package assert

import (
	"errors"
	"testing"
	"time"
)

func TestImplementsWrapper(t *testing.T) {
	assert := New(new(testing.T))

	if !assert.Implements((*AssertionTesterInterface)(nil), new(AssertionTesterConformingObject)) {
		t.Error("Implements method should return true: AssertionTesterConformingObject implements AssertionTesterInterface")
	}
	if assert.Implements((*AssertionTesterInterface)(nil), new(AssertionTesterNonConformingObject)) {
		t.Error("Implements method should return false: AssertionTesterNonConformingObject does not implements AssertionTesterInterface")
	}
}

func TestIsTypeWrapper(t *testing.T) {
	assert := New(new(testing.T))

	if !assert.IsType(new(AssertionTesterConformingObject), new(AssertionTesterConformingObject)) {
		t.Error("IsType should return true: AssertionTesterConformingObject is the same type as AssertionTesterConformingObject")
	}
	if assert.IsType(new(AssertionTesterConformingObject), new(AssertionTesterNonConformingObject)) {
		t.Error("IsType should return false: AssertionTesterConformingObject is not the same type as AssertionTesterNonConformingObject")
	}

}

func TestEqualWrapper(t *testing.T) {
	assert := New(new(testing.T))

	if !assert.Equal("Hello World", "Hello World") {
		t.Error("Equal should return true")
	}
	if !assert.Equal(123, 123) {
		t.Error("Equal should return true")
	}
	if !assert.Equal(123.5, 123.5) {
		t.Error("Equal should return true")
	}
	if !assert.Equal([]byte("Hello World"), []byte("Hello World")) {
		t.Error("Equal should return true")
	}
	if !assert.Equal(nil, nil) {
		t.Error("Equal should return true")
	}
}

func TestNotNilWrapper(t *testing.T) {
	assert := New(new(testing.T))

	if !assert.NotNil(new(AssertionTesterConformingObject)) {
		t.Error("NotNil should return true: object is not nil")
	}
	if assert.NotNil(nil) {
		t.Error("NotNil should return false: object is nil")
	}

}

func TestNilWrapper(t *testing.T) {
	assert := New(new(testing.T))

	if !assert.Nil(nil) {
		t.Error("Nil should return true: object is nil")
	}
	if assert.Nil(new(AssertionTesterConformingObject)) {
		t.Error("Nil should return false: object is not nil")
	}

}

func TestTrueWrapper(t *testing.T) {
	assert := New(new(testing.T))

	if !assert.True(true) {
		t.Error("True should return true")
	}
	if assert.True(false) {
		t.Error("True should return false")
	}

}

func TestFalseWrapper(t *testing.T) {
	assert := New(new(testing.T))

	if !assert.False(false) {
		t.Error("False should return true")
	}
	if assert.False(true) {
		t.Error("False should return false")
	}

}

func TestExactlyWrapper(t *testing.T) {
	assert := New(new(testing.T))

	a := float32(1)
	b := float64(1)
	c := float32(1)
	d := float32(2)

	if assert.Exactly(a, b) {
		t.Error("Exactly should return false")
	}
	if assert.Exactly(a, d) {
		t.Error("Exactly should return false")
	}
	if !assert.Exactly(a, c) {
		t.Error("Exactly should return true")
	}

	if assert.Exactly(nil, a) {
		t.Error("Exactly should return false")
	}
	if assert.Exactly(a, nil) {
		t.Error("Exactly should return false")
	}

}

func TestNotEqualWrapper(t *testing.T) {

	assert := New(new(testing.T))

	if !assert.NotEqual("Hello World", "Hello World!") {
		t.Error("NotEqual should return true")
	}
	if !assert.NotEqual(123, 1234) {
		t.Error("NotEqual should return true")
	}
	if !assert.NotEqual(123.5, 123.55) {
		t.Error("NotEqual should return true")
	}
	if !assert.NotEqual([]byte("Hello World"), []byte("Hello World!")) {
		t.Error("NotEqual should return true")
	}
	if !assert.NotEqual(nil, new(AssertionTesterConformingObject)) {
		t.Error("NotEqual should return true")
	}
}

func TestContainsWrapper(t *testing.T) {

	assert := New(new(testing.T))

	if !assert.Contains("Hello World", "Hello") {
		t.Error("Contains should return true: \"Hello World\" contains \"Hello\"")
	}
	if assert.Contains("Hello World", "Salut") {
		t.Error("Contains should return false: \"Hello World\" does not contain \"Salut\"")
	}

}

func TestNotContainsWrapper(t *testing.T) {

	assert := New(new(testing.T))

	if !assert.NotContains("Hello World", "Hello!") {
		t.Error("NotContains should return true: \"Hello World\" does not contain \"Hello!\"")
	}
	if assert.NotContains("Hello World", "Hello") {
		t.Error("NotContains should return false: \"Hello World\" contains \"Hello\"")
	}

}

func TestDidPanicWrapper(t *testing.T) {

	if funcDidPanic, _ := didPanic(func() {
		panic("Panic!")
	}); !funcDidPanic {
		t.Error("didPanic should return true")
	}

	if funcDidPanic, _ := didPanic(func() {
	}); funcDidPanic {
		t.Error("didPanic should return false")
	}

}

func TestPanicsWrapper(t *testing.T) {

	assert := New(new(testing.T))

	if !assert.Panics(func() {
		panic("Panic!")
	}) {
		t.Error("Panics should return true")
	}

	if assert.Panics(func() {
	}) {
		t.Error("Panics should return false")
	}

}

func TestNotPanicsWrapper(t *testing.T) {

	assert := New(new(testing.T))

	if !assert.NotPanics(func() {
	}) {
		t.Error("NotPanics should return true")
	}

	if assert.NotPanics(func() {
		panic("Panic!")
	}) {
		t.Error("NotPanics should return false")
	}

}

func TestEqualWrapper_Funcs(t *testing.T) {

	assert := New(t)

	type f func() int
	var f1 f = func() int { return 1 }
	var f2 f = func() int { return 2 }

	var f1_copy f = f1

	assert.Equal(f1_copy, f1, "Funcs are the same and should be considered equal")
	assert.NotEqual(f1, f2, "f1 and f2 are different")

}

func TestNoErrorWrapper(t *testing.T) {
	assert := New(t)
	mockAssert := New(new(testing.T))

	// start with a nil error
	var err error = nil

	assert.True(mockAssert.NoError(err), "NoError should return True for nil arg")

	// now set an error
	err = errors.New("Some error")

	assert.False(mockAssert.NoError(err), "NoError with error should return False")

}

func TestErrorWrapper(t *testing.T) {
	assert := New(t)
	mockAssert := New(new(testing.T))

	// start with a nil error
	var err error = nil

	assert.False(mockAssert.Error(err), "Error should return False for nil arg")

	// now set an error
	err = errors.New("Some error")

	assert.True(mockAssert.Error(err), "Error with error should return True")

}

func TestEqualErrorWrapper(t *testing.T) {
	assert := New(t)
	mockAssert := New(new(testing.T))

	// start with a nil error
	var err error
	assert.False(mockAssert.EqualError(err, ""),
		"EqualError should return false for nil arg")

	// now set an error
	err = errors.New("some error")
	assert.False(mockAssert.EqualError(err, "Not some error"),
		"EqualError should return false for different error string")
	assert.True(mockAssert.EqualError(err, "some error"),
		"EqualError should return true")
}

func TestEmptyWrapper(t *testing.T) {
	assert := New(t)
	mockAssert := New(new(testing.T))

	assert.True(mockAssert.Empty(""), "Empty string is empty")
	assert.True(mockAssert.Empty(nil), "Nil is empty")
	assert.True(mockAssert.Empty([]string{}), "Empty string array is empty")
	assert.True(mockAssert.Empty(0), "Zero int value is empty")
	assert.True(mockAssert.Empty(false), "False value is empty")

	assert.False(mockAssert.Empty("something"), "Non Empty string is not empty")
	assert.False(mockAssert.Empty(errors.New("something")), "Non nil object is not empty")
	assert.False(mockAssert.Empty([]string{"something"}), "Non empty string array is not empty")
	assert.False(mockAssert.Empty(1), "Non-zero int value is not empty")
	assert.False(mockAssert.Empty(true), "True value is not empty")

}

func TestNotEmptyWrapper(t *testing.T) {
	assert := New(t)
	mockAssert := New(new(testing.T))

	assert.False(mockAssert.NotEmpty(""), "Empty string is empty")
	assert.False(mockAssert.NotEmpty(nil), "Nil is empty")
	assert.False(mockAssert.NotEmpty([]string{}), "Empty string array is empty")
	assert.False(mockAssert.NotEmpty(0), "Zero int value is empty")
	assert.False(mockAssert.NotEmpty(false), "False value is empty")

	assert.True(mockAssert.NotEmpty("something"), "Non Empty string is not empty")
	assert.True(mockAssert.NotEmpty(errors.New("something")), "Non nil object is not empty")
	assert.True(mockAssert.NotEmpty([]string{"something"}), "Non empty string array is not empty")
	assert.True(mockAssert.NotEmpty(1), "Non-zero int value is not empty")
	assert.True(mockAssert.NotEmpty(true), "True value is not empty")

}

func TestWithinDurationWrapper(t *testing.T) {
	assert := New(t)
	mockAssert := New(new(testing.T))
	a := time.Now()
	b := a.Add(10 * time.Second)

	assert.True(mockAssert.WithinDuration(a, b, 10*time.Second), "A 10s difference is within a 10s time difference")
	assert.True(mockAssert.WithinDuration(b, a, 10*time.Second), "A 10s difference is within a 10s time difference")

	assert.False(mockAssert.WithinDuration(a, b, 9*time.Second), "A 10s difference is not within a 9s time difference")
	assert.False(mockAssert.WithinDuration(b, a, 9*time.Second), "A 10s difference is not within a 9s time difference")

	assert.False(mockAssert.WithinDuration(a, b, -9*time.Second), "A 10s difference is not within a 9s time difference")
	assert.False(mockAssert.WithinDuration(b, a, -9*time.Second), "A 10s difference is not within a 9s time difference")

	assert.False(mockAssert.WithinDuration(a, b, -11*time.Second), "A 10s difference is not within a 9s time difference")
	assert.False(mockAssert.WithinDuration(b, a, -11*time.Second), "A 10s difference is not within a 9s time difference")
}