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HEEDLS-467 Change units and remove decimal place below gigabytes #487

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Jul 13, 2021
Merged

HEEDLS-467 Change units and remove decimal place below gigabytes #487

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2600a32
HEEDLS-467 Change units and remove decimal place below gigabytes
AlexJacksonDS Jul 13, 2021
4cf4886
HEEDLS-467 Add unit tests for decimal values
AlexJacksonDS Jul 13, 2021
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27 changes: 24 additions & 3 deletions DigitalLearningSolutions.Web.Tests/Helpers/DisplayStringHelperTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
public class DisplayStringHelperTests
{
private const long Gibibyte = 1073741824;
private const long Mebibyte = 1048576;

[Test]
public void GenerateNumberWithLimitDisplayString_returns_expected_string_with_limit()
Expand Down Expand Up @@ -46,7 +47,7 @@ public void FormatBytesWithLimit_returns_expected_string_for_kilobytes()
var result = DisplayStringHelper.FormatBytesWithLimit(12, 1200);

// Then
result.Should().Be("12B / 1.2KiB");
result.Should().Be("12B / 1KB");
}

[Test]
Expand All @@ -56,7 +57,27 @@ public void FormatBytesWithLimit_returns_expected_string_for_gibibytes()
var result = DisplayStringHelper.FormatBytesWithLimit(12, Gibibyte);

// Then
result.Should().Be("12B / 1GiB");
result.Should().Be("12B / 1GB");
}

[Test]
public void FormatBytesWithLimit_returns_expected_string_for_gibibytes_with_decimal()
{
// When
var result = DisplayStringHelper.FormatBytesWithLimit(12, Gibibyte + 500000000);

// Then
result.Should().Be("12B / 1.5GB");
}

[Test]
public void FormatBytesWithLimit_returns_expected_string_for_mebibytes_with_decimal()
{
// When
var result = DisplayStringHelper.FormatBytesWithLimit(12, Mebibyte + 800000);

// Then
result.Should().Be("12B / 2MB");
}

[Test]
Expand All @@ -69,7 +90,7 @@ public void FormatBytesWithLimit_returns_expected_string_when_less_than_next_siz
var result = DisplayStringHelper.FormatBytesWithLimit(12, bytes);

// Then
result.Should().Be("12B / 1024MiB");
result.Should().Be("12B / 1024MB");
}

[Test]
Expand Down
2 changes: 1 addition & 1 deletion ...ningSolutions.Web.Tests/ViewModels/TrackingSystem/Centre/ContractDetailsViewModelTests.cs
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Expand Up @@ -40,7 +40,7 @@ public void AdminUsers_and_Centre_populate_expected_values()
viewModel.TrainersColour.Should().Be("green");
viewModel.CustomCourses.Should().Be("10 / 12");
viewModel.CustomCoursesColour.Should().Be("yellow");
viewModel.ServerSpace.Should().Be("1KiB / 1GiB");
viewModel.ServerSpace.Should().Be("1KB / 1GB");
viewModel.ServerSpaceColour.Should().Be("green");
}

Expand Down
6 changes: 4 additions & 2 deletions DigitalLearningSolutions.Web/Helpers/DisplayStringHelper.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@
public static class DisplayStringHelper
{
private const string Divider = " / ";
private static readonly string[] Units = { "B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB" };
private static readonly string[] Units = { "B", "KB", "MB", "GB", "TB", "PB", "EB" };

public static string FormatNumberWithLimit(int number, int limit)
{
Expand All @@ -30,7 +30,9 @@ private static string GenerateBytesDisplayString(long byteCount)
}

var place = Convert.ToInt32(Math.Floor(Math.Log(byteCount, 1024)));
var number = Math.Round(byteCount / Math.Pow(1024, place), 1);
// Do not include decimal place below GB
var decimalPlaces = place <= 2 ? 0 : 1;
var number = Math.Round(byteCount / Math.Pow(1024, place), decimalPlaces);
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return (Math.Sign(byteCount) * number) + Units[place];
}
}
Expand Down