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std.Build.Step.Compile: add a way to expect an error message

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other than a compile error, specifically
This commit is contained in:
Andrew Kelley 2024-10-14 22:24:03 -07:00
parent 1e785409bb
commit a4cc344aa0
1 changed files with 32 additions and 8 deletions
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40
lib/std/Build/Step/Compile.zig
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@ -236,6 +236,7 @@ pub const ExpectedCompileErrors = union(enum) {
contains: []const u8,
exact: []const []const u8,
starts_with: []const u8,
stderr_contains: []const u8,
};
pub const Entry = union(enum) {
@ -1945,24 +1946,24 @@ fn checkCompileErrors(compile: *Compile) !void {
const arena = compile.step.owner.allocator;
var actual_stderr_list = std.ArrayList(u8).init(arena);
var actual_errors_list = std.ArrayList(u8).init(arena);
try actual_eb.renderToWriter(.{
.ttyconf = .no_color,
.include_reference_trace = false,
.include_source_line = false,
}, actual_stderr_list.writer());
const actual_stderr = try actual_stderr_list.toOwnedSlice();
}, actual_errors_list.writer());
const actual_errors = try actual_errors_list.toOwnedSlice();
// Render the expected lines into a string that we can compare verbatim.
var expected_generated = std.ArrayList(u8).init(arena);
const expect_errors = compile.expect_errors.?;
var actual_line_it = mem.splitScalar(u8, actual_stderr, '\n');
var actual_line_it = mem.splitScalar(u8, actual_errors, '\n');
// TODO merge this with the testing.expectEqualStrings logic, and also CheckFile
switch (expect_errors) {
.starts_with => |expect_starts_with| {
if (std.mem.startsWith(u8, actual_stderr, expect_starts_with)) return;
if (std.mem.startsWith(u8, actual_errors, expect_starts_with)) return;
return compile.step.fail(
\\
\\========= should start with: ============
@ -1970,7 +1971,7 @@ fn checkCompileErrors(compile: *Compile) !void {
\\========= but not found: ================
\\{s}
\\=========================================
, .{ expect_starts_with, actual_stderr });
, .{ expect_starts_with, actual_errors });
},
.contains => |expect_line| {
while (actual_line_it.next()) |actual_line| {
@ -1978,6 +1979,29 @@ fn checkCompileErrors(compile: *Compile) !void {
return;
}
return compile.step.fail(
\\
\\========= should contain: ===============
\\{s}
\\========= but not found: ================
\\{s}
\\=========================================
, .{ expect_line, actual_errors });
},
.stderr_contains => |expect_line| {
const actual_stderr: []const u8 = if (compile.step.result_error_msgs.items.len > 0)
compile.step.result_error_msgs.items[0]
else
&.{};
compile.step.result_error_msgs.clearRetainingCapacity();
var stderr_line_it = mem.splitScalar(u8, actual_stderr, '\n');
while (stderr_line_it.next()) |actual_line| {
if (!matchCompileError(actual_line, expect_line)) continue;
return;
}
return compile.step.fail(
\\
\\========= should contain: ===============
@ -2003,7 +2027,7 @@ fn checkCompileErrors(compile: *Compile) !void {
try expected_generated.append('\n');
}
if (mem.eql(u8, expected_generated.items, actual_stderr)) return;
if (mem.eql(u8, expected_generated.items, actual_errors)) return;
return compile.step.fail(
\\
@ -2012,7 +2036,7 @@ fn checkCompileErrors(compile: *Compile) !void {
\\========= but found: ====================
\\{s}
\\=========================================
, .{ expected_generated.items, actual_stderr });
, .{ expected_generated.items, actual_errors });
},
}
}