public void JsonMapBuilder_EveryTwo()
{
string sampleFilePath = "Map.TinyArray.json";
File.WriteAllText(sampleFilePath, Extractor.GetResourceText("Map.TinyArray.json"));
// File: 300b.
// Map: Root (90b) + Array (5b x 50 (Count 100 / Every 2)) = 340b
JsonMapNode root = JsonMapBuilder.Build(sampleFilePath, new JsonMapSettings(350.0 / 300.0));
// 100 array elements, only 50 starts, every = 2
Assert.Equal(100, root.Count);
Assert.Equal(50, root.ArrayStarts.Count);
Assert.Equal(2, root.Every);
// Verify we see a[0], a[2], a[4], ...
Assert.Equal(1, root.ArrayStarts[0]);
Assert.Equal(7, root.ArrayStarts[1]);
Assert.Equal(13, root.ArrayStarts[2]);
// Ask the lookup method to find the positions of every element (every 3 bytes for "#, "
for (int i = 0; i < root.Count; ++i)
{
long position = root.FindArrayStart(i, () => File.OpenRead(sampleFilePath));
Assert.Equal(1 + 3 * i, position);
}
}
public void JsonMapBuilder_EveryTwo()
{
string sampleFilePath = "Map.TinyArray.json";
File.WriteAllText(sampleFilePath, Extractor.GetResourceText("Map.TinyArray.json"));
// Allow a map 1x the size of the original file
JsonMapBuilder builder = new JsonMapBuilder(1);
JsonMapNode root = builder.Build(sampleFilePath);
// 100 array elements, only 50 starts, every = 2
Assert.Equal(100, root.Count);
Assert.Equal(50, root.ArrayStarts.Count);
Assert.Equal(2, root.Every);
// Verify we see a[0], a[2], a[4], ...
Assert.Equal(1, root.ArrayStarts[0]);
Assert.Equal(7, root.ArrayStarts[1]);
Assert.Equal(13, root.ArrayStarts[2]);
// Ask the lookup method to find the positions of every element (every 3 bytes for "#, "
for (int i = 0; i < root.Count; ++i)
{
long position = root.FindArrayStart(i, () => File.OpenRead(sampleFilePath));
Assert.Equal(1 + 3 * i, position);
}
}