test_sqlgeneration.py :  » Database » PyTable » pytable-0.8.20a » pytable » tests » Python Open Source

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Python Open Source » Database » PyTable 
PyTable » pytable 0.8.20a » pytable » tests » test_sqlgeneration.py
from pytable import dbschema,sqlgeneration
import unittest, re

field1 = dbschema.FieldSchema(
  name = "field1",
  dbDataType = "text",
  defaultValue = "'default'",
)
fieldNoDefault = dbschema.FieldSchema(
  name = "fieldNoDef",
  dbDataType = "text",
)
fieldNoNULL = dbschema.FieldSchema(
  name = "fieldNoNULL",
  dbDataType = "text",
  nullOk = 0,
)
fieldNoNULL2 = dbschema.FieldSchema(
  name = "fieldNoNULL2",
  dbDataType = "text",
  constraints = [
    dbschema.NotNullConstraint(
      fields = "fieldNoNULL2",
    )
  ],
)
fieldSized = dbschema.FieldSchema(
  name = "fieldSized",
  dbDataType = "varchar",
  displaySize = 23,
)
tableSimple = dbschema.TableSchema(
  name = "tableSimple",
  fields = [
  ],
)
fieldForeign = dbschema.FieldSchema(
  name = "fieldForeign",
  dbDataType = "text",
  constraints = [
    dbschema.ForeignKeyConstraint(
      foreignFields = 'something_id',
      foreignTable = 'something',
    )
  ],
)
tableFieldsOnly = dbschema.TableSchema(
  name = "table1",
  fields = [
    field1,
    fieldNoDefault,
    fieldNoNULL,
    fieldNoNULL2,
    fieldSized,
    fieldForeign,
  ],
)
tUniqueConstraint = dbschema.UniqueConstraint(
  fields = "field1",
)
tPrimaryConstraint = dbschema.PrimaryConstraint(
  fields = ["fieldNoNULL2","fieldSized"],
)
tCheckConstraint = dbschema.CheckConstraint(
  expression = "field1 > 23",
)
tForeignConstraint = dbschema.ForeignKeyConstraint(
  fields = "fieldNoNULL",
  foreignFields = 'something_id',
  foreignTable = 'something',
)


tableConstraints = dbschema.TableSchema(
  name = "table1",
  fields = [
    field1,
    fieldNoDefault,
    fieldNoNULL,
    fieldNoNULL2,
    fieldSized,
    fieldForeign,
  ],
  constraints = [
    tUniqueConstraint,
    tPrimaryConstraint,
    tCheckConstraint,
    tForeignConstraint,
  ],
)

index = dbschema.IndexSchema(
  name = "",
  unique = 1,
  fields = ('a','b','c'),
  table = "that",
  where = "b > 32 and c < 15",
  accessMethod = "BTREE",
)
tableRecords = dbschema.TableSchema(
  name = "table1",
  fields = [
    field1,
    fieldNoDefault,
  ],
  defaultRecords = [
    { field1.name: "test" },
    { fieldNoDefault.name: "test2"},
  ],
)


class FieldGenerateTest (unittest.TestCase):
  def setUp( self ):
    self.creator = sqlgeneration.SQLCreateStatements()
  def testSimple(self):
    result = self.creator.tableField(
      schema = field1,
    )
    assert result.find(field1.name.lower()) > -1, result
    assert result.find(field1.dbDataType.upper()) > -1, result
    assert result.find(field1.defaultValue) > -1, result
  def testNoDefault(self):
    result = self.creator.tableField(
      schema = fieldNoDefault,
    )
    assert result.find(fieldNoDefault.name.lower()) > -1, result
    assert result.find(fieldNoDefault.dbDataType.upper()) > -1, result
    assert not (result.lower().find("default") > -1), result
  def testNoNULL(self):
    result = self.creator.tableField(
      schema = fieldNoNULL,
    )
    assert result.find(fieldNoNULL.name.lower()) > -1, result
    assert result.find(fieldNoNULL.dbDataType.upper()) > -1, result
    assert result.find("NOT NULL") > -1, result
  def testNoNULLConstraint(self):
    result = self.creator.tableField(
      schema = fieldNoNULL2,
    )
    assert result.find(fieldNoNULL2.name.lower()) > -1, result
    assert result.find(fieldNoNULL2.dbDataType.upper()) > -1, result
    assert result.find("NOT NULL") > -1, result
  def testSize (self):
    result = self.creator.tableField(
      schema = fieldSized,
    )
    assert result.find(fieldSized.name.lower()) > -1, result
    predicted = ("%s(%s)"%(fieldSized.dbDataType.upper(),fieldSized.displaySize)).upper()
    assert result.find(predicted) > -1, result
  def testFailNoType( self ):
    self.failUnlessRaises(
      AttributeError,
      self.creator.tableField,
      schema = dbschema.FieldSchema(
        name = "test",
        displaySize = 23,
      ),
    )
  def testFailNoName( self ):
    self.failUnlessRaises(
      AttributeError,
      self.creator.tableField,
      schema = dbschema.FieldSchema(
        dbDataType="int",
      ),
    )
  def testGuessType(self):
    for prefix, type in self.creator.fieldPrefixToTypeMap:
      result = self.creator.tableField(
        cursor = None,
        schema = dbschema.FieldSchema(
          name="test",
          dataType = prefix,
        ),
      )
      assert result.find(type) > -1, result
  def testForeign( self ):
    result = self.creator.tableField(
      cursor = None,
      schema = fieldForeign,
    )
    match = re.match(
      "(\w+)\W+(\w+)\W+REFERENCES\W+\w+\W+\((.*)\)",
      result,
      re.I|re.M|re.DOTALL,
    )
    assert match, result
    for foreign in fieldForeign.constraints[0].foreignFields:
      assert match.group(3).find( foreign ) > -1, """Field %s not in result"""%( foreign, )
  
  
  
class TableGenerateTest (unittest.TestCase):
  """Tests of the table-creation-SQL-generation mechanisms"""
  def setUp( self ):
    self.creator = sqlgeneration.SQLCreateStatements()
  def testSimple(self):
    result = self.creator(
      tableSimple
    )
    assert len(result) == 1, """More than one statement for simple table"""
    result = result[0]
    assert result.find(tableSimple.name.lower()) > -1, result
    match = re.match(
      "CREATE\W+TABLE\W+(\w+)\W+\(\W+\)\W*;",
      result,
      re.I|re.M|re.DOTALL,
    )
    assert match, result
  def testIncludesFields (self):
    """Test that field values are included in table SQL"""
    result = self.creator(
      tableFieldsOnly
    )
    assert len(result) == 1, """More than one statement for simple table"""
    result = result[0]
    match = re.match(
      "CREATE\W+TABLE\W+(\w+)\W+\((.*)\)\W*;",
      result,
      re.I|re.MULTILINE|re.DOTALL,
    )
    assert match, result
    for field in tableFieldsOnly.fields:
      assert match.group(2).find(self.creator.tableField( field )) > -1, """Field %r definition isn't present in result %r"""%( field.name, result)
  def testTConstraints( self ):
    for constraint, pattern in [
      (tUniqueConstraint, "UNIQUE\W*\(.*\)"),
      (tPrimaryConstraint, "PRIMARY\W+KEY\W*\(.*\)"),
      (tForeignConstraint, "FOREIGN\W+KEY\W*\(.*\)\W*REFERENCES\W+\w+"),
      (tCheckConstraint, "CHECK\W*\(.*\)"),
    ]:
      result = self.creator.tableConstraint(
        constraint, tableConstraints
      )
      match = re.match(
        pattern,
        result,
        re.I|re.MULTILINE|re.DOTALL,
      )
      assert match, """Table Constraint %s didn't match expected pattern: got %s"""%(constraint, result)
    
      
  def testTableConstraints( self ):
    result = self.creator(
      tableConstraints
    )
    assert len(result) == 1, """More than one statement for simple table"""
    result = result[0]
    match = re.match(
      "CREATE\W+TABLE\W+(\w+)\W+\((.*)\)\W*;",
      result,
      re.I|re.MULTILINE|re.DOTALL,
    )
    for constraint in tableConstraints.constraints:
      assert match.group(2).find(self.creator.tableConstraint(
        constraint,
        target=tableConstraints,
      )) > -1, """Constraint %r definition isn't present in result %r"""%( constraint.name, result)
  def testTableRecords( self ):
    result = self.creator(
      tableRecords
    )
    # this is a multiple-value set
    assert isinstance( result, list )
    assert len( result ) == 3, """Expected 3 statements for this table, got %r: %r"""%(len(result), result)
    assert result[0].startswith( "CREATE TABLE" )
    for result,record in map(None, result[1:],tableRecords.defaultRecords):
      tableName = tableRecords.name
      fieldName = record.keys()[0]
      search = re.compile(
        "INSERT\W+INTO\W+%(tableName)s+\W*\(.*%(fieldName)s.*\)\W+VALUES\W+(\((.+)\))?\W*;"%locals(),
        re.I|re.MULTILINE|re.DOTALL,
      )
      value = search.search( result )
      assert value
        
    
    
class IndexGenerateTest(unittest.TestCase):
  """Tests of the table-creation-SQL-generation mechanisms"""
  def setUp( self ):
    self.creator = sqlgeneration.SQLCreateStatements()
  def testSimple(self):
    result = self.creator(
      index
    )
    match = re.match(
      "CREATE\W+UNIQUE\W+INDEX\W+(.+)\W+ON\W+\w+\W+USING\W+BTREE\W*\(.*\)\W+WHERE.*;",
      result,
      re.I|re.MULTILINE|re.DOTALL,
    )
    assert match, result
    

if __name__ == "__main__":
  unittest.main ()
  
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