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// Copyright 2012 Aaron Jacobs. All Rights Reserved.
// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package oglematchers_test
import (
. "github.com/jacobsa/oglematchers"
. "github.com/jacobsa/ogletest"
)
////////////////////////////////////////////////////////////////////////
// Helpers
////////////////////////////////////////////////////////////////////////
type ElementsAreTest struct {
}
func init() { RegisterTestSuite(&ElementsAreTest{}) }
////////////////////////////////////////////////////////////////////////
// Tests
////////////////////////////////////////////////////////////////////////
func (t *ElementsAreTest) EmptySet() {
m := ElementsAre()
ExpectEq("elements are: []", m.Description())
var c []interface{}
var err error
// No candidates.
c = []interface{}{}
err = m.Matches(c)
ExpectEq(nil, err)
// One candidate.
c = []interface{}{17}
err = m.Matches(c)
ExpectThat(err, Error(HasSubstr("length 1")))
}
func (t *ElementsAreTest) OneMatcher() {
m := ElementsAre(LessThan(17))
ExpectEq("elements are: [less than 17]", m.Description())
var c []interface{}
var err error
// No candidates.
c = []interface{}{}
err = m.Matches(c)
ExpectThat(err, Error(HasSubstr("length 0")))
// Matching candidate.
c = []interface{}{16}
err = m.Matches(c)
ExpectEq(nil, err)
// Non-matching candidate.
c = []interface{}{19}
err = m.Matches(c)
ExpectNe(nil, err)
// Two candidates.
c = []interface{}{17, 19}
err = m.Matches(c)
ExpectThat(err, Error(HasSubstr("length 2")))
}
func (t *ElementsAreTest) OneValue() {
m := ElementsAre(17)
ExpectEq("elements are: [17]", m.Description())
var c []interface{}
var err error
// No candidates.
c = []interface{}{}
err = m.Matches(c)
ExpectThat(err, Error(HasSubstr("length 0")))
// Matching int.
c = []interface{}{int(17)}
err = m.Matches(c)
ExpectEq(nil, err)
// Matching float.
c = []interface{}{float32(17)}
err = m.Matches(c)
ExpectEq(nil, err)
// Non-matching candidate.
c = []interface{}{19}
err = m.Matches(c)
ExpectNe(nil, err)
// Two candidates.
c = []interface{}{17, 19}
err = m.Matches(c)
ExpectThat(err, Error(HasSubstr("length 2")))
}
func (t *ElementsAreTest) MultipleElements() {
m := ElementsAre("taco", LessThan(17))
ExpectEq("elements are: [taco, less than 17]", m.Description())
var c []interface{}
var err error
// One candidate.
c = []interface{}{17}
err = m.Matches(c)
ExpectThat(err, Error(HasSubstr("length 1")))
// Both matching.
c = []interface{}{"taco", 16}
err = m.Matches(c)
ExpectEq(nil, err)
// First non-matching.
c = []interface{}{"burrito", 16}
err = m.Matches(c)
ExpectThat(err, Error(Equals("whose element 0 doesn't match")))
// Second non-matching.
c = []interface{}{"taco", 17}
err = m.Matches(c)
ExpectThat(err, Error(Equals("whose element 1 doesn't match")))
// Three candidates.
c = []interface{}{"taco", 17, 19}
err = m.Matches(c)
ExpectThat(err, Error(HasSubstr("length 3")))
}
func (t *ElementsAreTest) ArrayCandidates() {
m := ElementsAre("taco", LessThan(17))
var err error
// One candidate.
err = m.Matches([1]interface{}{"taco"})
ExpectThat(err, Error(HasSubstr("length 1")))
// Both matching.
err = m.Matches([2]interface{}{"taco", 16})
ExpectEq(nil, err)
// First non-matching.
err = m.Matches([2]interface{}{"burrito", 16})
ExpectThat(err, Error(Equals("whose element 0 doesn't match")))
}
func (t *ElementsAreTest) WrongTypeCandidate() {
m := ElementsAre("taco")
var err error
// String candidate.
err = m.Matches("taco")
ExpectTrue(isFatal(err))
ExpectThat(err, Error(HasSubstr("array")))
ExpectThat(err, Error(HasSubstr("slice")))
// Map candidate.
err = m.Matches(map[string]string{})
ExpectTrue(isFatal(err))
ExpectThat(err, Error(HasSubstr("array")))
ExpectThat(err, Error(HasSubstr("slice")))
// Nil candidate.
err = m.Matches(nil)
ExpectTrue(isFatal(err))
ExpectThat(err, Error(HasSubstr("array")))
ExpectThat(err, Error(HasSubstr("slice")))
}
func (t *ElementsAreTest) PropagatesFatality() {
m := ElementsAre(LessThan(17))
ExpectEq("elements are: [less than 17]", m.Description())
var c []interface{}
var err error
// Non-fatal error.
c = []interface{}{19}
err = m.Matches(c)
AssertNe(nil, err)
ExpectFalse(isFatal(err))
// Fatal error.
c = []interface{}{"taco"}
err = m.Matches(c)
AssertNe(nil, err)
ExpectTrue(isFatal(err))
}
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