~~NOCACHE~~
====== Tests: Loki SPARQL Queries ======

<WRAP center round info 60%>
  * Tests are performed manually - you have to compare if sections "Expected result" and "Actual result" represent the same thing!
  * Tests can be run inside wiki (as below) or against **[[http://loki.ia.agh.edu.pl/wiki/sparql/|Loki SPARQL Endpoint]]**.
</WRAP>

===== SELECT query =====

**Description:** SELECT query with FILTER() and ORDER BY

**Code:**

<code loki><pl format="sparql">
PREFIX wiki:   <>
SELECT ?page ?lang ?length
WHERE 
  { 
     ?page a "querytest".
     ?page wiki:test_lang ?lang.
     ?page wiki:test_length ?length.
     FILTER (?lang!='polish')
  }
ORDER BY INC(?length)
LIMIT 5
</pl></code>

**Expected result:**

^ page ^ lang ^ length ^
| tests:loki-queries:page7 | english | 1 |
| tests:loki-queries:page1 | english | 100 |
| tests:loki-queries:page4 | latin | 666 |
| tests:loki-queries:page5 | latin | 1234 |

**Actual result:**

<pl format="sparql">
PREFIX wiki:   <>
SELECT ?page ?lang ?length
WHERE 
  { 
     ?page a "querytest".
     ?page wiki:test_lang ?lang.
     ?page wiki:test_length ?length.
     FILTER (?lang!='polish')
  }
ORDER BY INC(?length)
LIMIT 5
</pl>

===== ASK query =====

**Description:** Simple ASK queries

**Code:**

<code loki>Are there any pages not in polish?
<pl format="sparql">
PREFIX wiki: <>
ASK {
     ?page a "querytest".
     ?page wiki:test_lang ?lang.
     FILTER (?lang!='polish')
}
</pl>

Are there any pages from year 2000? 
<pl format="sparql">
PREFIX wiki: <>
ASK {
     ?page a "querytest".
     ?page wiki:test_year ?year.
     FILTER (?year='2000')
}
</pl></code>

**Expected result:**

<code>Are there any pages not in polish? yes

Are there any pages from year 2000? no</code>

**Actual result:**

Are there any pages not in polish?
<pl format="sparql">
PREFIX wiki: <>
ASK {
     ?page a "querytest".
     ?page wiki:test_lang ?lang.
     FILTER (?lang!='polish')
}
</pl>

Are there any pages from year 2000? 
<pl format="sparql">
PREFIX wiki: <>
ASK {
     ?page a "querytest".
     ?page wiki:test_year ?year.
     FILTER (?year='2000')
}
</pl>

===== DESCRIBE query =====

**Describe:** Describe pages that are linked (as ''test_other_page'') in other pages.

**Code:**

<code loki><pl format="sparql">
PREFIX wiki: <>
DESCRIBE ?other 
WHERE {
  ?page a "querytest" ;
         wiki:test_other_page ?other .
}
</pl></code>

**Expected result:**

| tests:loki-queries:page1 | a | querytest ; |
| | test_autor | Krzysztof Kutt ; |
| | test_lang | english , |
| | | polish ; |
| | test_length	| 100 ; |
| | test_other_page | tests:loki-queries:page2 ; |
| | test_title | Długi tytuł testowy ; |
| | test_year | 2015 . |

| tests:loki-queries:page2 | a | querytest ; |
| | test_autor | Krzysztof Kutt ; |
| | test_length | 140 ; |
| | test_location | internet ; |
| | test_other_page | tests:loki-queries:nonexist-page , |
| | | tests:loki-queries:page1 ; |
| | test_year | 1900 . |

**Actual result:**

<pl format="sparql">
PREFIX wiki: <>
DESCRIBE ?other 
WHERE {
  ?page a "querytest" ;
         wiki:test_other_page ?other .
}
</pl>