zig/test/compile_errors.zig
Andrew Kelley 29cfd47d65 re-enable test-cases and get them all passing
Instead of using `zig test` to build a special version of the compiler
that runs all the test-cases, the zig build system is now used as much
as possible - all with the basic steps found in the standard library.

For incremental compilation tests (the ones that look like foo.0.zig,
foo.1.zig, foo.2.zig, etc.), a special version of the compiler is
compiled into a utility executable called "check-case" which checks
exactly one sequence of incremental updates in an independent
subprocess. Previously, all incremental and non-incremental test cases
were done in the same test runner process.

The compile error checking code is now simpler, but also a bit
rudimentary, and so it additionally makes sure that the actual compile
errors do not include *extra* messages, and it makes sure that the
actual compile errors output in the same order as expected. It is also
based on the "ends-with" property of each line rather than the previous
logic, which frankly I didn't want to touch with a ten-meter pole. The
compile error test cases have been updated to pass in light of these
differences.

Previously, 'error' mode with 0 compile errors was used to shoehorn in a
different kind of test-case - one that only checks if a piece of code
compiles without errors. Now there is a 'compile' mode of test-cases,
and 'error' must be only used when there are greater than 0 errors.

link test cases are updated to omit the target object format argument
when calling checkObject since that is no longer needed.

The test/stage2 directory is removed; the 2 files within are moved to be
directly in the test/ directory.
2023-03-15 10:48:14 -07:00

139 lines
4.2 KiB
Zig

const std = @import("std");
const builtin = @import("builtin");
const Cases = @import("src/Cases.zig");
pub fn addCases(ctx: *Cases) !void {
{
const case = ctx.obj("multiline error messages", .{});
case.addError(
\\comptime {
\\ @compileError("hello\nworld");
\\}
, &[_][]const u8{
\\:2:5: error: hello
\\ world
});
case.addError(
\\comptime {
\\ @compileError(
\\ \\
\\ \\hello!
\\ \\I'm a multiline error message.
\\ \\I hope to be very useful!
\\ \\
\\ \\also I will leave this trailing newline here if you don't mind
\\ \\
\\ );
\\}
, &[_][]const u8{
\\:2:5: error:
\\ hello!
\\ I'm a multiline error message.
\\ I hope to be very useful!
\\
\\ also I will leave this trailing newline here if you don't mind
\\
});
}
{
const case = ctx.obj("isolated carriage return in multiline string literal", .{});
case.addError("const foo = \\\\\test\r\r rogue carriage return\n;", &[_][]const u8{
":1:19: error: expected ';' after declaration",
":1:20: note: invalid byte: '\\r'",
});
}
{
const case = ctx.obj("missing semicolon at EOF", .{});
case.addError(
\\const foo = 1
, &[_][]const u8{
\\:1:14: error: expected ';' after declaration
});
}
{
const case = ctx.obj("argument causes error", .{});
case.addError(
\\pub export fn entry() void {
\\ var lib: @import("b.zig").ElfDynLib = undefined;
\\ _ = lib.lookup(fn () void);
\\}
, &[_][]const u8{
":3:12: error: unable to resolve comptime value",
":3:12: note: argument to function being called at comptime must be comptime-known",
":2:55: note: expression is evaluated at comptime because the generic function was instantiated with a comptime-only return type",
});
case.addSourceFile("b.zig",
\\pub const ElfDynLib = struct {
\\ pub fn lookup(self: *ElfDynLib, comptime T: type) ?T {
\\ _ = self;
\\ return undefined;
\\ }
\\};
);
}
{
const case = ctx.obj("astgen failure in file struct", .{});
case.addError(
\\pub export fn entry() void {
\\ _ = (@sizeOf(@import("b.zig")));
\\}
, &[_][]const u8{
":1:1: error: expected type expression, found '+'",
});
case.addSourceFile("b.zig",
\\+
);
}
{
const case = ctx.obj("invalid store to comptime field", .{});
case.addError(
\\const a = @import("a.zig");
\\
\\export fn entry() void {
\\ _ = a.S.foo(a.S{ .foo = 2, .bar = 2 });
\\}
, &[_][]const u8{
":4:23: error: value stored in comptime field does not match the default value of the field",
":2:25: note: default value set here",
});
case.addSourceFile("a.zig",
\\pub const S = struct {
\\ comptime foo: u32 = 1,
\\ bar: u32,
\\ pub fn foo(x: @This()) void {
\\ _ = x;
\\ }
\\};
);
}
{
const case = ctx.obj("file in multiple modules", .{});
case.addDepModule("foo", "foo.zig");
case.addError(
\\comptime {
\\ _ = @import("foo");
\\ _ = @import("foo.zig");
\\}
, &[_][]const u8{
":1:1: error: file exists in multiple modules",
":1:1: note: root of module root.foo",
":3:17: note: imported from module root",
});
case.addSourceFile("foo.zig",
\\const dummy = 0;
);
}
}