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errors_test.go
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errors_test.go
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package slate
import (
"errors"
"fmt"
"reflect"
"testing"
)
func Test_Error(t *testing.T) {
t.Run("newError", func(t *testing.T) {
t.Run("creation without context", func(t *testing.T) {
msg := "error message"
if e := NewError(msg); e.Error() != msg {
t.Errorf("error message (%v) not same as expected (%v)", e, msg)
} else {
var te *Error
if !errors.As(e, &te) {
t.Errorf("didn't returned a slate error instance")
}
}
})
t.Run("creation with context", func(t *testing.T) {
msg := "error message"
context := map[string]interface{}{"field": "value"}
if e := NewError(msg, context); e.Error() != msg {
t.Errorf("error message (%v) not same as expected (%v)", e, msg)
} else {
var te *Error
if !errors.As(e, &te) {
t.Errorf("didn't returned a slate error instance")
}
}
})
})
t.Run("newErrorFrom", func(t *testing.T) {
t.Run("creation without context", func(t *testing.T) {
from := fmt.Errorf("supplier error")
msg := "error message"
expected := "error message : supplier error"
if e := NewErrorFrom(from, msg); e.Error() != expected {
t.Errorf("error message (%v) not same as expected (%v)", e, expected)
} else if !errors.Is(e, from) {
t.Errorf("didn't returned a wrapped error from supplier (%v)", from)
} else {
var te *Error
if !errors.As(e, &te) {
t.Errorf("didn't returned a slate error instance")
}
}
})
t.Run("creation with context", func(t *testing.T) {
from := fmt.Errorf("supplier error")
msg := "error message"
context := map[string]interface{}{"field": "value"}
expected := "error message : supplier error"
if e := NewErrorFrom(from, msg, context); e.Error() != expected {
t.Errorf("error message (%v) not same as expected (%v)", e, expected)
} else if !errors.Is(e, from) {
t.Errorf("didn't returned a wrapped error from supplier (%v)", from)
} else {
var te *Error
if !errors.As(e, &te) {
t.Errorf("didn't returned a slate error instance")
}
}
})
})
t.Run("Error", func(t *testing.T) {
t.Run("retrieve error message from non-wrapped error", func(t *testing.T) {
msg := "error message"
if e := NewError(msg); e.Error() != msg {
t.Errorf("error message (%v) not same as expected (%v)", e, msg)
}
})
t.Run("retrieve error message from wrapped error", func(t *testing.T) {
from := fmt.Errorf("supplier error")
msg := "error message"
expected := "error message : supplier error"
if e := NewErrorFrom(from, msg); e.Error() != expected {
t.Errorf("error message (%v) not same as expected (%v)", e, expected)
}
})
})
t.Run("Unwarp", func(t *testing.T) {
t.Run("retrieve nil from non-wrapped error", func(t *testing.T) {
e := NewError("error message")
if check := errors.Unwrap(e); check != nil {
t.Errorf("returned the unexpeceted wrapped error : %v", check)
}
})
t.Run("retrieve error message from wrapped error", func(t *testing.T) {
from := fmt.Errorf("supplier error")
e := NewErrorFrom(from, "error message")
if check := errors.Unwrap(e); check == nil {
t.Errorf("didn't returned the expeceted wrapped error")
} else if check.Error() != from.Error() {
t.Errorf("error message from wrapped error (%v) not same as expected (%v)", check, from)
}
})
})
t.Run("Context", func(t *testing.T) {
t.Run("retrieve nil from no context error", func(t *testing.T) {
e := NewError("error message")
if check := e.(*Error).Context(); check != nil {
t.Errorf("returned the unexpeceted context : %v", check)
}
})
t.Run("retrieve assigned error context", func(t *testing.T) {
context := map[string]interface{}{"field": "value"}
e := NewError("error message", context)
if check := e.(*Error).Context(); check == nil {
t.Errorf("didn't returned the expeceted context reference")
} else if !reflect.DeepEqual(check, context) {
t.Errorf("returned (%v) context when expecting (%v)", check, context)
}
})
})
}
func Test_err(t *testing.T) {
t.Run("errNilPointer", func(t *testing.T) {
arg := "dummy argument"
context := map[string]interface{}{"field": "value"}
message := "dummy argument : invalid nil pointer"
t.Run("creation without context", func(t *testing.T) {
if e := errNilPointer(arg); !errors.Is(e, ErrNilPointer) {
t.Errorf("error not a instance of ErrNilPointer")
} else if e.Error() != message {
t.Errorf("error message (%v) not same as expected (%v)", e, message)
} else {
var te *Error
if !errors.As(e, &te) {
t.Errorf("didn't returned a slate error instance")
}
}
})
t.Run("creation with context", func(t *testing.T) {
if e := errNilPointer(arg, context); !errors.Is(e, ErrNilPointer) {
t.Errorf("error not a instance of ErrNilPointer")
} else if e.Error() != message {
t.Errorf("error message (%v) not same as expected (%v)", e, message)
} else {
var te *Error
if !errors.As(e, &te) {
t.Errorf("didn't returned a slate error instance")
}
}
})
})
t.Run("errConversion", func(t *testing.T) {
arg := "dummy value"
typ := "dummy type"
context := map[string]interface{}{"field": "value"}
message := "dummy value to dummy type : invalid type conversion"
t.Run("creation without context", func(t *testing.T) {
if e := errConversion(arg, typ); !errors.Is(e, ErrConversion) {
t.Errorf("error not a instance of ErrConversion")
} else if e.Error() != message {
t.Errorf("error message (%v) not same as expected (%v)", e, message)
} else {
var te *Error
if !errors.As(e, &te) {
t.Errorf("didn't returned a slate error instance")
}
}
})
t.Run("creation with context", func(t *testing.T) {
if e := errConversion(arg, typ, context); !errors.Is(e, ErrConversion) {
t.Errorf("error not a instance of ErrConversion")
} else if e.Error() != message {
t.Errorf("error message (%v) not same as expected (%v)", e, message)
} else {
var te *Error
if !errors.As(e, &te) {
t.Errorf("didn't returned a slate error instance")
}
}
})
})
}