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https://github.com/duke-git/lancet.git
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a43bc554ee
Add new function, Xnor, designed to create a composed predicate representing the logical Exclusive NOR (XNOR) operation applied to a list of predicates. The XNOR operation is a logical operation that returns true only if all operands have the same boolean value
117 lines
2.7 KiB
Go
117 lines
2.7 KiB
Go
package function
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import (
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"strings"
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"testing"
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"github.com/duke-git/lancet/v2/internal"
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)
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func TestPredicatesNegatePure(t *testing.T) {
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t.Parallel()
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assert := internal.NewAssert(t, "TestPredicatesNegatePure")
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// Define some simple predicates for demonstration
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isUpperCase := func(s string) bool {
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return strings.ToUpper(s) == s
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}
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isLowerCase := func(s string) bool {
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return strings.ToLower(s) == s
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}
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isMixedCase := Negate(Or(isUpperCase, isLowerCase))
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assert.ShouldBeFalse(isMixedCase("ABC"))
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assert.ShouldBeTrue(isMixedCase("AbC"))
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}
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func TestPredicatesOrPure(t *testing.T) {
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t.Parallel()
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assert := internal.NewAssert(t, "TestPredicatesOrPure")
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containsDigitOrSpecialChar := Or(
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func(s string) bool { return strings.ContainsAny(s, "0123456789") },
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func(s string) bool { return strings.ContainsAny(s, "!@#$%") },
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)
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assert.ShouldBeTrue(containsDigitOrSpecialChar("hello!"))
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assert.ShouldBeFalse(containsDigitOrSpecialChar("hello"))
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}
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func TestPredicatesAndPure(t *testing.T) {
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t.Parallel()
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assert := internal.NewAssert(t, "TestPredicatesAndPure")
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isNumericAndLength5 := And(
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func(s string) bool { return strings.ContainsAny(s, "0123456789") },
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func(s string) bool { return len(s) == 5 },
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)
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assert.ShouldBeTrue(isNumericAndLength5("12345"))
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assert.ShouldBeFalse(isNumericAndLength5("1234"))
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assert.ShouldBeFalse(isNumericAndLength5("abcde"))
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}
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func TestPredicatesNorPure(t *testing.T) {
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t.Parallel()
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assert := internal.NewAssert(t, "TestPredicatesNorPure")
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match := Nor(
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func(s string) bool { return strings.ContainsAny(s, "0123456789") },
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func(s string) bool { return len(s) == 5 },
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)
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assert.ShouldBeTrue(match("dbcdckkeee"))
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match = Nor(
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func(s string) bool { return strings.ContainsAny(s, "0123456789") },
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func(s string) bool { return len(s) == 5 },
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)
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assert.ShouldBeFalse(match("0123456789"))
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}
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func TestPredicatesXnorPure(t *testing.T) {
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t.Parallel()
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assert := internal.NewAssert(t, "TestPredicatesXnorPure")
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isEven := func(i int) bool { return i%2 == 0 }
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isPositive := func(i int) bool { return i > 0 }
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match := Xnor(isEven, isPositive)
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assert.ShouldBeTrue(match(2))
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assert.ShouldBeTrue(match(-3))
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assert.ShouldBeFalse(match(3))
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}
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func TestPredicatesMix(t *testing.T) {
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t.Parallel()
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assert := internal.NewAssert(t, "TestPredicatesMix")
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a := Or(
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func(s string) bool { return strings.ContainsAny(s, "0123456789") },
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func(s string) bool { return strings.ContainsAny(s, "!") },
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)
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b := And(
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func(s string) bool { return strings.ContainsAny(s, "hello") },
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func(s string) bool { return strings.ContainsAny(s, "!") },
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)
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c := Negate(And(a, b))
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assert.ShouldBeFalse(c("hello!"))
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c = Nor(a, b)
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assert.ShouldBeFalse(c("hello!"))
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c = Xnor(a, b)
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assert.ShouldBeTrue(c("hello!"))
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}
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