Add tests for IdP-only aggregate

InCommon.robot

@@ -1,4 +1,5 @@
 *** Settings ***
+Library  Collections
 Resource  MDQ.robot
 Variables  variables.py
 
@@ -12,3 +13,14 @@ URN-Style Entity ID
   [Documentation]  GET an entity with a URN-style entityID
   ${resp}=    Get Entity    baseUrl=${BASE_URL}  identifier=${INC_ENTITY_ID_URN}
   Should Be Equal As Strings    ${resp.status_code}  200
+
+All IdPs Collection
+  [Documentation]  GET the collection of all IdPs
+  ${resp}=    Get Entity    baseUrl=${BASE_URL}  identifier=${INC_ALL_IDPS}
+  Should Be Equal As Strings    ${resp.status_code}  200
+
+All IdPs Collection (Gzip)
+  [Documentation]  GET the collection of all IdPs with Gzip compression
+    ${resp}=    Get Entity With Gzip    baseUrl=${BASE_URL}  identifier=${INC_ALL_IDPS}
+    Should Be Equal As Strings    ${resp.status_code}  200  msg=MUST support gzip compression
+    Dictionary Should Contain Item    ${resp.headers}  content-encoding  gzip  msg=MUST support gzip compression

variables.py.example

@@ -25,3 +25,6 @@ INC_ENTITY_ID_URL_ENCODED = "https:%2F%2Ffm.incommon.org%2Fsp"
 
 # InCommon URN-style entityID
 INC_ENTITY_ID_URN = "urn:mace:incommon:internet2.edu"
+
+# InCommon collection of all IdPs
+INC_ALL_IDPS = "idps/all"