errors - errors_test.go

     1  package errors
     2  
     3  import "testing"
     4  
     5  func TestErrors(t *testing.T) {
     6  	const (
     7  		A Error = "A"
     8  		B Error = "B"
     9  	)
    10  	var err error = A
    11  	if err != A {
    12  		t.Errorf("expecting err to match A")
    13  	}
    14  	if err == B {
    15  		t.Errorf("not expecting err to match B")
    16  	}
    17  	if err.Error() != "A" {
    18  		t.Errorf("expecting error string \"A\" got %q", err.Error())
    19  	}
    20  	err = B
    21  	if err == A {
    22  		t.Errorf("not expecting err to match A")
    23  	}
    24  	if err != B {
    25  		t.Errorf("expecting err to match B")
    26  	}
    27  	if err.Error() != "B" {
    28  		t.Errorf("expecting error string \"B\" got %q", err.Error())
    29  	}
    30  	if c := WithContext("CONTEXT", A); Unwrap(c) != A {
    31  		t.Errorf("expecting error %q, got %q", A, c)
    32  	}
    33  }
    34  
    35  func TestItobs(t *testing.T) {
    36  	tests := []struct {
    37  		Input  int
    38  		Output []byte
    39  	}{
    40  		{0, []byte{'0'}},
    41  		{1, []byte{'1'}},
    42  		{2, []byte{'2'}},
    43  		{10, []byte{'1', '0'}},
    44  		{11, []byte{'1', '1'}},
    45  		{32, []byte{'3', '2'}},
    46  		{100, []byte{'1', '0', '0'}},
    47  		{-1, []byte{'-', '1'}},
    48  		{-2, []byte{'-', '2'}},
    49  		{-10, []byte{'-', '1', '0'}},
    50  		{-100, []byte{'-', '1', '0', '0'}},
    51  	}
    52  	for n, test := range tests {
    53  		o := itobs(test.Input)
    54  		if string(o) != string(test.Output) {
    55  			t.Errorf("test %d: expecting %s, got %s", n+1, test.Output, o)
    56  		}
    57  	}
    58  }