
+    connect-ami: True
+
+caller-originator:
+    channel: 'Local/s@default'
+    context: 'nothing'
+    exten: '0'
+    priority: '1'
+    trigger: 'ami_connect'
+
+hangup-monitor:
+    ids: '0'
+
+ami-config:
+    -
+        ami-events:
+            conditions:
+                match:
+                    Event: 'UserEvent'
+                    UserEvent: 'EvalExtenSuccess'
+            requirements:
+                match:
+                    Result: 'Pass'
+            count: 11
+        stop_test:
+
+properties:
+    tags:
+        - dial
+        - funcs
+    dependencies:
+        - python: 'twisted'
+        - python: 'starpy'
+        - asterisk: 'app_dial'
+        - asterisk: 'app_userevent'
+        - asterisk: 'app_originate'
+        - asterisk: 'func_evalexten'
+        - asterisk: 'pbx_config'

Diff for: tests/funcs/tests.yaml

@@ -7,3 +7,4 @@ tests:
     - test: 'func_push'
     - test: 'func_srv'
     - test: 'func_talkdetect'
+    - test: 'func_evalexten'