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|
(ns clojure-sql.dsl-test
(:refer-clojure :exclude [sort-by])
(:require [clojure-sql.dsl :refer :all]
[midje.sweet :refer :all]))
(fact "Table creates basic queries on tables"
(table ..name..)
=> {:tables {..name.. ..name..}}
;(provided (keyword? ..name..) => true)
(table {..name.. ..alias..})
=> {:tables {..alias.. ..name..}}
(table {..name.. ..alias.., ..name2.. ..alias2..})
=> {:tables {..alias.. ..name..,
..alias2.. ..name2..}})
(fact "Project restricts (and/or adds) fields of a query"
(prerequisites (keyword? ..table-alias..) => true
(keyword? ..table..) => true
(keyword? ..field..) => true
(keyword? ..field-alias..) => true
(keyword? ..field2..) => true
(keyword? ..field2-alias..) => true)
(fact "projecting onto a single field from one table"
(-> (table {..table.. ..table-alias..})
(project [..field..]))
=> {:tables {..table-alias.. ..table..}
:fields {..field.. [..table-alias.. ..field..]}}
(-> (table {..table.. ..table-alias..})
(project {..field.. ..field-alias..}))
=> {:tables {..table-alias.. ..table..}
:fields {..field-alias.. [..table-alias.. ..field..]}})
(fact "projecting onto multiple fields from one table"
(-> (table {..table.. ..table-alias..})
(project [..field.. ..field2..]))
=> {:tables {..table-alias.. ..table..}
:fields {..field.. [..table-alias.. ..field..]
..field2.. [..table-alias.. ..field2..]}}
(-> (table {..table.. ..table-alias..})
(project {..field.. ..field-alias.., ..field2.. ..field2-alias..}))
=> {:tables {..table-alias.. ..table..}
:fields {..field-alias.. [..table-alias.. ..field..]
..field2-alias.. [..table-alias.. ..field2..]}})
(fact "projecting one a field from multiple tables"
(prerequisites ..tables.. =contains=> {:tables {..table.. ..table.., ..table2.. ..table2..}})
(project ..tables.. [..field..])
=> (throws clojure.lang.ExceptionInfo)
(project ..tables.. {..field.. ..field-alias..})
=> (throws clojure.lang.ExceptionInfo))
(fact "projecting a subset of the current projection from one table"
;; Note that these two facts are retaining the ..table.. in the
;; fields rather than using the ..table-alias.. they would have
;; used otherwise. This shows they are filtering the existing
;; fields rather than removing and re-adding the fields.
(project {:tables {..table-alias.. ..table..}
:fields {..field.. [..table.. ..field..]
..field2.. [..table.. ..field2..]}}
[..field..])
=> {:tables {..table-alias.. ..table..}
:fields {..field.. [..table.. ..field..]}}
(project {:tables {..table-alias.. ..table..}
:fields {..field.. [..table.. ..field..]
..field2.. [..table.. ..field2..]}}
{..field.. ..field-alias..})
=> {:tables {..table-alias.. ..table..}
:fields {..field-alias.. [..table.. ..field..]}})
(fact "projecting a disjoint set from the current projection from one table"
(project {:tables {..table-alias.. ..table..}
:fields {[..table.. ..field..] ..field..}}
[..field2..])
=> {:tables {..table-alias.. ..table..}
:fields {..field2.. [..table-alias.. ..field2..]}})
(fact "projecting a superset from the current projection from one table"
(project {:tables {..table.. ..table..}
:fields {..field.. [..table.. ..field..]}}
[..field.. ..field2..])
=> {:tables {..table.. ..table..}
:fields {..field.. [..table.. ..field..]
..field2.. [..table.. ..field2..]}}
;; once again - note the table aliases
(project {:tables {..table-alias.. ..table..}
:fields {..field.. [..table.. ..field..]}}
[..field.. ..field2..])
=> {:tables {..table-alias.. ..table..}
:fields {..field.. [..table.. ..field..]
..field2.. [..table-alias.. ..field2..]}})
(fact "projecting a subset of the current projection from two table"
(prerequisites ..tables.. =contains=> {:tables {..table.. ..table.., ..table2.. ..table2..}})
(project {:tables ..tables..
:fields {..field.. [..table.. ..field..]
..field2.. [..table.. ..field2..]}}
[..field..])
=> {:tables ..tables..
:fields {..field.. [..table.. ..field..]}}
(project {:tables ..tables..
:fields {..field.. [..table.. ..field..]
..field2.. [..table.. ..field2..]}}
{..field.. ..field-alias..})
=> {:tables ..tables..
:fields {..field-alias.. [..table.. ..field..]}})
(fact "projecting a disjoint set from the current projection from two tables"
(project {:tables {..table-alias.. ..table.., ..table2-alias.. ..table2..}
:fields {[..table.. ..field..] ..field..}}
[..field2..])
=> (throws clojure.lang.ExceptionInfo))
(fact "projecting a superset from the current projection from two tables"
(project {:tables {..table-alias.. ..table.., ..table2-alias.. ..table2..}
:fields {[..table.. ..field..] ..field..}}
[..field.. ..field2..])
=> (throws clojure.lang.ExceptionInfo)))
(fact "renaming fields does what you'd expect (renames them, removes the old alias)"
(prerequisites (keyword? ..table..) => true
(keyword? ..field..) => true
(keyword? ..field2..) => true
(keyword? ..field-alias..) => true)
(-> (table ..table..)
(project [..field..])
(rename {..field.. ..field-alias..}))
=> {:tables {..table.. ..table..}
:fields {..field-alias.. [..table.. ..field..]}}
(-> (table ..table..)
(project [..field.. ..field2..])
(rename {..field.. ..field-alias..}))
=> {:tables {..table.. ..table..}
:fields {..field-alias.. [..table.. ..field..]
..field2.. [..table.. ..field2..]}}
(-> {:tables {..table.. ..table..,
..table2.. ..table2..}
:fields {..field.. [..table.. ..field..]
..field2.. [..table.. ..field2..]}}
(rename {..field.. ..field-alias..}))
=> {:tables {..table.. ..table.., ..table2.. ..table2..}
:fields {..field-alias.. [..table.. ..field..]
..field2.. [..table.. ..field2..]}})
(fact "joining tables merges tables and fields"
)
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