// Copyright 2015 go-swagger maintainers
//
// 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 validate

import (
	"path/filepath"
	"testing"

	"github.com/go-openapi/analysis"
	"github.com/go-openapi/loads"
	"github.com/go-openapi/spec"
	"github.com/go-openapi/strfmt"
	"github.com/stretchr/testify/assert"
)

func TestExample_ValidateExamples(t *testing.T) {
	doc, _ := loads.Analyzed(PetStoreJSONMessage, "")
	validator := NewSpecValidator(spec.MustLoadSwagger20Schema(), strfmt.Default)
	validator.spec = doc
	validator.analyzer = analysis.New(doc.Spec())
	myDefaultValidator := &defaultValidator{SpecValidator: validator}
	res := myDefaultValidator.Validate()
	assert.Empty(t, res.Errors)

	tests := []string{
		// - $ref in response
		"response",
		"response-ref",
		"parameter",
		"parameter-required",
		"parameter-ref",
		"parameter-items",
		"header",
		"header-items",
		"schema",
		"schema-ref",
		"schema-additionalProperties",
		"schema-patternProperties",
		"schema-items",
		"schema-allOf",
		"parameter-schema",
		"default-response",
		"header-response",
		"header-items-default-response",
		"header-items-response",
		"header-pattern",
		"header-badpattern",
		"schema-items-allOf",
	}

	for _, tt := range tests {
		path := filepath.Join("fixtures", "validation", "example", "valid-example-"+tt+".json")
		if DebugTest {
			t.Logf("Testing valid example values for: %s", path)
		}

		validator := makeSpecValidator(t, path)
		myExampleValidator := &exampleValidator{SpecValidator: validator}
		res := myExampleValidator.Validate()
		assert.Empty(t, res.Errors, tt+" should not have errors")
		/*
			// Special case: warning only
			if tt == "parameter-required" {
				assert.Contains(t, verifiedTestWarnings(res), "limit in query has an example value and is required as parameter")
			}
		*/
		debugTest(t, path, res)

		path = filepath.Join("fixtures", "validation", "example", "invalid-example-"+tt+".json")

		if DebugTest {
			t.Logf("Testing invalid example values for: %s", path)
		}

		validator = makeSpecValidator(t, path)
		myExampleValidator = &exampleValidator{SpecValidator: validator}
		res = myExampleValidator.Validate()
		switch tt {
		case "header-badpattern":
			// This fixture exhibits real errors besides example values
			assert.NotEmpty(t, res.Errors, tt+" should have errors")
			assert.NotEmpty(t, res.Warnings, tt+" should have warnings")
		default:
			assert.Empty(t, res.Errors, tt+" should not have errors")
			assert.NotEmpty(t, res.Warnings, tt+" should have warnings")
		}
		// Update: now we have an additional message to explain it's all about a default value
		// Example:
		// - default value for limit in query does not validate its Schema
		// - limit in query must be of type integer: "string"]
		assert.True(t, len(res.Warnings) >= 1, tt+" should have at least 1 warning")

		debugTest(t, path, res)
		if DebugTest && t.Failed() {
			t.FailNow()
		}
	}
}

func TestExample_EdgeCase(t *testing.T) {
	// Testing guards
	var myExampleValidator *exampleValidator
	res := myExampleValidator.Validate()
	assert.True(t, res.IsValid())

	myExampleValidator = &exampleValidator{}
	res = myExampleValidator.Validate()
	assert.True(t, res.IsValid())
}