// Clamping with zero diff should return the center.
TEST_F(AngleTests, ClampWithZeroDiff) {
const Angle a(-kPi + 1.1f);
const Angle center(kPi - 2.1f);
const Angle max_diff(0.0f);
// This tests a negative number clamped to the range.
EXPECT_FLOAT_EQ(a.Clamp(center, max_diff).ToRadians(), center.ToRadians());
}
// Clamping a value that's below the range should clamp to the bottom boundary.
TEST_F(AngleTests, ClampBelow) {
const Angle a(-kHalfPi - 0.2f);
const Angle center(-kHalfPi);
const Angle max_diff(0.1f);
EXPECT_FLOAT_EQ(a.Clamp(center, max_diff).ToRadians(),
(center - max_diff).ToRadians());
}
// Clamping a value that's above the range should clamp to the top boundary.
TEST_F(AngleTests, ClampAbove) {
const Angle a(kHalfPi + 0.2f);
const Angle center(kHalfPi);
const Angle max_diff(0.1f);
EXPECT_FLOAT_EQ(a.Clamp(center, max_diff).ToRadians(),
(center + max_diff).ToRadians());
}
// Clamping to a range that strattles pi should wrap to the boundary that's
// closest under modular arithmetic.
TEST_F(AngleTests, ClampModularAtNegativeCenterNegativeAngle) {
const Angle a(-kPi + 1.1f);
const Angle center(kMinUniqueAngle);
const Angle max_diff(0.1f);
// This tests a negative number clamped to the range.
EXPECT_FLOAT_EQ(a.Clamp(center, max_diff).ToRadians(),
(center + max_diff).ToRadians());
}
// Clamping to a range that strattles pi should wrap to the boundary that's
// closest under modular arithmetic.
TEST_F(AngleTests, ClampModularAtPositiveCenterPositiveAngle) {
const Angle a(kPi - 0.2f);
const Angle center(kPi);
const Angle max_diff(0.1f);
// This tests a positive number clamped to the range.
EXPECT_FLOAT_EQ(a.Clamp(center, max_diff).ToRadians(),
(center - max_diff).ToRadians());
}
// Clamping to a range that strattles pi should wrap to the boundary that's
// closest under modular arithmetic.
TEST_F(AngleTests, ClampModularAtNegativeCenterPositiveAngle) {
const Angle a(kPi - 0.2f);
const Angle center(kMinUniqueAngle);
const Angle max_diff(0.1f);
// This tests a positive number clamped to a range centered about a negative
// number.
EXPECT_FLOAT_EQ(a.Clamp(center, max_diff).ToRadians(),
(center - max_diff).ToRadians());
}