Struct E2eConfig 

pub struct E2eConfig {

    pub fixtures: String,
    pub output: String,
    pub languages: Vec<String>,
    pub call: CallConfig,
    pub calls: HashMap<String, CallConfig>,
    pub packages: HashMap<String, PackageRef>,
    pub format: HashMap<String, String>,
    pub fields: HashMap<String, String>,
    pub fields_optional: HashSet<String>,
    pub fields_array: HashSet<String>,
    pub result_fields: HashSet<String>,
    pub fields_c_types: HashMap<String, String>,
    pub fields_enum: HashSet<String>,
}

Root e2e configuration from [e2e] section of alef.toml.

Fields

fixtures: String

Directory containing fixture JSON files (default: “fixtures”).

output: String

Output directory for generated e2e test projects (default: “e2e”).

languages: Vec<String>

Languages to generate e2e tests for. Defaults to top-level languages list.

call: CallConfig

Default function call configuration.

calls: HashMap<String, CallConfig>

Named additional call configurations for multi-function testing. Fixtures reference these via the call field, e.g. "call": "embed".

packages: HashMap<String, PackageRef>

Per-language package reference overrides.

format: HashMap<String, String>

Per-language formatter commands.

fields: HashMap<String, String>

Field path aliases: maps fixture field paths to actual API struct paths. E.g., “metadata.title” -> “metadata.document.title” Supports struct access (foo.bar), map access (foo[key]), direct fields.

fields_optional: HashSet<String>

Fields that are Optional/nullable in the return type. Rust generators use .as_deref().unwrap_or(“”) for strings, .is_some() for structs.

fields_array: HashSet<String>

Fields that are arrays/Vecs on the result type. When a fixture path like json_ld.name traverses an array field, the accessor adds [0] (or language equivalent) to index into the first element.

result_fields: HashSet<String>

Known top-level fields on the result type.

When non-empty, assertions whose resolved field path starts with a segment that is NOT in this set are emitted as comments (skipped) instead of executable assertions. This prevents broken assertions when fixtures reference fields from a different operation (e.g., batch.completed_count on a ScrapeResult).

fields_c_types: HashMap<String, String>

C FFI accessor type chain: maps "{parent_snake_type}.{field}" to the PascalCase return type name (without prefix).

Used by the C e2e generator to emit chained FFI accessor calls for nested field paths. The root type is always conversion_result.

Example:

[e2e.fields_c_types]
"conversion_result.metadata" = "HtmlMetadata"
"html_metadata.document" = "DocumentMetadata"

fields_enum: HashSet<String>

Fields whose resolved type is an enum in the generated bindings.

When a contains / contains_all / etc. assertion targets one of these fields, language generators that cannot call .contains() directly on an enum (e.g., Java) will emit a string-conversion call first. For Java, the generated assertion calls .getValue() on the enum — the @JsonValue method that all alef-generated Java enums expose — to obtain the lowercase serde string before performing the string comparison.

Both the raw fixture field path (before alias resolution) and the resolved path (after alias resolution via [e2e.fields]) are accepted, so you can use either form:

# Raw fixture field:
fields_enum = ["links[].link_type", "assets[].category"]
# …or the resolved (aliased) field name:
fields_enum = ["links[].link_type", "assets[].asset_category"]

Implementations

impl E2eConfig

pub fn resolve_call(&self, call_name: Option<&str>) -> &CallConfig

Resolve the call config for a fixture. Uses the named call if specified, otherwise falls back to the default [e2e.call].

Trait Implementations

impl Clone for E2eConfig

fn clone(&self) -> E2eConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for E2eConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for E2eConfig

fn default() -> E2eConfig

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for E2eConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for E2eConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.