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// This is the implementation of the test harness for running translated
// C code. For the actual test cases, see test/run_translated_c.zig.
const std = @import("std");
const build = std.build;
const ArrayList = std.ArrayList;
const fmt = std.fmt;
const mem = std.mem;
const fs = std.fs;
pub const RunTranslatedCContext = struct {
b: *build.Builder,
step: *build.Step,
test_index: usize,
test_filter: ?[]const u8,
target: std.zig.CrossTarget,
const TestCase = struct {
name: []const u8,
sources: ArrayList(SourceFile),
expected_stdout: []const u8,
allow_warnings: bool,
const SourceFile = struct {
filename: []const u8,
source: []const u8,
};
pub fn addSourceFile(self: *TestCase, filename: []const u8, source: []const u8) void {
self.sources.append(SourceFile{
.filename = filename,
.source = source,
}) catch unreachable;
}
};
pub fn create(
self: *RunTranslatedCContext,
allow_warnings: bool,
filename: []const u8,
name: []const u8,
source: []const u8,
expected_stdout: []const u8,
) *TestCase {
const tc = self.b.allocator.create(TestCase) catch unreachable;
tc.* = TestCase{
.name = name,
.sources = ArrayList(TestCase.SourceFile).init(self.b.allocator),
.expected_stdout = expected_stdout,
.allow_warnings = allow_warnings,
};
tc.addSourceFile(filename, source);
return tc;
}
pub fn add(
self: *RunTranslatedCContext,
name: []const u8,
source: []const u8,
expected_stdout: []const u8,
) void {
const tc = self.create(false, "source.c", name, source, expected_stdout);
self.addCase(tc);
}
pub fn addAllowWarnings(
self: *RunTranslatedCContext,
name: []const u8,
source: []const u8,
expected_stdout: []const u8,
) void {
const tc = self.create(true, "source.c", name, source, expected_stdout);
self.addCase(tc);
}
pub fn addCase(self: *RunTranslatedCContext, case: *const TestCase) void {
const b = self.b;
const annotated_case_name = fmt.allocPrint(self.b.allocator, "run-translated-c {s}", .{case.name}) catch unreachable;
if (self.test_filter) |filter| {
if (mem.indexOf(u8, annotated_case_name, filter) == null) return;
}
const write_src = b.addWriteFiles();
for (case.sources.items) |src_file| {
write_src.add(src_file.filename, src_file.source);
}
const translate_c = b.addTranslateC(write_src.getFileSource(case.sources.items[0].filename).?);
translate_c.step.name = b.fmt("{s} translate-c", .{annotated_case_name});
const exe = translate_c.addExecutable();
exe.setTarget(self.target);
exe.step.name = b.fmt("{s} build-exe", .{annotated_case_name});
exe.linkLibC();
const run = exe.run();
run.step.name = b.fmt("{s} run", .{annotated_case_name});
if (!case.allow_warnings) {
run.expectStdErrEqual("");
}
run.expectStdOutEqual(case.expected_stdout);
self.step.dependOn(&run.step);
}
};
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