public ModuleDifference[] CompareTo(ModuleManifest other)
{
var modulePathComparer = new ModulePathComparer(pathComparer);
var currentModules = new HashSet <Module>(modules, modulePathComparer);
var oldModules = new HashSet <Module>(other.Modules, modulePathComparer);
var addedModules = currentModules.Except(oldModules, modulePathComparer);
var added = addedModules.Select(m => new ModuleDifference(m, ModuleDifferenceType.Added));
var deletedModules = oldModules.Except(currentModules, modulePathComparer);
var deleted = deletedModules.Select(m => new ModuleDifference(m, ModuleDifferenceType.Deleted));
// Changed module means old and current have the same path, but different hash.
// Use Join to pair up the modules by path.
// Then use Where to filter out those with same hash.
var changedModules = oldModules.Join(currentModules, m => m.Path, m => m.Path, (old, current) => new { old, current })
.Where(c => c.current.Equals(c.old) == false);
// So deleted the old modules and add the current modules.
var changes = changedModules.SelectMany(c => new[]
{
new ModuleDifference(c.old, ModuleDifferenceType.Deleted),
new ModuleDifference(c.current, ModuleDifferenceType.Added)
}
);
return(added.Concat(deleted).Concat(changes).ToArray());
}
public void Identical_ModuleManifests_have_no_differences()
{
var oldModuleManifest = new ModuleManifest(new[]
{
new Module(
@"scripts/module-a",
new Resource[]
{
new Resource(@"scripts/module-a/test.js", new byte[0], new string[0])
},
new string[0],
null
),
new Module(@"scripts/module-b", new Resource[0], new string[0], null)
});
var newModuleManifest = new ModuleManifest(new[]
{
new Module(
@"scripts/module-a",
new Resource[]
{
new Resource(@"scripts/module-a/test.js", new byte[0], new string[0])
},
new string[0],
null
),
new Module(@"scripts/module-b", new Resource[0], new string[0], null)
});
var differences = newModuleManifest.CompareTo(oldModuleManifest);
differences.Length.ShouldEqual(0);
}
public ModuleContainer(IEnumerable <Module> modules, IsolatedStorageFile storage, Func <TextWriter, IModuleWriter> createModuleWriter)
{
this.modules = modules.ToArray();
this.manifest = new ModuleManifest(this.modules);
this.storage = storage;
this.createModuleWriter = createModuleWriter;
modulesByScriptPath = (
from module in this.modules
from resource in module.Resources
select new { resource.Path, module }
).ToDictionary(x => x.Path, x => x.module, pathComparer);
}
public void Compare_ModuleManifest_with_added_module_to_old_returns_difference()
{
var oldModuleManifest = new ModuleManifest(new Module[0]);
Module module;
var newModuleManifest = new ModuleManifest(new[]
{
module = new Module(
@"scripts/module-a",
new Resource[0],
new string[0],
null
)
});
var differences = newModuleManifest.CompareTo(oldModuleManifest);
differences.Length.ShouldEqual(1);
differences[0].Type.ShouldEqual(ModuleDifferenceType.Added);
differences[0].Module.ShouldEqual(module);
}
public void Compare_ModuleManifest_with_changed_module_to_old_returns_Add_and_Delete_differences()
{
Module oldModule;
var oldModuleManifest = new ModuleManifest(new[]
{
oldModule = new Module(
@"scripts/module-a",
new Resource[]
{
new Resource(@"scripts/module-a/test.js", new byte[] { 1 }, new string[0])
},
new string[0],
null
)
});
Module changedModule;
var newModuleManifest = new ModuleManifest(new[]
{
changedModule = new Module(
@"scripts/module-a",
new Resource[]
{
new Resource(@"scripts/module-a/test.js", new byte[] { 2 }, new string[0])
},
new string[0],
null
)
});
var differences = newModuleManifest.CompareTo(oldModuleManifest);
differences.Length.ShouldEqual(2);
differences[0].Type.ShouldEqual(ModuleDifferenceType.Deleted);
differences[0].Module.ShouldEqual(oldModule);
differences[1].Type.ShouldEqual(ModuleDifferenceType.Added);
differences[1].Module.ShouldEqual(changedModule);
}
XDocument CreateManifestXml(ModuleManifest moduleContainer)
{
return(new XDocument(
new XElement("manifest",
from module in moduleContainer.Modules
select new XElement("module",
new XAttribute("path", module.Path),
module.Location != null ? new XAttribute("location", module.Location) : null,
from resource in module.Resources
select new XElement("resource",
new XAttribute("path", resource.Path),
new XAttribute("hash", resource.Hash.ToHexString())
),
from reference in module.References
select new XElement("reference",
new XAttribute("path", reference)
)
)
)
));
}
public void Write(ModuleManifest manifest)
{
CreateManifestXml(manifest).Save(stream);
}