#include "../src/generators.h"
#include "gtest/gtest.h"

TEST(Generator, SineWave)
{
  sample_table_t t = gen_sin();
  // Starts at 0
  EXPECT_EQ(t[0], 0);
}

TEST(Generator, SquareWave) {
  sample_table_t t = gen_squ();
  // Starts at 1
  EXPECT_EQ(t[0], 1);
  // Ends at -1
  EXPECT_EQ(t[DEFAULT_N_SAMPLES - 1], -1);
}

TEST(Generator, SawWave) {
  sample_table_t t = gen_saw();
  // Starts at -1
  EXPECT_EQ(t[0], -1);
}

TEST(Generator, TriangleWave) {
  sample_table_t t = gen_tri();
  // Starts at -1
  EXPECT_EQ(t[0], -1);
}

TEST(Generator, InverseSawWave) {
  sample_table_t t = gen_isaw();
  // Starts at 1
  EXPECT_EQ(t[0], 1);
}

TEST(Generator, NoiseWave)
{
  sample_table_t t = gen_noise();
  // Always start and end at 0
  EXPECT_EQ(t[0], 0);
  EXPECT_EQ(t[DEFAULT_N_SAMPLES - 1], 0);
  // Check second value, probably not equal to 0
  EXPECT_NE(t[1], 0);
}