preparing for v0.5

src/error/error_test.go

@@ -0,0 +1,66 @@
+package error
+
+import (
+	"testing"
+)
+
+func AssertEq(t *testing.T, got, want string) {
+	t.Helper()
+	if got != want {
+		t.Errorf("expected %q, got %q", want, got)
+	}
+}
+
+func TestErrorSimple(t *testing.T) {
+	ne := new("foo bar")
+	AssertEq(t, ne.Error(), "foo bar")
+	ne.Subject("baz")
+	AssertEq(t, ne.Error(), "baz: foo bar")
+}
+
+func TestErrorSubjectOnly(t *testing.T) {
+	ne := new().Subject("bar")
+	AssertEq(t, ne.Error(), "bar")
+}
+
+func TestErrorExtra(t *testing.T) {
+	ne := new("foo").Extra("bar").Extra("baz")
+	AssertEq(t, ne.Error(), "foo:\n  - bar\n  - baz\n")
+}
+
+func TestErrorNested(t *testing.T) {
+	inner := new("inner").
+		Extra("123").
+		Extra("456")
+	inner2 := new("inner").
+		Subject("2").
+		Extra("456").
+		Extra("789")
+	inner3 := new("inner").
+		Subject("3").
+		Extra("456").
+		Extra("789")
+	ne := new("foo").
+		Extra("bar").
+		Extra("baz").
+		ExtraError(inner).
+		With(inner.With(inner2.With(inner3)))
+	want :=
+		`foo:
+  - bar
+  - baz
+  - inner:
+    - 123
+    - 456
+  - inner:
+    - 123
+    - 456
+    - 2: inner:
+      - 456
+      - 789
+      - 3: inner:
+        - 456
+        - 789
+`
+	AssertEq(t, ne.Error(), want)
+}