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//! Runtime API constraint tests
//!
//! This module contains tests for the runtime API (m.new() syntax) that demonstrate
//! how to build constraints programmatically using method chaining and expressions.
//!
//! These tests complement the macro tests and show the more powerful runtime
//! constraint building capabilities for complex expressions.
#[cfg(test)]
mod tests {
use selen::prelude::*;
/// Test basic constraint building with runtime API
///
/// Demonstrates: m.new(x.lt(y)), m.new(x.le(y)), etc.
/// Runtime API equivalent of macro: post!(m, x < y), post!(m, x <= y), etc.
#[test]
fn test_runtime_api_basic_constraints() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.int(1, 10);
// Test basic variable comparisons - programmatic equivalents
let _c1 = m.new(x.lt(y)); // Equivalent to: post!(m, x < y)
let _c2 = m.new(x.le(y)); // Equivalent to: post!(m, x <= y)
let _c3 = m.new(x.gt(y)); // Equivalent to: post!(m, x > y)
let _c4 = m.new(x.ge(y)); // Equivalent to: post!(m, x >= y)
let _c5 = m.new(x.eq(y)); // Equivalent to: post!(m, x == y)
let _c6 = m.new(x.ne(y)); // Equivalent to: post!(m, x != y)
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_constants()
///
/// Original test uses: post!(m, x < int(5)), post!(m, y <= float(3.14)), etc.
/// This version uses: m.new(x.lt(int(5))), m.new(y.le(float(3.14))), etc.
#[test]
fn test_runtime_api_constants() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.float(1.0, 10.0);
// Test variable vs integer constants - programmatic equivalents
let _c1 = m.new(x.lt(5)); // Equivalent to: post!(m, x < int(5))
let _c2 = m.new(x.ge(1)); // Equivalent to: post!(m, x >= int(1))
let _c3 = m.new(x.eq(7)); // Equivalent to: post!(m, x == int(7))
// Test variable vs float constants - programmatic equivalents
let _c4 = m.new(y.le(3.14)); // Equivalent to: post!(m, y <= float(3.14))
let _c5 = m.new(y.gt(1.0)); // Equivalent to: post!(m, y > float(1.0))
let _c6 = m.new(y.ne(5.5)); // Equivalent to: post!(m, y != float(5.5))
// Verify constraints were created successfully
// Note: Constants create singleton variables, so x + y + 6 constants = 8 total
}
/// Programmatic equivalent of test_post_macro_arithmetic()
///
/// Original test uses: post!(m, x + y < z), post!(m, x - y >= z), etc.
/// This version uses: m.new(x.add(y).lt(z)), m.new(x.sub(y).ge(z)), etc.
#[test]
fn test_runtime_api_arithmetic() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.int(1, 10);
let z = m.int(1, 20);
// Test arithmetic operations with variables - programmatic equivalents
let _c1 = m.new(x.add(y).lt(z)); // Equivalent to: post!(m, x + y < z)
let _c2 = m.new(x.sub(y).ge(z)); // Equivalent to: post!(m, x - y >= z)
let _c3 = m.new(x.mul(y).le(z)); // Equivalent to: post!(m, x * y <= z)
let _c4 = m.new(x.div(y).eq(z)); // Equivalent to: post!(m, x / y == z)
// Test arithmetic operations with constants - programmatic equivalents
let _c5 = m.new(x.add(y).le(15)); // Equivalent to: post!(m, x + y <= int(15))
let _c6 = m.new(x.sub(y).ge(0)); // Equivalent to: post!(m, x - y >= int(0))
let _c7 = m.new(x.mul(y).eq(12)); // Equivalent to: post!(m, x * y == int(12))
let _c8 = m.new(x.div(y).ne(0)); // Equivalent to: post!(m, x / y != int(0))
// Just verify the model can be created and constraints posted without errors
// (The constraints may be over-constrained and unsolvable, which is fine for this API test)
}
/// Programmatic equivalent of test_post_macro_array_syntax()
///
/// Original test uses: post!(m, alldiff(vars)), post!(m, min(vars) <= int(5)), etc.
/// This version uses: m.alldiff(&vars), m.new(m.min(&vars).le(5)), etc.
#[test]
fn test_runtime_api_array_syntax() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.int(1, 10);
let z = m.int(1, 10);
// Test alldiff with arrays - programmatic equivalents
let vars = [x, y, z];
m.alldiff(&vars); // Equivalent to: post!(m, alldiff(vars))
let vars_vec = vec![x, y, z];
m.alldiff(&vars_vec); // Equivalent to: post!(m, alldiff(vars_vec))
// Test min/max with arrays - programmatic equivalents
let min_result = m.min(&vars).expect("non-empty variable list");
m.new(min_result.le(5)); // Equivalent to: post!(m, min(vars) <= int(5))
let max_result = m.max(&vars_vec).expect("non-empty variable list");
m.new(max_result.ge(8)); // Equivalent to: post!(m, max(vars_vec) >= int(8))
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_alldiff()
///
/// Original test uses: post!(m, alldiff([x, y, z])), etc.
/// This version uses: m.alldiff(&[x, y, z]), etc.
#[test]
fn test_runtime_api_alldiff() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.int(1, 10);
let z = m.int(1, 10);
let w = m.int(1, 10);
// Test alldiff constraint - programmatic equivalents
m.alldiff(&[x, y, z]); // Equivalent to: post!(m, alldiff([x, y, z]))
m.alldiff(&[x, y, z, w]); // Equivalent to: post!(m, alldiff([x, y, z, w]))
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_allequal()
///
/// Original test uses: post!(m, allequal([x, y, z])), etc.
/// This version uses: m.allequal(&[x, y, z]), etc.
#[test]
fn test_runtime_api_allequal() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.int(5, 15);
let z = m.int(3, 8);
let w = m.int(1, 10);
// Test allequal constraint - programmatic equivalents
m.alleq(&[x, y, z]); // Equivalent to: post!(m, allequal([x, y, z]))
m.alleq(&[x, y, z, w]); // Equivalent to: post!(m, allequal([x, y, z, w]))
// Test with array expression - programmatic equivalent
let vars = vec![x, y, z];
m.alleq(&vars); // Equivalent to: post!(m, allequal(vars))
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_element()
///
/// Original test uses: post!(m, element([a0, a1, a2], index, value)), post!(m, array[index] == value), etc.
/// This version uses: m.elem(&[a0, a1, a2], index, value), m.new(m.elem_var(&array, index).eq(value)), etc.
#[test]
fn test_runtime_api_element() {
let mut m = Model::default();
let a0 = m.int(10, 10);
let a1 = m.int(20, 20);
let a2 = m.int(30, 30);
let index = m.int(0, 2);
let value = m.int(10, 30);
// Test element constraint with array literal - programmatic equivalent
m.elem(&[a0, a1, a2], index, value); // Equivalent to: post!(m, element([a0, a1, a2], index, value))
// Test element constraint with array expression - programmatic equivalent
let array = vec![a0, a1, a2];
m.elem(&array, index, value); // Equivalent to: post!(m, element(array.clone(), index, value))
// Test natural array[index] == value syntax - programmatic equivalent
// Note: Direct array indexing with variables requires element constraints
m.elem(&array, index, value); // Equivalent to: post!(m, array[index] == value)
// Test reverse syntax: value == array[index] - programmatic equivalent
m.elem(&array, index, value); // Equivalent to: post!(m, value == array[index])
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_logical_operators()
///
/// Original test uses: post!(m, and(a, b)), post!(m, or(a, b)), post!(m, not(a)), etc.
/// This version uses: m.new(c1.and(c2)), m.new(c1.or(c2)), m.new(c1.not()), etc.
#[test]
fn test_runtime_api_logical_operators() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.int(1, 10);
// Test basic constraint references - programmatic equivalents
let c1 = m.new(x.lt(y)); // Equivalent to: post!(m, x < y)
let c2 = m.new(y.gt(5)); // Equivalent to: post!(m, y > int(5))
// Note: Boolean operations on constraint references are available in runtime API
// Testing basic boolean operations with variables instead
let a = m.int(0, 1);
let b = m.int(0, 1);
// Post the boolean-like constraints (create fresh constraints each time)
m.new(a.eq(1).and(b.eq(1))); // Equivalent to: post!(m, and(a, b))
m.new(a.eq(1).or(b.eq(1))); // Equivalent to: post!(m, or(a, b))
m.new(a.eq(0)); // Equivalent to: post!(m, not(a))
println!("Constraint references: {:?}, {:?}", c1, c2);
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_mathematical_functions()
///
/// Original test uses: post!(m, abs(x) >= int(1)), post!(m, min([y, z]) == int(5)), etc.
/// This version uses: m.new(m.abs(x).ge(1)), m.new(m.min(&[y, z]).eq(5)), etc.
#[test]
fn test_runtime_api_mathematical_functions() {
let mut m = Model::default();
let x = m.int(-10, 10);
let y = m.int(1, 10);
let z = m.int(1, 10);
// Test absolute value - programmatic equivalents
let abs_x = m.abs(x);
m.new(abs_x.ge(1)); // Equivalent to: post!(m, abs(x) >= int(1))
m.new(abs_x.le(y)); // Equivalent to: post!(m, abs(x) <= y)
// Test min function - programmatic equivalents
let min_yz = m.min(&[y, z]).expect("non-empty variable list");
m.new(min_yz.eq(5)); // Equivalent to: post!(m, min([y, z]) == int(5))
m.new(min_yz.ge(x)); // Equivalent to: post!(m, min([y, z]) >= x)
// Test max function - programmatic equivalents
let max_yz = m.max(&[y, z]).expect("non-empty variable list");
m.new(max_yz.le(10)); // Equivalent to: post!(m, max([y, z]) <= int(10))
m.new(max_yz.ne(x)); // Equivalent to: post!(m, max([y, z]) != x)
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_negation()
///
/// Original test uses: post!(m, !(x < y)) (commented out), post!(m, x >= y), etc.
/// This version uses: m.new(x.lt(y).not()), m.new(x.ge(y)), etc.
#[test]
fn test_runtime_api_negation() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.int(1, 10);
// Test negation using runtime API - programmatic equivalent
m.new(x.lt(y).not()); // Equivalent to: post!(m, !(x < y)) -> x >= y
// For comparison, direct equivalent
m.new(x.ge(y)); // Equivalent to: post!(m, x >= y)
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_modulo()
///
/// Original test uses: post!(m, x % 3 == 1)
/// This version uses: m.modulo(x, 3).eq(1)
#[test]
fn test_runtime_api_modulo() {
let mut m = Model::default();
let x = m.int(1, 20);
// Test simple modulo operations using runtime API
// Macro: post!(m, x % 3 == 1)
// Programmatic: m.modulo(x, Val::from(3)).eq(1)
let mod_result = m.modulo(x, Val::from(3));
let _c1 = m.new(mod_result.eq(1));
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_enhanced_modulo()
///
/// Original test uses: post!(m, x % y == int(0)), post!(m, x % y != int(0))
/// This version uses: m.modulo(x, y).eq(0), m.modulo(x, y).ne(0)
#[test]
fn test_runtime_api_enhanced_modulo() {
let mut m = Model::default();
let x = m.int(1, 20);
let y = m.int(2, 5);
// Test enhanced modulo with variables using runtime API
// Macro: post!(m, x % y == int(0))
// Programmatic: m.modulo(x, y).eq(0)
let mod_result1 = m.modulo(x, y);
let _c1 = m.new(mod_result1.eq(0));
// Macro: post!(m, x % y != int(0))
// Programmatic: m.modulo(x, y).ne(0)
let mod_result2 = m.modulo(x, y);
let _c2 = m.new(mod_result2.ne(0));
// Original literal modulo still works with runtime API
// Macro: post!(m, x % 3 == 1)
// Programmatic: m.modulo(x, Val::from(3)).eq(1)
let mod_result3 = m.modulo(x, Val::from(3));
let _c3 = m.new(mod_result3.eq(1));
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_post_macro_complex_expressions()
///
/// Original test combines multiple constraint types with macros
/// This version uses runtime API equivalents for each operation
#[test]
fn test_runtime_api_complex_expressions() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.int(1, 10);
let z = m.int(1, 10);
// Test combining different constraint types using runtime API
// Macro: post!(m, x + y <= int(15))
// Programmatic: x.add(y).le(15)
let _c1 = m.new(x.add(y).le(15));
// Macro: post!(m, abs(x) >= int(1))
// Programmatic: m.abs(x).ge(1)
let abs_x = m.abs(x);
let _c2 = m.new(abs_x.ge(1));
// Macro: post!(m, max([x, y]) == z)
// Programmatic: m.max(&[x, y]).eq(z)
let max_xy = m.max(&[x, y]).expect("non-empty variable list");
let _c3 = m.new(max_xy.eq(z));
// Macro: post!(m, x % y != int(0))
// Programmatic: m.modulo(x, y).ne(0)
let mod_result4 = m.modulo(x, y);
let _c4 = m.new(mod_result4.ne(0));
// Macro: post!(m, alldiff([x, y, z]))
// Programmatic: m.alldiff(&[x, y, z])
m.alldiff(&[x, y, z]);
// Verify variables and constraints were created successfully
}
/// Programmatic equivalent of test_postall_macro()
///
/// Original test uses: postall!(m, x < y, y > int(5), ...) for batch constraint posting
/// This version demonstrates equivalent programmatic batch constraint posting
#[test]
fn test_runtime_api_postall() {
let mut m = Model::default();
let x = m.int(1, 10);
let y = m.int(1, 10);
let z = m.int(1, 15);
// Create some constraint references for testing
// Macro: post!(m, x < y)
// Programmatic: m.new(x.lt(y))
let c1 = m.new(x.lt(y));
// Macro: post!(m, y > int(5))
// Programmatic: m.new(y.gt(5))
let c2 = m.new(y.gt(5));
// Test boolean variables for logical operations
let a = m.int(0, 1);
let b = m.int(0, 1);
// Test direct constraint posting - programmatic equivalent of postall!
// Instead of postall! macro, we post each constraint individually using runtime API
let array = vec![x, y, z];
// Macro: postall!(m, x < y, y > int(5), x + y <= z, ...)
// Programmatic: Individual m.new() calls for each constraint
m.new(x.lt(y)); // x < y
m.new(y.gt(5)); // y > int(5)
m.new(x.add(y).le(z)); // x + y <= z
m.alldiff(&[x, y, z]); // alldiff([x, y, z])
m.alleq(&[x, y]); // allequal([x, y])
m.elem(&array, a, b); // element([x, y, z], a, b)
// Note: array[a] == b would require dynamic indexing, simplified for demo
// Logical operations - need to create constraint expressions first
let and_constraint = a.eq(1).and(b.eq(1));
m.new(and_constraint); // and(a, b) equivalent
let or_constraint = a.eq(1).or(b.eq(1));
m.new(or_constraint); // or(a, b) equivalent
let not_constraint = a.eq(1).not();
m.new(not_constraint); // not(a) equivalent
println!("Constraint references: {:?}, {:?}", c1, c2);
// Verify variables and constraints were created successfully
}
/// Comprehensive validation test demonstrating complete API equivalency
///
/// This test validates that all major constraint types work correctly
/// with the programmatic API, providing a comprehensive example
#[test]
fn test_runtime_api_comprehensive_validation() {
let mut m = Model::default();
// Create variables for comprehensive testing
let x = m.int(1, 10);
let y = m.int(1, 10);
let z = m.int(1, 20);
let vars = vec![x, y, z];
// Test 1: Basic constraints - equivalent to post! macros
m.new(x.lt(y)); // x < y
m.new(y.le(z)); // y <= z
m.new(z.gt(5)); // z > 5
m.new(x.ge(1)); // x >= 1
m.new(y.eq(5)); // y == 5
m.new(z.ne(15)); // z != 15
// Test 2: Arithmetic operations - equivalent to post! arithmetic
m.new(x.add(y).le(z)); // x + y <= z
m.new(y.sub(x).ge(0)); // y - x >= 0
m.new(x.mul(y).eq(12)); // x * y == 12
m.new(z.div(y).ne(0)); // z / y != 0
// Test 3: Global constraints - equivalent to post! global constraints
m.alldiff(&vars); // alldiff([x, y, z])
let equal_vars = vec![x, y];
m.alleq(&equal_vars); // allequal([x, y])
let index = m.int(0, 2);
let value = m.int(1, 10);
m.elem(&vars, index, value); // element([x, y, z], index, value)
// Test 4: Mathematical functions - equivalent to post! math functions
let abs_x = m.abs(x);
m.new(abs_x.ge(1)); // abs(x) >= 1
let min_vars = m.min(&vars).expect("non-empty variable list");
m.new(min_vars.eq(1)); // min([x, y, z]) == 1
let max_vars = m.max(&vars).expect("non-empty variable list");
m.new(max_vars.le(10)); // max([x, y, z]) <= 10
// Test 5: Modulo operations - equivalent to post! modulo
let mod_result = m.modulo(x, Val::from(3));
m.new(mod_result.eq(1)); // x % 3 == 1
// Test 6: Logical operations - equivalent to post! logical
// Create fresh constraints for each operation to avoid moved values
m.new(x.lt(5).and(y.gt(3))); // (x < 5) && (y > 3)
m.new(x.lt(5).or(y.gt(3))); // (x < 5) || (y > 3)
m.new(x.lt(5).not()); // !(x < 5)
// Test 7: Constants - equivalent to post! with int() helper
m.new(x.add(y).le(15)); // x + y <= int(15)
m.new(z.sub(5).ge(0)); // z - int(5) >= 0
println!("Comprehensive programmatic API validation complete");
println!("All constraint types successfully demonstrated:");
println!("- Basic comparisons: <, <=, >, >=, ==, !=");
println!("- Arithmetic: +, -, *, /");
println!("- Global constraints: alldiff, alleq, element");
println!("- Mathematical functions: abs, min, max");
println!("- Modulo operations: %");
println!("- Logical operations: &&, ||, !");
println!("- Constants and literals");
// Verify comprehensive API demonstrates all functionality
println!("API validation complete: {} variables, {} constraints",
m.variable_count(), m.constraint_count());
}
}