package ezdb

import (
	"fmt"
	"testing"
)

func TestMemory(t *testing.T) {
	type Student struct {
		Name string `json:"name"`
		Age  int    `json:"age"`
	}

	collection := Memory[*Student](nil)

	cmp := func(expected, actual *Student) error {
		if expected == nil && actual != nil {
			return fmt.Errorf("expected no student (got %v)", actual)
		} else if expected != nil && actual == nil {
			return fmt.Errorf("expected student %v (got nil)", expected)
		}
		if actual.Name != expected.Name {
			return fmt.Errorf("student has wrong name (expected '%s', got '%s')", expected.Name, actual.Name)
		} else if actual.Age != expected.Age {
			return fmt.Errorf("student has wrong age (expected '%d', got '%d')", expected.Age, actual.Age)
		}
		return nil
	}

	tester := &CollectionTester[*Student]{
		C: collection,

		Cmp: cmp,
		Data: map[string]*Student{
			"annie": {Name: "Annie", Age: 32},
			"ben":   {Name: "Ben", Age: 50},
			"clive": {Name: "Clive", Age: 21},
		},
	}

	named := func(name string, do func() error) func() {
		return func() {
			if err := do(); err != nil {
				t.Errorf("failed test %q: %v", name, err)
			} else {
				t.Logf("passed test %q", name)
			}
		}
	}

	sequence := []func(){
		named("init 1", tester.Init),
		named("has", tester.Has),
		named("get", tester.Get),
		named("getAll", tester.GetAll),
		named("deleteOne 1", tester.DeleteOne),
		named("deleteOne 2", tester.DeleteOne),
		named("init 2", tester.Init),
		named("iterCount", tester.IterCount),
		named("iterSortKeys", tester.IterSortKeys),
		named("deleteAll", tester.DeleteAll),
		named("close", tester.Close),
	}
	for _, do := range sequence {
		do()
	}
}