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|
package messagediff
import (
"testing"
"time"
"github.com/d4l3k/messagediff/testdata"
)
type testStruct struct {
A, b int
C []int
D [3]int
}
type RecursiveStruct struct {
Key int
Child *RecursiveStruct
}
func newRecursiveStruct(key int) *RecursiveStruct {
a := &RecursiveStruct{
Key: key,
}
b := &RecursiveStruct{
Key: key,
Child: a,
}
a.Child = b
return a
}
type testCase struct {
a, b interface{}
diff string
equal bool
}
func checkTestCases(t *testing.T, testData []testCase) {
for i, td := range testData {
diff, equal := PrettyDiff(td.a, td.b)
if diff != td.diff {
t.Errorf("%d. PrettyDiff(%#v, %#v) diff = %#v; not %#v", i, td.a, td.b, diff, td.diff)
}
if equal != td.equal {
t.Errorf("%d. PrettyDiff(%#v, %#v) equal = %#v; not %#v", i, td.a, td.b, equal, td.equal)
}
}
}
func TestPrettyDiff(t *testing.T) {
testData := []testCase{
{
true,
false,
"modified: = false\n",
false,
},
{
true,
0,
"modified: = 0\n",
false,
},
{
[]int{0, 1, 2},
[]int{0, 1, 2, 3},
"added: [3] = 3\n",
false,
},
{
[]int{0, 1, 2, 3},
[]int{0, 1, 2},
"removed: [3] = 3\n",
false,
},
{
[]int{0},
[]int{1},
"modified: [0] = 1\n",
false,
},
{
&[]int{0},
&[]int{1},
"modified: [0] = 1\n",
false,
},
{
map[string]int{"a": 1, "b": 2},
map[string]int{"b": 4, "c": 3},
"added: [\"c\"] = 3\nmodified: [\"b\"] = 4\nremoved: [\"a\"] = 1\n",
false,
},
{
testStruct{1, 2, []int{1}, [3]int{4, 5, 6}},
testStruct{1, 3, []int{1, 2}, [3]int{4, 5, 6}},
"added: .C[1] = 2\nmodified: .b = 3\n",
false,
},
{
nil,
nil,
"",
true,
},
{
&struct{}{},
nil,
"modified: = <nil>\n",
false,
},
{
nil,
&struct{}{},
"modified: = &struct {}{}\n",
false,
},
{
time.Time{},
time.Time{},
"",
true,
},
{
testdata.MakeTest(10, "duck"),
testdata.MakeTest(20, "foo"),
"modified: .a = 20\nmodified: .b = \"foo\"\n",
false,
},
}
checkTestCases(t, testData)
}
func TestPrettyDiffRecursive(t *testing.T) {
testData := []testCase{
{
newRecursiveStruct(1),
newRecursiveStruct(1),
"",
true,
},
{
newRecursiveStruct(1),
newRecursiveStruct(2),
"modified: .Child.Key = 2\nmodified: .Key = 2\n",
false,
},
}
checkTestCases(t, testData)
}
func TestPathString(t *testing.T) {
testData := []struct {
in Path
want string
}{{
Path{StructField("test"), SliceIndex(1), MapKey{"blue"}, MapKey{12.3}},
".test[1][\"blue\"][12.3]",
}}
for i, td := range testData {
if out := td.in.String(); out != td.want {
t.Errorf("%d. %#v.String() = %#v; not %#v", i, td.in, out, td.want)
}
}
}
type ignoreStruct struct {
A int `testdiff:"ignore"`
a int
B [3]int `testdiff:"ignore"`
b [3]int
}
func TestIgnoreTag(t *testing.T) {
s1 := ignoreStruct{1, 1, [3]int{1, 2, 3}, [3]int{4, 5, 6}}
s2 := ignoreStruct{2, 1, [3]int{1, 8, 3}, [3]int{4, 5, 6}}
diff, equal := PrettyDiff(s1, s2)
if !equal {
t.Errorf("Expected structs to be equal. Diff:\n%s", diff)
}
s2 = ignoreStruct{2, 2, [3]int{1, 8, 3}, [3]int{4, 9, 6}}
diff, equal = PrettyDiff(s1, s2)
if equal {
t.Errorf("Expected structs NOT to be equal.")
}
expect := "modified: .a = 2\nmodified: .b[1] = 9\n"
if diff != expect {
t.Errorf("Expected diff to be:\n%v\nbut got:\n%v", expect, diff)
}
}
|
