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feat: add assertions for HasDirectoriesMatching #42

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merged 2 commits into from
Sep 1, 2023
Merged

feat: add assertions for HasDirectoriesMatching #42

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df5f8f8
Add assertions for HasDirectories
vbreuss Sep 1, 2023
fb2fd1b
Fix FailWith messages
vbreuss Sep 1, 2023
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99 changes: 85 additions & 14 deletions Source/Testably.Abstractions.FluentAssertions/DirectoryAssertions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,36 +17,45 @@ internal DirectoryAssertions(IDirectoryInfo? instance)
}

/// <summary>
/// Asserts that the directory contains exactly one file matching the given <paramref name="searchPattern"/>.
/// Asserts that the current directory has at least <paramref name="minimumCount" /> directories which match the
/// <paramref name="searchPattern" />.
/// </summary>
public AndWhichConstraint<FileSystemAssertions, FileAssertions> HasSingleFileMatching(
string searchPattern = "*", string because = "", params object[] becauseArgs)
public AndConstraint<DirectoryAssertions> HasDirectoriesMatching(
string searchPattern = "*",
int minimumCount = 1,
string because = "",
params object[] becauseArgs)
{
Execute.Assertion
.WithDefaultIdentifier(Identifier)
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
"You can't assert a directory having a given file if it is null")
"You can't assert a directory having directories if the DirectoryInfo is null.")
.Then
.ForCondition(!string.IsNullOrEmpty(searchPattern))
.FailWith(
"You can't assert a directory having a given file if you don't pass a proper name")
"You can't assert a directory having directories if you don't pass a proper search pattern.")
.Then
.Given(() => Subject!)
.ForCondition(directoryInfo
=> directoryInfo.GetFiles(searchPattern).Length == 1)
=> directoryInfo.GetDirectories(searchPattern).Length >= minimumCount)
.FailWith(
"Expected {context} {1} to contain exactly one file matching {0}{reason}, but found {2}.",
$"Expected {{context}} {{1}} to contain at least {(minimumCount == 1 ? "one directory" : $"{minimumCount} directories")} matching {{0}}{{reason}}, but {(minimumCount == 1 ? "none was" : "only {2} were")} found.",
_ => searchPattern,
directoryInfo => directoryInfo.Name,
directoryInfo => directoryInfo.GetFiles(searchPattern).Length);

return new AndWhichConstraint<FileSystemAssertions, FileAssertions>(
new FileSystemAssertions(Subject!.FileSystem),
new FileAssertions(Subject!.GetFiles(searchPattern).Single()));
directoryInfo => directoryInfo.GetDirectories(searchPattern).Length);

return new AndConstraint<DirectoryAssertions>(this);
}

/// <summary>
/// Asserts that the current directory has at least one directory which matches the <paramref name="searchPattern" />.
/// </summary>
public AndConstraint<DirectoryAssertions> HasDirectoryMatching(
string searchPattern = "*", string because = "", params object[] becauseArgs)
=> HasDirectoriesMatching(searchPattern, 1, because, becauseArgs);

/// <summary>
/// Asserts that the current directory has at least one file which matches the <paramref name="searchPattern" />.
/// </summary>
Expand All @@ -69,11 +78,11 @@ public AndConstraint<DirectoryAssertions> HasFilesMatching(
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
"You can't assert a directory having files if the DirectoryInfo is null")
"You can't assert a directory having files if the DirectoryInfo is null.")
.Then
.ForCondition(!string.IsNullOrEmpty(searchPattern))
.FailWith(
"You can't assert a directory having files if you don't pass a proper name")
"You can't assert a directory having files if you don't pass a proper search pattern.")
.Then
.Given(() => Subject!)
.ForCondition(directoryInfo
Expand All @@ -86,4 +95,66 @@ public AndConstraint<DirectoryAssertions> HasFilesMatching(

return new AndConstraint<DirectoryAssertions>(this);
}

/// <summary>
/// Asserts that the directory contains exactly one directory matching the given <paramref name="searchPattern" />.
/// </summary>
public AndWhichConstraint<FileSystemAssertions, DirectoryAssertions> HasSingleDirectoryMatching(
string searchPattern = "*", string because = "", params object[] becauseArgs)
{
Execute.Assertion
.WithDefaultIdentifier(Identifier)
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
"You can't assert a directory having a given directory if it is null.")
.Then
.ForCondition(!string.IsNullOrEmpty(searchPattern))
.FailWith(
"You can't assert a directory having a given directory if you don't pass a proper search pattern.")
.Then
.Given(() => Subject!)
.ForCondition(directoryInfo
=> directoryInfo.GetDirectories(searchPattern).Length == 1)
.FailWith(
"Expected {context} {1} to contain exactly one directory matching {0}{reason}, but found {2}.",
_ => searchPattern,
directoryInfo => directoryInfo.Name,
directoryInfo => directoryInfo.GetDirectories(searchPattern).Length);

return new AndWhichConstraint<FileSystemAssertions, DirectoryAssertions>(
new FileSystemAssertions(Subject!.FileSystem),
new DirectoryAssertions(Subject!.GetDirectories(searchPattern).Single()));
}

/// <summary>
/// Asserts that the directory contains exactly one file matching the given <paramref name="searchPattern" />.
/// </summary>
public AndWhichConstraint<FileSystemAssertions, FileAssertions> HasSingleFileMatching(
string searchPattern = "*", string because = "", params object[] becauseArgs)
{
Execute.Assertion
.WithDefaultIdentifier(Identifier)
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
"You can't assert a directory having a given file if it is null.")
.Then
.ForCondition(!string.IsNullOrEmpty(searchPattern))
.FailWith(
"You can't assert a directory having a given file if you don't pass a proper search pattern.")
.Then
.Given(() => Subject!)
.ForCondition(directoryInfo
=> directoryInfo.GetFiles(searchPattern).Length == 1)
.FailWith(
"Expected {context} {1} to contain exactly one file matching {0}{reason}, but found {2}.",
_ => searchPattern,
directoryInfo => directoryInfo.Name,
directoryInfo => directoryInfo.GetFiles(searchPattern).Length);

return new AndWhichConstraint<FileSystemAssertions, FileAssertions>(
new FileSystemAssertions(Subject!.FileSystem),
new FileAssertions(Subject!.GetFiles(searchPattern).Single()));
}
}
23 changes: 22 additions & 1 deletion Source/Testably.Abstractions.FluentAssertions/DirectoryInfoAssertions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,16 @@ internal DirectoryInfoAssertions(IDirectoryInfo? instance)
{
}

/// <summary>
/// Asserts that the current directory has at least one directory which matches the <paramref name="searchPattern" />.
/// </summary>
public AndConstraint<DirectoryInfoAssertions> HaveDirectoryMatching(
string searchPattern = "*", string because = "", params object[] becauseArgs)
{
new DirectoryAssertions(Subject).HasDirectoryMatching(searchPattern, because, becauseArgs);
return new AndConstraint<DirectoryInfoAssertions>(this);
}

/// <summary>
/// Asserts that the current directory has at least one file which matches the <paramref name="searchPattern" />.
/// </summary>
Expand All @@ -24,12 +34,23 @@ public AndConstraint<DirectoryInfoAssertions> HaveFileMatching(
return new AndConstraint<DirectoryInfoAssertions>(this);
}

/// <summary>
/// Asserts that the directory contains exactly one directory matching the given <paramref name="searchPattern" />.
/// </summary>
public AndWhichConstraint<FileSystemAssertions, DirectoryAssertions> HaveSingleDirectory(
string searchPattern = "*", string because = "", params object[] becauseArgs)
{
return new DirectoryAssertions(Subject).HasSingleDirectoryMatching(searchPattern, because,
becauseArgs);
}

/// <summary>
/// Asserts that the directory contains exactly one file matching the given <paramref name="searchPattern" />.
/// </summary>
public AndWhichConstraint<FileSystemAssertions, FileAssertions> HaveSingleFile(
string searchPattern = "*", string because = "", params object[] becauseArgs)
{
return new DirectoryAssertions(Subject).HasSingleFileMatching(searchPattern, because, becauseArgs);
return new DirectoryAssertions(Subject).HasSingleFileMatching(searchPattern, because,
becauseArgs);
}
}
14 changes: 7 additions & 7 deletions Source/Testably.Abstractions.FluentAssertions/FileAssertions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ public AndConstraint<FileAssertions> DoesNotHaveAttribute(
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
$"You can't assert that the file does not have attribute {attribute} if it is null")
$"You can't assert that the file does not have attribute {attribute} if it is null.")
.Then
.Given(() => Subject!)
.ForCondition(fileInfo => !fileInfo.Attributes.HasFlag(attribute))
Expand All @@ -51,7 +51,7 @@ public AndConstraint<FileAssertions> HasAttribute(
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
$"You can't assert that the file has attribute {attribute} if it is null")
$"You can't assert that the file has attribute {attribute} if it is null.")
.Then
.Given(() => Subject!)
.ForCondition(fileInfo => fileInfo.Attributes.HasFlag(attribute))
Expand All @@ -73,7 +73,7 @@ public AndConstraint<FileAssertions> HasContent(
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
"You can't assert the content of a file if the FileInfo is null")
"You can't assert the content of a file if the FileInfo is null.")
.Then
.Given(() => Subject!)
.ForCondition(fileInfo => fileInfo.FileSystem.File
Expand All @@ -97,7 +97,7 @@ public AndConstraint<FileAssertions> HasContent(
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
"You can't assert the content of a file if the FileInfo is null")
"You can't assert the content of a file if the FileInfo is null.")
.Then
.Given(() => Subject!)
.ForCondition(fileInfo => pattern.Matches(
Expand All @@ -121,7 +121,7 @@ public AndConstraint<FileAssertions> HasContent(
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
"You can't assert the content of a file if the FileInfo is null")
"You can't assert the content of a file if the FileInfo is null.")
.Then
.Given(() => Subject!)
.ForCondition(fileInfo => pattern.Matches(
Expand All @@ -144,7 +144,7 @@ public AndConstraint<FileAssertions> IsNotReadOnly(
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
"You can't assert that the file is not read-only if it is null")
"You can't assert that the file is not read-only if it is null.")
.Then
.Given(() => Subject!)
.ForCondition(fileInfo => !fileInfo.IsReadOnly)
Expand All @@ -166,7 +166,7 @@ public AndConstraint<FileAssertions> IsReadOnly(
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith(
"You can't assert that the file is read-only if it is null")
"You can't assert that the file is read-only if it is null.")
.Then
.Given(() => Subject!)
.ForCondition(fileInfo => fileInfo.IsReadOnly)
Expand Down
8 changes: 4 additions & 4 deletions Source/Testably.Abstractions.FluentAssertions/FileSystemAssertions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@ public AndWhichConstraint<FileSystemAssertions, DirectoryAssertions> HaveDirecto
.WithDefaultIdentifier(Identifier)
.BecauseOf(because, becauseArgs)
.ForCondition(!string.IsNullOrEmpty(path))
.FailWith("You can't assert that a directory exists if you don't pass a proper name.")
.FailWith("You can't assert that a directory exists if you don't pass a proper path.")
.Then
.Given(() => Subject.DirectoryInfo.New(path))
.ForCondition(directoryInfo => directoryInfo.Exists)
Expand All @@ -46,7 +46,7 @@ public AndWhichConstraint<FileSystemAssertions, FileAssertions> HaveFile(
.WithDefaultIdentifier(Identifier)
.BecauseOf(because, becauseArgs)
.ForCondition(!string.IsNullOrEmpty(path))
.FailWith("You can't assert that a file exists if you don't pass a proper name.")
.FailWith("You can't assert that a file exists if you don't pass a proper path.")
.Then
.Given(() => Subject.FileInfo.New(path))
.ForCondition(fileInfo => fileInfo.Exists)
Expand All @@ -69,7 +69,7 @@ public AndWhichConstraint<FileSystemAssertions, DirectoryAssertions> NotHaveDire
.BecauseOf(because, becauseArgs)
.ForCondition(!string.IsNullOrEmpty(path))
.FailWith(
"You can't assert that a directory does not exist if you don't pass a proper name.")
"You can't assert that a directory does not exist if you don't pass a proper path.")
.Then
.Given(() => Subject.DirectoryInfo.New(path))
.ForCondition(directoryInfo => !directoryInfo.Exists)
Expand All @@ -92,7 +92,7 @@ public AndWhichConstraint<FileSystemAssertions, FileAssertions> NotHaveFile(
.BecauseOf(because, becauseArgs)
.ForCondition(!string.IsNullOrEmpty(path))
.FailWith(
"You can't assert that a file does not exist if you don't pass a proper name.")
"You can't assert that a file does not exist if you don't pass a proper path.")
.Then
.Given(() => Subject.FileInfo.New(path))
.ForCondition(fileInfo => !fileInfo.Exists)
Expand Down
2 changes: 1 addition & 1 deletion Source/Testably.Abstractions.FluentAssertions/FileSystemInfoAssertions.cs
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Expand Up @@ -26,7 +26,7 @@ public AndConstraint<TFileSystemInfo> Exist(
.WithDefaultIdentifier(Identifier)
.BecauseOf(because, becauseArgs)
.ForCondition(Subject != null)
.FailWith("You can't assert that the {context} exists if it is null")
.FailWith("You can't assert that the {context} exists if it is null.")
.Then
.Given(() => Subject!)
.ForCondition(fileSystemInfo => fileSystemInfo.Exists)
Expand Down
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