99 lines
3.4 KiB
C#
99 lines
3.4 KiB
C#
using System.Text.Json;
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using Recordingtest.DiffReporter;
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using Xunit;
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namespace Recordingtest.DiffReporter.Tests;
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public class DifferTests
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{
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private static string TempDir()
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{
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var d = Path.Combine(Path.GetTempPath(), "diffrep-" + Guid.NewGuid().ToString("N"));
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Directory.CreateDirectory(d);
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return d;
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}
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[Fact]
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public void Identical_JsonFiles_ReturnsIdentical()
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{
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var dir = TempDir();
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var a = Path.Combine(dir, "a.json");
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var b = Path.Combine(dir, "b.json");
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File.WriteAllText(a, "{\"x\":1,\"y\":\"hi\"}");
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File.WriteAllText(b, "{\"x\":1,\"y\":\"hi\"}");
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var r = Differ.Compare(a, b);
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Assert.True(r.Identical);
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Assert.Empty(r.Hunks);
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}
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[Fact]
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public void OneFieldChanged_JsonFiles_OneHunk()
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{
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var dir = TempDir();
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var a = Path.Combine(dir, "a.json");
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var b = Path.Combine(dir, "b.json");
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File.WriteAllText(a, "{\"x\":1,\"y\":\"hi\"}");
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File.WriteAllText(b, "{\"x\":2,\"y\":\"hi\"}");
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var r = Differ.Compare(a, b);
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Assert.False(r.Identical);
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Assert.Single(r.Hunks);
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Assert.Equal("changed", r.Hunks[0].Kind);
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}
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[Fact]
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public void BinaryDiff_ReturnsHexSummary()
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{
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var dir = TempDir();
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var a = Path.Combine(dir, "a.bin");
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var b = Path.Combine(dir, "b.bin");
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File.WriteAllBytes(a, new byte[] { 0x00, 0x01, 0x02, 0xFF, 0x80 });
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File.WriteAllBytes(b, new byte[] { 0x00, 0x01, 0x03, 0xFE, 0x80 });
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var r = Differ.Compare(a, b);
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Assert.False(r.Identical);
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Assert.NotEmpty(r.Hunks);
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foreach (var h in r.Hunks)
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{
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// hex strings only
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Assert.Matches("^[0-9A-F]*$", h.Before);
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Assert.Matches("^[0-9A-F]*$", h.After);
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}
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}
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[Fact]
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public void Cli_IdenticalFiles_ExitZero_And_DiffJsonExists()
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{
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var dir = TempDir();
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var a = Path.Combine(dir, "a.json");
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var b = Path.Combine(dir, "b.json");
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File.WriteAllText(a, "{\"x\":1}");
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File.WriteAllText(b, "{\"x\":1}");
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var outDir = Path.Combine(dir, "out");
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var code = Cli.Program.Main(new[] { "--approved", a, "--received", b, "--out", outDir });
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Assert.Equal(0, code);
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Assert.True(File.Exists(Path.Combine(outDir, "diff.json")));
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Assert.True(File.Exists(Path.Combine(outDir, "diff.md")));
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}
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[Fact]
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public void TriageReadable_DiffJson_CanBeParsed()
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{
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var dir = TempDir();
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var a = Path.Combine(dir, "a.json");
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var b = Path.Combine(dir, "b.json");
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File.WriteAllText(a, "{\"x\":1}");
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File.WriteAllText(b, "{\"x\":2}");
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var outDir = Path.Combine(dir, "out");
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var code = Cli.Program.Main(new[] { "--approved", a, "--received", b, "--out", outDir });
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Assert.Equal(1, code);
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var json = File.ReadAllText(Path.Combine(outDir, "diff.json"));
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using var doc = JsonDocument.Parse(json);
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var root = doc.RootElement;
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Assert.True(root.TryGetProperty("file", out _));
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Assert.True(root.TryGetProperty("hunks", out _));
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Assert.True(root.TryGetProperty("summary", out var summary));
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Assert.True(summary.TryGetProperty("added", out _));
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Assert.True(summary.TryGetProperty("removed", out _));
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Assert.True(summary.TryGetProperty("changed", out _));
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}
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}
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