public void Compare_returns_0_only_for_commands_that_are_equal()
{
var mCC = new ModificationCommandComparer();
var configuration = new DbContext(new DbContextOptions().UseInMemoryStore(persist: false)).Configuration;
var entityType = new Entity.Metadata.Model().AddEntityType(typeof(object));
var key = entityType.GetOrAddProperty("Id", typeof(int), shadowProperty: true);
entityType.GetOrSetPrimaryKey(key);
var stateEntry1 = new MixedStateEntry(configuration, entityType, new object());
stateEntry1[key] = 0;
stateEntry1.EntityState = EntityState.Added;
var modificationCommandAdded = new ModificationCommand(new SchemaQualifiedName("A"), new ParameterNameGenerator(), p => p.Relational());
modificationCommandAdded.AddStateEntry(stateEntry1);
var stateEntry2 = new MixedStateEntry(configuration, entityType, new object());
stateEntry2[key] = 1;
stateEntry2.EntityState = EntityState.Modified;
var modificationCommandModified = new ModificationCommand(new SchemaQualifiedName("A"), new ParameterNameGenerator(), p => p.Relational());
modificationCommandModified.AddStateEntry(stateEntry2);
var stateEntry3 = new MixedStateEntry(configuration, entityType, new object());
stateEntry3[key] = 2;
stateEntry3.EntityState = EntityState.Deleted;
var modificationCommandDeleted = new ModificationCommand(new SchemaQualifiedName("A"), new ParameterNameGenerator(), p => p.Relational());
modificationCommandDeleted.AddStateEntry(stateEntry3);
Assert.True(0 == mCC.Compare(modificationCommandAdded, modificationCommandAdded));
Assert.True(0 == mCC.Compare(null, null));
Assert.True(0 == mCC.Compare(
new ModificationCommand(new SchemaQualifiedName("A", "dbo"), new ParameterNameGenerator(), p => p.Relational()),
new ModificationCommand(new SchemaQualifiedName("A", "dbo"), new ParameterNameGenerator(), p => p.Relational())));
Assert.True(0 > mCC.Compare(null, new ModificationCommand(new SchemaQualifiedName("A"), new ParameterNameGenerator(), p => p.Relational())));
Assert.True(0 < mCC.Compare(new ModificationCommand(new SchemaQualifiedName("A"), new ParameterNameGenerator(), p => p.Relational()), null));
Assert.True(0 > mCC.Compare(
new ModificationCommand(new SchemaQualifiedName("A"), new ParameterNameGenerator(), p => p.Relational()),
new ModificationCommand(new SchemaQualifiedName("A", "dbo"), new ParameterNameGenerator(), p => p.Relational())));
Assert.True(0 < mCC.Compare(
new ModificationCommand(new SchemaQualifiedName("A", "dbo"), new ParameterNameGenerator(), p => p.Relational()),
new ModificationCommand(new SchemaQualifiedName("A"), new ParameterNameGenerator(), p => p.Relational())));
Assert.True(0 > mCC.Compare(
new ModificationCommand(new SchemaQualifiedName("A", "dbo"), new ParameterNameGenerator(), p => p.Relational()),
new ModificationCommand(new SchemaQualifiedName("A", "foo"), new ParameterNameGenerator(), p => p.Relational())));
Assert.True(0 < mCC.Compare(
new ModificationCommand(new SchemaQualifiedName("A", "foo"), new ParameterNameGenerator(), p => p.Relational()),
new ModificationCommand(new SchemaQualifiedName("A", "dbo"), new ParameterNameGenerator(), p => p.Relational())));
Assert.True(0 > mCC.Compare(
new ModificationCommand(new SchemaQualifiedName("A"), new ParameterNameGenerator(), p => p.Relational()),
new ModificationCommand(new SchemaQualifiedName("B"), new ParameterNameGenerator(), p => p.Relational())));
Assert.True(0 < mCC.Compare(
new ModificationCommand(new SchemaQualifiedName("B"), new ParameterNameGenerator(), p => p.Relational()),
new ModificationCommand(new SchemaQualifiedName("A"), new ParameterNameGenerator(), p => p.Relational())));
Assert.True(0 > mCC.Compare(modificationCommandModified, modificationCommandAdded));
Assert.True(0 < mCC.Compare(modificationCommandAdded, modificationCommandModified));
Assert.True(0 > mCC.Compare(modificationCommandDeleted, modificationCommandAdded));
Assert.True(0 < mCC.Compare(modificationCommandAdded, modificationCommandDeleted));
Assert.True(0 > mCC.Compare(modificationCommandDeleted, modificationCommandModified));
Assert.True(0 < mCC.Compare(modificationCommandModified, modificationCommandDeleted));
}