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Add Imply() to BooleanAssertions #2074

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merged 20 commits into from Jan 3, 2023
Merged

Add Imply() to BooleanAssertions #2074

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7918ef1
Add `Imply()` to `BooleanAssertions`
IT-VBFK Dec 28, 2022
70dd569
Approve API
IT-VBFK Dec 28, 2022
4a2d67c
Add release notes
IT-VBFK Dec 28, 2022
c2a2344
Update the docs
IT-VBFK Dec 28, 2022
7c66a67
Fix possible `NullReferenceException`
IT-VBFK Dec 28, 2022
fa65a54
Test the because arguments
IT-VBFK Dec 28, 2022
694bd37
Add missing xml comments
IT-VBFK Dec 28, 2022
ade5b60
Fix test names and variable names
IT-VBFK Dec 28, 2022
0e82b92
Accept API changes
IT-VBFK Dec 28, 2022
7657c93
Using `CallerArgumentExpression`
IT-VBFK Dec 28, 2022
aa4ccbf
Accept API changes
IT-VBFK Dec 28, 2022
16f335f
Mention the `CallerArgumentExpression` in the docs
IT-VBFK Dec 28, 2022
1dbf235
Name the operands for the implication correctly
IT-VBFK Dec 29, 2022
97ccf12
Accept API changes
IT-VBFK Dec 29, 2022
3b134c9
Add documentation about necessity of the caller argument expression
IT-VBFK Dec 30, 2022
5c1a4f6
Remove `CallerArgumentExpression`
IT-VBFK Dec 30, 2022
c2ccbcc
Update Src/FluentAssertions/Primitives/BooleanAssertions.cs
IT-VBFK Jan 2, 2023
c2a49ef
Minor typo fixes
IT-VBFK Jan 2, 2023
6d09735
Switch from `MemberData` to `InlineData`
IT-VBFK Jan 3, 2023
3f340f5
Update Tests/FluentAssertions.Specs/Primitives/BooleanAssertionSpecs.cs
IT-VBFK Jan 3, 2023
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31 changes: 31 additions & 0 deletions Src/FluentAssertions/Primitives/BooleanAssertions.cs
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Expand Up @@ -118,6 +118,37 @@ public AndConstraint<TAssertions> NotBe(bool unexpected, string because = "", pa
return new AndConstraint<TAssertions>((TAssertions)this);
}

/// <summary>
/// Asserts that the value implies the specified <paramref name="consequent"/> value.
/// </summary>
/// <param name="consequent">The right hand side of the implication</param>
/// <param name="because">
/// A formatted phrase as is supported by <see cref="string.Format(string,object[])" /> explaining why the assertion
/// is needed. If the phrase does not start with the word <i>because</i>, it is prepended automatically.
/// </param>
/// <param name="becauseArgs">
/// Zero or more objects to format using the placeholders in <paramref name="because"/>.
/// </param>
public AndConstraint<TAssertions> Imply(bool consequent,
string because = "",
params object[] becauseArgs)
{
bool? antecedent = Subject;

Execute.Assertion
.ForCondition(antecedent is not null)
.BecauseOf(because, becauseArgs)
.WithExpectation("Expected {context:antecedent} ({0}) to imply consequent ({1}){reason}, ", antecedent, consequent)
.FailWith("but found null.")
.Then
.ForCondition(!antecedent.Value || consequent)
.FailWith("but it did not.")
.Then
.ClearExpectation();

return new AndConstraint<TAssertions>((TAssertions)this);
}

/// <inheritdoc/>
public override bool Equals(object obj) =>
throw new NotSupportedException("Equals is not part of Fluent Assertions. Did you mean Be() instead?");
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1 change: 1 addition & 0 deletions Tests/Approval.Tests/ApprovedApi/FluentAssertions/net47.verified.txt
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Expand Up @@ -1816,6 +1816,7 @@ namespace FluentAssertions.Primitives
public FluentAssertions.AndConstraint<TAssertions> BeFalse(string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> BeTrue(string because = "", params object[] becauseArgs) { }
public override bool Equals(object obj) { }
public FluentAssertions.AndConstraint<TAssertions> Imply(bool consequent, string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> NotBe(bool unexpected, string because = "", params object[] becauseArgs) { }
}
public class DateTimeAssertions : FluentAssertions.Primitives.DateTimeAssertions<FluentAssertions.Primitives.DateTimeAssertions>
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1 change: 1 addition & 0 deletions Tests/Approval.Tests/ApprovedApi/FluentAssertions/net6.0.verified.txt
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Expand Up @@ -1841,6 +1841,7 @@ namespace FluentAssertions.Primitives
public FluentAssertions.AndConstraint<TAssertions> BeFalse(string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> BeTrue(string because = "", params object[] becauseArgs) { }
public override bool Equals(object obj) { }
public FluentAssertions.AndConstraint<TAssertions> Imply(bool consequent, string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> NotBe(bool unexpected, string because = "", params object[] becauseArgs) { }
}
public class DateOnlyAssertions : FluentAssertions.Primitives.DateOnlyAssertions<FluentAssertions.Primitives.DateOnlyAssertions>
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1 change: 1 addition & 0 deletions Tests/Approval.Tests/ApprovedApi/FluentAssertions/netcoreapp2.1.verified.txt
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Expand Up @@ -1816,6 +1816,7 @@ namespace FluentAssertions.Primitives
public FluentAssertions.AndConstraint<TAssertions> BeFalse(string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> BeTrue(string because = "", params object[] becauseArgs) { }
public override bool Equals(object obj) { }
public FluentAssertions.AndConstraint<TAssertions> Imply(bool consequent, string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> NotBe(bool unexpected, string because = "", params object[] becauseArgs) { }
}
public class DateTimeAssertions : FluentAssertions.Primitives.DateTimeAssertions<FluentAssertions.Primitives.DateTimeAssertions>
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1 change: 1 addition & 0 deletions Tests/Approval.Tests/ApprovedApi/FluentAssertions/netcoreapp3.0.verified.txt
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Expand Up @@ -1816,6 +1816,7 @@ namespace FluentAssertions.Primitives
public FluentAssertions.AndConstraint<TAssertions> BeFalse(string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> BeTrue(string because = "", params object[] becauseArgs) { }
public override bool Equals(object obj) { }
public FluentAssertions.AndConstraint<TAssertions> Imply(bool consequent, string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> NotBe(bool unexpected, string because = "", params object[] becauseArgs) { }
}
public class DateTimeAssertions : FluentAssertions.Primitives.DateTimeAssertions<FluentAssertions.Primitives.DateTimeAssertions>
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1 change: 1 addition & 0 deletions Tests/Approval.Tests/ApprovedApi/FluentAssertions/netstandard2.0.verified.txt
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Expand Up @@ -1767,6 +1767,7 @@ namespace FluentAssertions.Primitives
public FluentAssertions.AndConstraint<TAssertions> BeFalse(string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> BeTrue(string because = "", params object[] becauseArgs) { }
public override bool Equals(object obj) { }
public FluentAssertions.AndConstraint<TAssertions> Imply(bool consequent, string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> NotBe(bool unexpected, string because = "", params object[] becauseArgs) { }
}
public class DateTimeAssertions : FluentAssertions.Primitives.DateTimeAssertions<FluentAssertions.Primitives.DateTimeAssertions>
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1 change: 1 addition & 0 deletions Tests/Approval.Tests/ApprovedApi/FluentAssertions/netstandard2.1.verified.txt
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Expand Up @@ -1816,6 +1816,7 @@ namespace FluentAssertions.Primitives
public FluentAssertions.AndConstraint<TAssertions> BeFalse(string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> BeTrue(string because = "", params object[] becauseArgs) { }
public override bool Equals(object obj) { }
public FluentAssertions.AndConstraint<TAssertions> Imply(bool consequent, string because = "", params object[] becauseArgs) { }
public FluentAssertions.AndConstraint<TAssertions> NotBe(bool unexpected, string because = "", params object[] becauseArgs) { }
}
public class DateTimeAssertions : FluentAssertions.Primitives.DateTimeAssertions<FluentAssertions.Primitives.DateTimeAssertions>
Expand Down