expectApproxEqRelInner
Function parameters
Parameters
- T:type
- expected:T
- actual:T
- tolerance:T
Type definitions in this namespace
Types
- Reader
- A `std.Io.Reader` that writes a predetermined list of buffers during `stream`.
- ReaderIndirect
- A `std.Io.Reader` that gets its data from another `std.Io.Reader`, and always
This function is intended to be used only in tests.
Functions
- expectError
- This function is intended to be used only in tests.
- expectEqual
- This function is intended to be used only in tests.
- expectFmt
- This function is intended to be used only in tests.
- expectApproxEqAbs
- This function is intended to be used only in tests.
- expectApproxEqRel
- This function is intended to be used only in tests.
- expectEqualSlices
- This function is intended to be used only in tests.
- expectEqualSentinel
- This function is intended to be used only in tests.
- expect
- This function is intended to be used only in tests.
- expectEqualDeep
- This function is intended to be used only in tests.
- checkAllAllocationFailures
- Exhaustively check that allocation failures within `test_fn` are handled without
- refAllDecls
- Given a type, references all the declarations inside, so that the semantic analyzer sees them.
- refAllDeclsRecursive
- Given a type, recursively references all the declarations inside, so that the semantic analyzer sees them.
- fuzz
- Inline to avoid coverage instrumentation.
Provides deterministic randomness in unit tests.
Values
- random_seed
- Provides deterministic randomness in unit tests.
- failing_allocator
- = failing_allocator_instance.allocator()
- allocator
- This should only be used in temporary test programs.
- log_level
- TODO https://github.com/ziglang/zig/issues/5738
- backend_can_print
- = switch (builtin.zig_backend) { .stage2_aarch64, .stage2_powerpc, .stage2_riscv64, .stage2_spirv, => false, else => true, }
Source
Implementation
fn expectApproxEqRelInner(comptime T: type, expected: T, actual: T, tolerance: T) !void {
switch (@typeInfo(T)) {
.float => if (!math.approxEqRel(T, expected, actual, tolerance)) {
print("actual {}, not within relative tolerance {} of expected {}\n", .{ actual, tolerance, expected });
return error.TestExpectedApproxEqRel;
},
.comptime_float => @compileError("Cannot approximately compare two comptime_float values"),
else => @compileError("Unable to compare non floating point values"),
}
}