vtest

package

v0.2.1 Latest Latest Go to latest Published: May 14, 2026 License: MIT Imports: 16 Imported by: 0

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

github.com/vango-go/vango

Links

Open Source Insights

Documentation ¶

Overview ¶

Package vtest provides a deterministic, server-side harness for testing Vango components without a browser.

The harness mounts Setup components, renders HTML, allows data-testid queries, simulates events, and provides async coordination for Resources and Actions.

Index ¶

func TestID(id string) vdom.Attr
type Config
type Harness
- func New(t testing.TB, opts ...Option) *Harness
type Mounted
- func Mount[P any](h *Harness, component func(P) vango.Component, props P) *Mounted
type Option

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func TestID ¶

func TestID(id string) vdom.Attr

TestID creates a data-testid attribute for querying elements in tests.

Types ¶

type Config ¶

type Config struct {
	PrettyHTML      bool
	SnapshotDir     string
	UpdateSnapshots bool
	DebugMode       bool
	AwaitMaxSteps   int
}

Config holds harness configuration options.

type Harness ¶

type Harness struct {
	// contains filtered or unexported fields
}

Harness manages test sessions and component mounting.

func New ¶

func New(t testing.TB, opts ...Option) *Harness

New creates a new test harness for the given test.

func (*Harness) AssertActionState ¶

func (h *Harness) AssertActionState(m *Mounted, nameOrID string, want vango.ActionState)

AssertActionState asserts that an Action is in the expected state.

func (*Harness) AssertExistsByTestID ¶

func (h *Harness) AssertExistsByTestID(m *Mounted, testid string)

AssertExistsByTestID asserts that an element with the given data-testid exists.

func (*Harness) AssertNotExistsByTestID ¶

func (h *Harness) AssertNotExistsByTestID(m *Mounted, testid string)

AssertNotExistsByTestID asserts that no element with the given data-testid exists.

func (*Harness) AssertSignal ¶

func (h *Harness) AssertSignal(m *Mounted, nameOrID string, want any)

AssertSignal asserts that a signal has the expected value.

func (*Harness) AssertSnapshot ¶

func (h *Harness) AssertSnapshot(m *Mounted, name string)

AssertSnapshot compares the rendered HTML against a stored snapshot.

func (*Harness) AssertTextByTestID ¶

func (h *Harness) AssertTextByTestID(m *Mounted, testid string, want string)

AssertTextByTestID asserts that the element with the given data-testid has the expected text content.

func (*Harness) AwaitAction ¶

func (h *Harness) AwaitAction(m *Mounted, nameOrID string)

AwaitAction waits for an Action to reach Success or Error.

func (*Harness) AwaitResource ¶

func (h *Harness) AwaitResource(m *Mounted, nameOrID string)

AwaitResource waits for a Resource to reach Ready or Error.

func (*Harness) ClickByTestID ¶

func (h *Harness) ClickByTestID(m *Mounted, testid string)

ClickByTestID simulates a click event on the element with the given data-testid.

func (*Harness) EmitEventByHID ¶

func (h *Harness) EmitEventByHID(m *Mounted, hid, eventType string, payload map[string]any)

EmitEventByHID simulates an event on the element with the given HID.

func (*Harness) EmitEventByTestID ¶

func (h *Harness) EmitEventByTestID(m *Mounted, testid, eventType string, payload map[string]any)

EmitEventByTestID simulates an event on the element with the given data-testid.

func (*Harness) ExistsByTestID ¶

func (h *Harness) ExistsByTestID(m *Mounted, testid string) bool

ExistsByTestID returns true if an element with the given data-testid exists.

func (*Harness) Flush ¶ added in v0.2.0

func (h *Harness) Flush(m *Mounted)

Flush drains pending dispatch/effect work and rerenders dirty components.

func (*Harness) HTML ¶

func (h *Harness) HTML(m *Mounted) string

HTML returns the current rendered HTML of the mounted component.

func (*Harness) InputByTestID ¶

func (h *Harness) InputByTestID(m *Mounted, testid string, value string)

InputByTestID simulates an input event with the given value.

func (*Harness) Mount ¶

func (h *Harness) Mount(component vango.Component) *Mounted

Mount mounts a component for testing.

func (*Harness) SignalValue ¶

func (h *Harness) SignalValue(m *Mounted, nameOrID string) any

SignalValue returns the current value of a signal by debugName, stableID, or anchorKey.

func (*Harness) SubmitByTestID ¶

func (h *Harness) SubmitByTestID(m *Mounted, testid string)

SubmitByTestID simulates a form submission on the element with the given data-testid.

func (*Harness) TextByTestID ¶

func (h *Harness) TextByTestID(m *Mounted, testid string) string

TextByTestID returns the text content of the element with the given data-testid.

type Mounted ¶

type Mounted struct {
	// contains filtered or unexported fields
}

Mounted represents a mounted component tree ready for testing.

func Mount ¶

func Mount[P any](h *Harness, component func(P) vango.Component, props P) *Mounted

Mount mounts a typed component factory with props, preserving type safety.

type Option ¶

type Option interface {
	// contains filtered or unexported methods
}

Option configures the test harness.

func WithAwaitMaxSteps ¶

func WithAwaitMaxSteps(steps int) Option

WithAwaitMaxSteps sets the maximum steps for deterministic awaits.

func WithDebugMode ¶

func WithDebugMode(enabled bool) Option

WithDebugMode toggles vango.DebugMode for the harness lifetime.

func WithPrettyHTML ¶

func WithPrettyHTML() Option

WithPrettyHTML enables indented HTML output.

func WithSnapshotDir ¶

func WithSnapshotDir(dir string) Option

WithSnapshotDir sets a custom snapshot directory.

func WithUpdateSnapshots ¶

func WithUpdateSnapshots() Option

WithUpdateSnapshots enables snapshot update mode.

Source Files ¶

View all Source files

Directories ¶

Path	Synopsis
internal
htmlparser
mock

?	: This menu
/	: Search site
f or F	: Jump to
y or Y	: Canonical URL