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database_tests.rkt
645 lines (571 loc) · 18.6 KB
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database_tests.rkt
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#| Assignment 1 - Racket Query Language Tests (due February 11, noon)
***Write the names and CDF accounts for each of your group members below.***
Haris Shoaib, g3shoaib
Jasmin Lantos, g4lantos
|#
; Note the use of plai here; this is required for "test"
#lang plai
(abridged-test-output #t)
; This imports your file; do not change this line!
(require "database.rkt")
; Test helpers - use these instead of the built-in syntactic forms.
; DON'T export them from database.rkt!
(define (And x y) (and x y))
(define (Or x y) (or x y))
(define (If x y z) (if x y z))
; Sample tables - add more tables!
; Ideas: empty table; table with just 1 attribute; 0 attributes; duplicates
(define Person
'(("Name" "Age" "LikesChocolate")
("David" 20 #t)
("Jen" 30 #t)
("Paul" 100 #f)))
(define Teaching
'(("Name" "Course")
("David" "CSC324")
("Paul" "CSC108")
("David" "CSC343")
))
(define Person-NoTuple
'(("Name" "Age" "LikesChocolate")))
#|
All tests go below.
We have divided our tests into five sections:
- No WHERE/ORDER BY
- WHERE clause, but no ORDER BY
- ORDER BY clause, but no WHERE
- Both WHERE and ORDER BY
- Nested queries
Please respect this categorization when you add your tests,
and your TAs will appreciate it!
|#
; ---- SELECT/FROM tests ----
; Select none (1)
(test (SELECT '() FROM Person)
'(()
()
()
()))
; Select from empty table (2)
(test (SELECT '("Age") FROM '(()()))
'(()()))
; Select from table with empty tuples (3)
(test (SELECT '("Age") FROM Person-NoTuple)
'(("Age")))
; Select one attribute (4)
(test (SELECT '("Name") FROM Person)
'(("Name")
("David")
("Jen")
("Paul")))
; Select all
(test (SELECT * FROM Person)
'(("Name" "Age" "LikesChocolate")
("David" 20 #t)
("Jen" 30 #t)
("Paul" 100 #f)))
; Reordering columns
(test (SELECT '("Age" "LikesChocolate" "Name") FROM Person)
'(("Age" "LikesChocolate" "Name")
(20 #t "David")
(30 #t "Jen")
(100 #f "Paul")))
; Select creates duplicates
(test (SELECT '("Name") FROM Teaching)
'(("Name")
("David")
("Paul")
("David")))
; Select given a literal table
(test
(SELECT '("A" "B")
FROM '(("C" "A" "B" "D")
(1 "Hi" 5 #t)
(2 "Bye" 5 #f)
(3 "Hi" 10 #t)))
'(("A" "B")
("Hi" 5)
("Bye" 5)
("Hi" 10)))
; Select duplicates from two tables (6)
(test (SELECT '("T.Name") FROM [Person "P"] [Teaching "T"])
'(("T.Name")
("David")
("Paul")
("David")
("David")
("Paul")
("David")
("David")
("Paul")
("David")))
; Select all from a table with no tuples and another table (7)
(test (SELECT * FROM [Person-NoTuple "N"] [Teaching "T"] )
'(("N.Name" "Age" "LikesChocolate" "T.Name" "Course")))
; Select all from two product of two tables
(test (SELECT * FROM [Person "P"] [Teaching "T"])
'(("P.Name" "Age" "LikesChocolate" "T.Name" "Course")
("David" 20 #t "David" "CSC324")
("David" 20 #t "Paul" "CSC108")
("David" 20 #t "David" "CSC343")
("Jen" 30 #t "David" "CSC324")
("Jen" 30 #t "Paul" "CSC108")
("Jen" 30 #T "David" "CSC343")
("Paul" 100 #f "David" "CSC324")
("Paul" 100 #f "Paul" "CSC108")
("Paul" 100 #f "David" "CSC343")))
; Select some from two tables
(test (SELECT '("P.Name" "Course" "Age") FROM [Person "P"] [Teaching "T"])
'(("P.Name" "Course" "Age")
("David" "CSC324" 20)
("David" "CSC108" 20)
("David" "CSC343" 20)
("Jen" "CSC324" 30)
("Jen" "CSC108" 30)
("Jen" "CSC343" 30)
("Paul" "CSC324" 100)
("Paul" "CSC108" 100)
("Paul" "CSC343" 100)))
; Take the product of a table with itself
(test (SELECT '("E.Course" "E1.Course") FROM [Teaching "E1"] [Teaching "E"])
'(("E.Course" "E1.Course")
("CSC324" "CSC324")
("CSC108" "CSC324")
("CSC343" "CSC324")
("CSC324" "CSC108")
("CSC108" "CSC108")
("CSC343" "CSC108")
("CSC324" "CSC343")
("CSC108" "CSC343")
("CSC343" "CSC343")))
; Take the product of a literal table with an identifier
(test
(SELECT *
FROM ['(("Age" "A" "Name" "D")
(1 "Hi" 5 #t)
(2 "Bye" 5 #f)
(3 "Hi" 10 #t))
"T1"]
[Person "T2"])
'(("T1.Age" "A" "T1.Name" "D" "T2.Name" "T2.Age" "LikesChocolate")
(1 "Hi" 5 #t "David" 20 #t)
(1 "Hi" 5 #t "Jen" 30 #t)
(1 "Hi" 5 #t "Paul" 100 #f)
(2 "Bye" 5 #f "David" 20 #t)
(2 "Bye" 5 #f "Jen" 30 #t)
(2 "Bye" 5 #f "Paul" 100 #f)
(3 "Hi" 10 #t "David" 20 #t)
(3 "Hi" 10 #t "Jen" 30 #t)
(3 "Hi" 10 #t "Paul" 100 #f)))
; ---- WHERE ----
; Attribute as condition, select all
(test (SELECT *
FROM Person
WHERE "LikesChocolate")
'(("Name" "Age" "LikesChocolate")
("David" 20 #t)
("Jen" 30 #t)))
; Attribute as condition, select subset
(test (SELECT '("LikesChocolate" "Name")
FROM Person
WHERE "LikesChocolate")
'(("LikesChocolate" "Name")
(#t "David")
(#t "Jen")))
; Attribute as a condition, without selecting conditional attribute (1)
(test (SELECT '("Name")
FROM Person
WHERE "LikesChocolate")
'(("Name")
("David")
("Jen")))
; False boolean value of Attribute as a condition (2)
(test (SELECT '("LikesChocolate" "Name")
FROM Person
WHERE (equal? #f "LikesChocolate"))
'(("LikesChocolate" "Name")
(#f "Paul")))
; Condition as function of one attribute, select all
(test (SELECT *
FROM Person
WHERE (< 50 "Age"))
'(("Name" "Age" "LikesChocolate")
("Paul" 100 #f)))
; Condition as function of one attribute but at different order, select all (3)
(test (SELECT *
FROM Person
WHERE (> "Age" 50))
'(("Name" "Age" "LikesChocolate")
("Paul" 100 #f)))
; Condition as function of one attribute, select none
(test (SELECT '()
FROM Teaching
WHERE (equal? "Name" "David"))
'(()
()
()))
; Condition as a function of two attributes, select all (4)
(test (SELECT *
FROM Person
WHERE (> "Age" (string-length "Name")))
Person)
; Constant true condition
(test (SELECT *
FROM Person
WHERE #t)
Person)
; Constant false compound condition
(test (SELECT *
FROM Person
WHERE (> (string-length "David") 20))
'(("Name" "Age" "LikesChocolate")))
; Condition on a literal table
(test (SELECT '("C" "B")
FROM '(("A" "B" "C")
(1 2 3)
(3 10 40)
(4 4 4)
(2 3 -1))
WHERE (odd? "A"))
'(("C" "B")
(3 2)
(40 10)))
; Compound condition on single table (5)
(test (SELECT *
FROM Person
WHERE (Or (equal? "Name" "David") (And (> "Age" 1) (If "LikesChocolate" #f #t))))
'(("Name" "Age" "LikesChocolate")
("David" 20 #t)
("Paul" 100 #f)))
; Simple condition on joined tables
(test (SELECT *
FROM [Person "P"] [Teaching "T"]
WHERE (equal? "P.Name" "T.Name"))
'(("P.Name" "Age" "LikesChocolate" "T.Name" "Course")
("David" 20 #t "David" "CSC324")
("David" 20 #t "David" "CSC343")
("Paul" 100 #f "Paul" "CSC108")))
; Compound condition on three joined tables
(test (SELECT '("P1.Name" "P1.LikesChocolate" "P.Age" "Course")
FROM [Person "P"] [Teaching "T"] [Person "P1"]
WHERE (And "P.LikesChocolate" (equal? "P1.Name" "T.Name")))
'(("P1.Name" "P1.LikesChocolate" "P.Age" "Course")
("David" #t 20 "CSC324")
("Paul" #f 20 "CSC108")
("David" #t 20 "CSC343")
("David" #t 30 "CSC324")
("Paul" #f 30 "CSC108")
("David" #t 30 "CSC343")))
; Compound condition as a function of one shared attribute on two joined tables, attribute not selected (6)
(test (SELECT '("Age" "LikesChocolate")
FROM [Person "P"] [Teaching "T"]
WHERE (equal? "P.Name" "T.Name"))
'(("Age" "LikesChocolate")
(20 #t)
(20 #t)
(100 #f))
)
; ---- ORDER BY ----
; Order by attribute
(test (SELECT *
FROM Person
ORDER BY "Age")
'(("Name" "Age" "LikesChocolate")
("Paul" 100 #f)
("Jen" 30 #t)
("David" 20 #t)))
; Order by attribute, not selected
(test (SELECT '("Name")
FROM Person
ORDER BY "Age")
'(("Name")
("Paul")
("Jen")
("David")))
; Order by a function of an attribute
(test (SELECT *
FROM Person
ORDER BY (string-length "Name"))
'(("Name" "Age" "LikesChocolate")
("David" 20 #t)
("Paul" 100 #f)
("Jen" 30 #t)))
; Order with duplicate
(test (SELECT *
FROM Teaching
ORDER BY (+ (string-length "Name") (string-length "Course")))
'(("Name" "Course")
("David" "CSC324")
("David" "CSC343")
("Paul" "CSC108")))
; Order on a literal table
(test (SELECT *
FROM '(("A" "B" "C")
(1 2 3)
(3 10 40)
(4 4 4)
(2 3 -1))
ORDER BY "C")
'(("A" "B" "C")
(3 10 40)
(4 4 4)
(1 2 3)
(2 3 -1)))
; Order on two tables
(test (SELECT *
FROM [Person "P"] [Teaching "T"]
ORDER BY "Age")
'(("P.Name" "Age" "LikesChocolate" "T.Name" "Course")
("Paul" 100 #f "David" "CSC324")
("Paul" 100 #f "Paul" "CSC108")
("Paul" 100 #f "David" "CSC343")
("Jen" 30 #t "David" "CSC324")
("Jen" 30 #t "Paul" "CSC108")
("Jen" 30 #t "David" "CSC343")
("David" 20 #t "David" "CSC324")
("David" 20 #t "Paul" "CSC108")
("David" 20 #t "David" "CSC343")))
; Order by compound expression on literal table (1)
(test (SELECT *
FROM '(("Height" "Name" "Age") (6 "Jasmin" 18) (5 "Jennifer" 20) (5 "Haris" 20) (50 "David" 1))
ORDER BY (+ (string-length "Name") "Height"))
'(("Height" "Name" "Age")
(50 "David" 1)
(5 "Jennifer" 20)
(6 "Jasmin" 18)
(5 "Haris" 20)))
; Order by function of an attribute on the product of a table with itself (2)
(test (SELECT *
FROM [Teaching "T"] [Teaching "S"]
ORDER BY (- (string-length "Name") (string-length "Course")))
'(("T.Name" "T.Course" "S.Name" "S.Course")
("David" "CSC324" "David" "CSC324")
("David" "CSC324" "Paul" "CSC108")
("David" "CSC324" "David" "CSC343")
("Paul" "CSC108" "David" "CSC324")
("Paul" "CSC108" "Paul" "CSC108")
("Paul" "CSC108" "David" "CSC343")
("David" "CSC343" "David" "CSC324")
("David" "CSC343" "Paul" "CSC108")
("David" "CSC343" "David" "CSC343")))
; Order by function of two attributes on three tables (3)
(test (SELECT *
FROM [Teaching "T"] [Teaching "S"] [Person "P"]
ORDER BY (/ (string-length "Name") "Age"))
'(("T.Name" "T.Course" "S.Name" "S.Course" "P.Name" "Age" "LikesChocolate")
("David" "CSC324" "David" "CSC324" "David" 20 #t)
("David" "CSC324" "Paul" "CSC108" "David" 20 #t)
("David" "CSC324" "David" "CSC343" "David" 20 #t)
("Paul" "CSC108" "David" "CSC324" "David" 20 #t)
("Paul" "CSC108" "Paul" "CSC108" "David" 20 #t)
("Paul" "CSC108" "David" "CSC343" "David" 20 #t)
("David" "CSC343" "David" "CSC324" "David" 20 #t)
("David" "CSC343" "Paul" "CSC108" "David" 20 #t)
("David" "CSC343" "David" "CSC343" "David" 20 #t)
("David" "CSC324" "David" "CSC324" "Jen" 30 #t)
("David" "CSC324" "Paul" "CSC108" "Jen" 30 #t)
("David" "CSC324" "David" "CSC343" "Jen" 30 #t)
("Paul" "CSC108" "David" "CSC324" "Jen" 30 #t)
("Paul" "CSC108" "Paul" "CSC108" "Jen" 30 #t)
("Paul" "CSC108" "David" "CSC343" "Jen" 30 #t)
("David" "CSC343" "David" "CSC324" "Jen" 30 #t)
("David" "CSC343" "Paul" "CSC108" "Jen" 30 #t)
("David" "CSC343" "David" "CSC343" "Jen" 30 #t)
("David" "CSC324" "David" "CSC324" "Paul" 100 #f)
("David" "CSC324" "Paul" "CSC108" "Paul" 100 #f)
("David" "CSC324" "David" "CSC343" "Paul" 100 #f)
("Paul" "CSC108" "David" "CSC324" "Paul" 100 #f)
("Paul" "CSC108" "Paul" "CSC108" "Paul" 100 #f)
("Paul" "CSC108" "David" "CSC343" "Paul" 100 #f)
("David" "CSC343" "David" "CSC324" "Paul" 100 #f)
("David" "CSC343" "Paul" "CSC108" "Paul" 100 #f)
("David" "CSC343" "David" "CSC343" "Paul" 100 #f)))
; Order by constant number (4)
(test (SELECT *
FROM Person ORDER BY 1)
'(("Name" "Age" "LikesChocolate")
("David" 20 #t)
("Jen" 30 #t)
("Paul" 100 #f)))
; Order by on an attribute on a table with no tuples (5)
(test (SELECT *
FROM Person-NoTuple
ORDER BY "Age")
'(("Name" "Age" "LikesChocolate")))
; Order by on an attribute on an empty table (6)
(test (SELECT *
FROM '(())
ORDER BY "Age")
'(()))
; ---- ORDER BY and WHERE ----
; Use attributes, select all
(test
(SELECT *
FROM Person
WHERE "LikesChocolate"
ORDER BY "Age")
'(("Name" "Age" "LikesChocolate")
("Jen" 30 #t)
("David" 20 #t)))
; Use attributes, select one unused attribute
(test
(SELECT '("Name")
FROM Person
WHERE "LikesChocolate"
ORDER BY "Age")
'(("Name")
("Jen")
("David")))
; Use empty table (1)
(test (SELECT *
FROM '(())
WHERE '("LikesChocolate")
ORDER BY "Age")
'(()))
; Use a table with no tuples (2)
(test (SELECT *
FROM Person-NoTuple
WHERE '("LikesChocolate")
ORDER BY "Age")
'(("Name" "Age" "LikesChocolate")))
; Use predicate that evaluates to false for every tuple (3)
(test (SELECT *
FROM Person
WHERE (< "Age" 20)
ORDER BY "Age")
'(("Name" "Age" "LikesChocolate")))
; Two joined tables, select all
(test
(SELECT *
FROM [Person "P"] [Teaching "T"]
WHERE (equal? "P.Name" "T.Name")
ORDER BY "Age")
'(("P.Name" "Age" "LikesChocolate" "T.Name" "Course")
("Paul" 100 #f "Paul" "CSC108")
("David" 20 #t "David" "CSC324")
("David" 20 #t "David" "CSC343")))
; Two joined tables, select some attributes
(test
(SELECT '("P.Name" "Course" "LikesChocolate")
FROM [Person "P"] [Teaching "T"]
WHERE (equal? "P.Name" "T.Name")
ORDER BY "Age")
'(("P.Name" "Course" "LikesChocolate")
("Paul" "CSC108" #f)
("David" "CSC324" #t)
("David" "CSC343" #t)))
; Three joined tables, select all (4)
(test (SELECT *
FROM [Teaching "T"] [Teaching "S"] [Person "P"]
WHERE (And (equal? "T.Name" "David") (equal? "T.Course" "CSC324")))
'(("T.Name" "T.Course" "S.Name" "S.Course" "P.Name" "Age" "LikesChocolate")
("David" "CSC324" "David" "CSC324" "David" 20 #t)
("David" "CSC324" "David" "CSC324" "Jen" 30 #t)
("David" "CSC324" "David" "CSC324" "Paul" 100 #f)
("David" "CSC324" "Paul" "CSC108" "David" 20 #t)
("David" "CSC324" "Paul" "CSC108" "Jen" 30 #t)
("David" "CSC324" "Paul" "CSC108" "Paul" 100 #f)
("David" "CSC324" "David" "CSC343" "David" 20 #t)
("David" "CSC324" "David" "CSC343" "Jen" 30 #t)
("David" "CSC324" "David" "CSC343" "Paul" 100 #f)))
; Two joined tables, use order by on attribute with same value for all tuples in resulting table of where (5)
(test (SELECT *
FROM [Person "P"] [Teaching "T"]
WHERE (And (equal? "P.Name" "David") (equal? "T.Name" "David"))
ORDER BY "Age")
'(("P.Name" "Age" "LikesChocolate" "T.Name" "Course")
("David" 20 #t "David" "CSC324")
("David" 20 #t "David" "CSC343")))
; ---- Nested queries ----
; Select all from resulting empty table (1)
(test (SELECT *
FROM (SELECT * FROM Person WHERE (> "Age" 100)))
'(("Name" "Age" "LikesChocolate")))
; Select attributes from resulting product of two tables (2)
(test (SELECT '("P.Name" "T.Name")
FROM (SELECT * FROM [Person "P"] [Teaching "T"]))
'(("P.Name" "T.Name")
("David" "David")
("David" "Paul")
("David" "David")
("Jen" "David")
("Jen" "Paul")
("Jen" "David")
("Paul" "David")
("Paul" "Paul")
("Paul" "David")))
; Select attributes in different order from attributes of resulting table (3)
(test (SELECT '("LikesChocolate" "Age")
FROM (SELECT * FROM [Person "P"] [Teaching "T"]))
'(("LikesChocolate" "Age")
(#t 20)
(#t 20)
(#t 20)
(#t 30)
(#t 30)
(#t 30)
(#f 100)
(#f 100)
(#f 100)))
;Nested Where Condition (4)
(test (SELECT *
FROM [Person "P"] [Teaching "T"]
WHERE (And (equal? "P.Name" "T.Name") (if (equal? "P.Name" "David") #f #t))
ORDER BY "Age")
'(("P.Name" "Age" "LikesChocolate" "T.Name" "Course")
("Paul" 100 #f "Paul" "CSC108")))
; Nested Order by Expression (5)
(test (SELECT *
FROM [Person "P"] [Teaching "T"]
WHERE '("LikesChocolate")
ORDER BY (+ (+ (string-length "P.Name") (string-length "T.Name")) "Age"))
'(("P.Name" "Age" "LikesChocolate" "T.Name" "Course")
("Paul" 100 #f "David" "CSC324")
("Paul" 100 #f "David" "CSC343")
("Paul" 100 #f "Paul" "CSC108")
("Jen" 30 #t "David" "CSC324")
("Jen" 30 #t "David" "CSC343")
("Jen" 30 #t "Paul" "CSC108")
("David" 20 #t "David" "CSC324")
("David" 20 #t "David" "CSC343")
("David" 20 #t "Paul" "CSC108")))
(test
(SELECT *
FROM (SELECT '("Age" "Name") FROM Person))
'(("Age" "Name")
(20 "David")
(30 "Jen")
(100 "Paul")))
(test
(SELECT '("Person.Name" "Course")
FROM [(SELECT '("Name") FROM Person) "Person"]
[(SELECT * FROM Teaching WHERE (Or (equal? "Course" "CSC343")
(equal? "Course" "CSC108")))
"Teaching"])
'(("Person.Name" "Course")
("David" "CSC108")
("David" "CSC343")
("Jen" "CSC108")
("Jen" "CSC343")
("Paul" "CSC108")
("Paul" "CSC343")))
; Nested query containing a literal
(test
(SELECT *
FROM [(SELECT '("A")
FROM '(("A" "B")
(1)
(10)))
"Table1"]
[(SELECT *
FROM '(("C" "A")
("Hi" "Bye")
("Dog" "Cat")
("Red" "Blue")))
"Table2"]
WHERE (And (equal? (string-length "Table2.A") 3) (< 0 "Table1.A")))
'(("Table1.A" "C" "Table2.A")
(1 "Hi" "Bye")
(1 "Dog" "Cat")
(10 "Hi" "Bye")
(10 "Dog" "Cat")))