81 lines
2.7 KiB
Go
81 lines
2.7 KiB
Go
package assert
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import (
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"fmt"
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"reflect"
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)
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// isOrdered checks that collection contains orderable elements.
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func isOrdered(t TestingT, object interface{}, allowedComparesResults []CompareType, failMessage string, msgAndArgs ...interface{}) bool {
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objKind := reflect.TypeOf(object).Kind()
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if objKind != reflect.Slice && objKind != reflect.Array {
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return false
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}
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objValue := reflect.ValueOf(object)
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objLen := objValue.Len()
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if objLen <= 1 {
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return true
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}
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value := objValue.Index(0)
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valueInterface := value.Interface()
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firstValueKind := value.Kind()
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for i := 1; i < objLen; i++ {
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prevValue := value
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prevValueInterface := valueInterface
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value = objValue.Index(i)
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valueInterface = value.Interface()
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compareResult, isComparable := compare(prevValueInterface, valueInterface, firstValueKind)
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if !isComparable {
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return Fail(t, fmt.Sprintf("Can not compare type \"%s\" and \"%s\"", reflect.TypeOf(value), reflect.TypeOf(prevValue)), msgAndArgs...)
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}
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if !containsValue(allowedComparesResults, compareResult) {
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return Fail(t, fmt.Sprintf(failMessage, prevValue, value), msgAndArgs...)
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}
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}
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return true
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}
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// IsIncreasing asserts that the collection is increasing
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//
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// assert.IsIncreasing(t, []int{1, 2, 3})
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// assert.IsIncreasing(t, []float{1, 2})
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// assert.IsIncreasing(t, []string{"a", "b"})
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func IsIncreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
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return isOrdered(t, object, []CompareType{compareLess}, "\"%v\" is not less than \"%v\"", msgAndArgs)
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}
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// IsNonIncreasing asserts that the collection is not increasing
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//
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// assert.IsNonIncreasing(t, []int{2, 1, 1})
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// assert.IsNonIncreasing(t, []float{2, 1})
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// assert.IsNonIncreasing(t, []string{"b", "a"})
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func IsNonIncreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
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return isOrdered(t, object, []CompareType{compareEqual, compareGreater}, "\"%v\" is not greater than or equal to \"%v\"", msgAndArgs)
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}
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// IsDecreasing asserts that the collection is decreasing
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//
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// assert.IsDecreasing(t, []int{2, 1, 0})
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// assert.IsDecreasing(t, []float{2, 1})
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// assert.IsDecreasing(t, []string{"b", "a"})
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func IsDecreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
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return isOrdered(t, object, []CompareType{compareGreater}, "\"%v\" is not greater than \"%v\"", msgAndArgs)
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}
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// IsNonDecreasing asserts that the collection is not decreasing
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//
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// assert.IsNonDecreasing(t, []int{1, 1, 2})
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// assert.IsNonDecreasing(t, []float{1, 2})
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// assert.IsNonDecreasing(t, []string{"a", "b"})
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func IsNonDecreasing(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
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return isOrdered(t, object, []CompareType{compareLess, compareEqual}, "\"%v\" is not less than or equal to \"%v\"", msgAndArgs)
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}
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