rulemorph 0.3.3

YAML-based declarative data transformation engine for CSV/JSON to JSON
Documentation 
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use std::fs;

mod common;

use common::trace::{
    assert_trace_shape, assert_traced_output_matches_normal, attr_bool, attr_number,
    iter_trace_events, parse_rule, transform_text_raw_trace, unique_temp_dir,
};
use rulemorph::{
    InputData, NormalizationOptions, TraceAttributeValue, TraceEventKind, TransformErrorKind,
    TransformTraceOptions, parse_rule_file, transform, transform_input_with_trace,
    transform_input_with_trace_with_base_dir_and_options, transform_record,
    transform_record_with_trace, transform_with_base_dir,
};
use serde_json::json;

#[test]
fn trace_v2_eager_operator_emits_arg_eval_for_actual_args() {
    let yaml = r#"
version: 2
input:
  format: json
mappings:
  - target: "label"
    expr:
      - "@input.first"
      - concat: ["@input.second"]
"#;
    let rule = parse_rule(yaml);
    let traced = transform_text_raw_trace(&rule, r#"[{"first":"A","second":"B"}]"#);

    assert_eq!(traced.output, json!([{ "label": "AB" }]));
    assert!(
        iter_trace_events(&traced.trace).into_iter().any(|event| {
            event.kind == TraceEventKind::ArgEval
                && event.operator.as_deref() == Some("concat")
                && attr_number(event, "arg_index") == Some(0)
                && event
                    .output
                    .as_ref()
                    .and_then(|snapshot| snapshot.value.as_ref())
                    == Some(&json!("B"))
        }),
        "v2 eager operator args should be traced when actually evaluated"
    );
    assert_trace_shape(&traced.trace);
}

#[test]
fn trace_v2_generated_arrays_respect_array_limit() {
    let map_yaml = r#"
version: 2
input:
  format: json
mappings:
  - target: nested
    expr: [3, { range: [0, "$"] }, { op: "map", args: [[3, { range: [0, "$"] }]] }]
"#;
    let flat_map_yaml = r#"
version: 2
input:
  format: json
mappings:
  - target: nested
    expr: [3, { range: [0, "$"] }, { flat_map: [[3, { range: [0, "$"] }]] }]
"#;
    let map_step_yaml = r#"
version: 2
input:
  format: json
mappings:
  - target: nested
    expr:
      - 4
      - range: [1, "$"]
      - map:
        - range: [0, "$"]
"#;
    let options = NormalizationOptions {
        max_array_len: 8,
        ..NormalizationOptions::default()
    };

    for yaml in [map_yaml, flat_map_yaml, map_step_yaml] {
        let rule = parse_rule(yaml);
        let err = transform_input_with_trace_with_base_dir_and_options(
            &rule,
            InputData::Text("[{}]"),
            None,
            None,
            &options,
            &TransformTraceOptions::raw(),
        )
        .expect_err("trace should enforce generated array limit");
        assert_eq!(err.error.kind, TransformErrorKind::ExprError);
        assert!(
            err.error
                .message
                .contains("generated array items exceed configured limit")
        );
        assert_trace_shape(&err.trace);
    }
}

include!("transform_trace_semantics/short_circuit.rs");

include!("transform_trace_semantics/collection.rs");

include!("transform_trace_semantics/operator_inventory.rs");

include!("transform_trace_semantics/branch.rs");
include!("transform_trace_semantics/record_finalize.rs");

#[test]
fn trace_v2_if_does_not_evaluate_unselected_branch() {
    let yaml = r#"
version: 2
input:
  format: json
mappings:
  - target: "label"
    expr:
      - "@input.enabled"
      - if:
          cond:
            eq: ["$", true]
          then:
            - "enabled"
          else:
            - "@item.label"
"#;

    assert_traced_output_matches_normal(
        yaml,
        r#"[{"enabled":true}]"#,
        json!([{ "label": "enabled" }]),
    );
}