fn_registry/cpp/tests/test_column_specs.cpp

// test_column_specs.cpp — Smoke / back-compat tests for declarative cell renderers.
// Issue 0081-N, v1.1.0.
//
// These tests verify:
//   1. TableInput without column_specs compiles and links (back-compat).
//   2-5. TableInput with Badge/Progress/Duration/Icon column_specs compiles and links.
//
// None of these tests call data_table::render() (requires ImGui context).
// They only verify that the new types are usable and that the symbols from
// fn_table_viz link correctly.
//
// Build: cmake --build cpp/build/linux --target test_column_specs
// Run:   ./cpp/build/linux/tests/test_column_specs

#include "core/data_table_types.h"
#include "viz/data_table.h"

#include <cassert>
#include <cstdio>
#include <string>
#include <vector>

using namespace data_table;

// Shared trivial dataset (3 rows x 4 cols).
static const char* g_cells[] = {
    "ok",    "0.75",  "250",   "fn",
    "error", "0.20",  "3500",  "type",
    "warn",  "1.00",  "12000", "fn",
};
static const std::vector<std::string> g_headers = {"status", "progress", "duration_ms", "kind"};
static const std::vector<ColumnType>  g_types   = {
    ColumnType::String, ColumnType::Float, ColumnType::Float, ColumnType::String
};

// ---------------------------------------------------------------------------
// Test 1: back-compat — TableInput without column_specs.
// ---------------------------------------------------------------------------
static void test_no_column_specs() {
    TableInput t;
    t.name    = "t1";
    t.rows    = 3;
    t.cols    = 4;
    t.cells   = g_cells;
    t.headers = g_headers;
    t.types   = g_types;
    // column_specs intentionally left empty (back-compat: default behavior).

    assert(t.column_specs.empty() && "column_specs must be empty by default");

    // Verify that render symbol is still linkable (no ImGui context needed
    // to take the address; the linker verifies the symbol resolves).
    auto* render_fn = &data_table::render;
    (void)render_fn;

    std::printf("PASS: test_no_column_specs (back-compat, column_specs empty)\n");
}

// ---------------------------------------------------------------------------
// Test 2: Badge renderer — construct TableInput with Badge column_spec.
// ---------------------------------------------------------------------------
static void test_badge_column_spec() {
    TableInput t;
    t.name    = "t2";
    t.rows    = 3;
    t.cols    = 4;
    t.cells   = g_cells;
    t.headers = g_headers;
    t.types   = g_types;

    // Column 0: Badge renderer mapping ok/error/warn to colors.
    ColumnSpec cs_status;
    cs_status.id       = "status";
    cs_status.renderer = CellRenderer::Badge;
    cs_status.badges   = {
        BadgeRule{"ok",    "#22c55e", "OK"},
        BadgeRule{"error", "#ef4444", ""},   // label empty -> use value
        BadgeRule{"warn",  "#f59e0b", "WARN"},
    };

    // Remaining columns: default Text.
    t.column_specs.resize(4);  // default-initialized = CellRenderer::Text
    t.column_specs[0] = cs_status;

    assert(t.column_specs.size() == 4);
    assert(t.column_specs[0].renderer == CellRenderer::Badge);
    assert(t.column_specs[0].badges.size() == 3);
    assert(t.column_specs[1].renderer == CellRenderer::Text);

    std::printf("PASS: test_badge_column_spec (3 badge rules, remaining cols Text)\n");
}

// ---------------------------------------------------------------------------
// Test 3: Progress renderer.
// ---------------------------------------------------------------------------
static void test_progress_column_spec() {
    TableInput t;
    t.name    = "t3";
    t.rows    = 3;
    t.cols    = 4;
    t.cells   = g_cells;
    t.headers = g_headers;
    t.types   = g_types;

    ColumnSpec cs_progress;
    cs_progress.id                 = "progress";
    cs_progress.renderer           = CellRenderer::Progress;
    cs_progress.progress_scale_100 = false;
    cs_progress.progress_color_hex = "#3b82f6";

    t.column_specs.resize(4);
    t.column_specs[1] = cs_progress;

    assert(t.column_specs[1].renderer == CellRenderer::Progress);
    assert(!t.column_specs[1].progress_scale_100);
    assert(t.column_specs[1].progress_color_hex == "#3b82f6");

    std::printf("PASS: test_progress_column_spec\n");
}

// ---------------------------------------------------------------------------
// Test 4: Duration renderer.
// ---------------------------------------------------------------------------
static void test_duration_column_spec() {
    TableInput t;
    t.name    = "t4";
    t.rows    = 3;
    t.cols    = 4;
    t.cells   = g_cells;
    t.headers = g_headers;
    t.types   = g_types;

    ColumnSpec cs_dur;
    cs_dur.id                = "duration_ms";
    cs_dur.renderer          = CellRenderer::Duration;
    cs_dur.duration_warn_ms  = 500.0f;
    cs_dur.duration_error_ms = 2000.0f;

    t.column_specs.resize(4);
    t.column_specs[2] = cs_dur;

    assert(t.column_specs[2].renderer == CellRenderer::Duration);
    assert(t.column_specs[2].duration_warn_ms  == 500.0f);
    assert(t.column_specs[2].duration_error_ms == 2000.0f);

    std::printf("PASS: test_duration_column_spec (warn=500ms error=2000ms)\n");
}

// ---------------------------------------------------------------------------
// Test 5: Icon renderer.
// ---------------------------------------------------------------------------
static void test_icon_column_spec() {
    TableInput t;
    t.name    = "t5";
    t.rows    = 3;
    t.cols    = 4;
    t.cells   = g_cells;
    t.headers = g_headers;
    t.types   = g_types;

    ColumnSpec cs_icon;
    cs_icon.id       = "kind";
    cs_icon.renderer = CellRenderer::Icon;
    cs_icon.icon_map = {
        IconMapEntry{"fn",   "TI_BOLT",     "#3b82f6"},
        IconMapEntry{"type", "TI_DATABASE", ""},
    };

    t.column_specs.resize(4);
    t.column_specs[3] = cs_icon;

    assert(t.column_specs[3].renderer == CellRenderer::Icon);
    assert(t.column_specs[3].icon_map.size() == 2);
    assert(t.column_specs[3].icon_map[0].value     == "fn");
    assert(t.column_specs[3].icon_map[0].icon_name == "TI_BOLT");

    // Verify render symbol still links with column_specs populated.
    auto* render_fn = &data_table::render;
    (void)render_fn;

    std::printf("PASS: test_icon_column_spec (2 entries, render symbol links)\n");
}

// ---------------------------------------------------------------------------
// main
// ---------------------------------------------------------------------------
int main() {
    std::printf("=== test_column_specs ===\n");
    test_no_column_specs();
    test_badge_column_spec();
    test_progress_column_spec();
    test_duration_column_spec();
    test_icon_column_spec();
    std::printf("=== ALL TESTS PASSED (5/5) ===\n");
    return 0;
}