test: add more cases for shellTest

src/shellTest.c

@@ -307,3 +307,160 @@ KTEST(shellExtractRedirectsOutputAppend)
     KT_TRUE(t, redirect.appendOut);
 }
 
+KTEST(shellExtractRedirectsInputAndOutputTogetherKeepRealArgs)
+{
+    char text[] = "sort -r < in.txt > out.txt";
+    char* argv[8];
+    int argc = shellTokenize(text, argv, 8);
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_TRUE(t, ok);
+    KT_EQ(t, argc, 2);
+    KT_STREQ(t, argv[0], "sort");
+    KT_STREQ(t, argv[1], "-r");
+    KT_STREQ(t, redirect.inPath, "in.txt");
+    KT_STREQ(t, redirect.outPath, "out.txt");
+    KT_FALSE(t, redirect.appendOut);
+}
+
+KTEST(shellExtractRedirectsOperatorsCanComeBeforeRealArgs)
+{
+    /* A real shell accepts redirection operators anywhere on the line, not
+       only trailing -- "> out.txt cat file.txt" is a weird but legal way
+       to write "cat file.txt > out.txt". */
+    char text[] = "> out.txt cat file.txt";
+    char* argv[8];
+    int argc = shellTokenize(text, argv, 8);
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_TRUE(t, ok);
+    KT_EQ(t, argc, 2);
+    KT_STREQ(t, argv[0], "cat");
+    KT_STREQ(t, argv[1], "file.txt");
+    KT_STREQ(t, redirect.outPath, "out.txt");
+}
+
+KTEST(shellExtractRedirectsLastOutputOperatorWins)
+{
+    char text[] = "cat > a.txt >> b.txt";
+    char* argv[8];
+    int argc = shellTokenize(text, argv, 8);
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_TRUE(t, ok);
+    KT_EQ(t, argc, 1);
+    KT_STREQ(t, argv[0], "cat");
+    KT_STREQ(t, redirect.outPath, "b.txt");
+    KT_TRUE(t, redirect.appendOut);
+}
+
+KTEST(shellExtractRedirectsDanglingOperatorFailsWithoutMutating)
+{
+    char text[] = "cat file.txt >";
+    char* argv[8];
+    int argc = shellTokenize(text, argv, 8);
+    int originalArgc = argc;
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_FALSE(t, ok);
+    KT_EQ(t, argc, originalArgc);
+    KT_STREQ(t, argv[0], "cat");
+    KT_STREQ(t, argv[1], "file.txt");
+    KT_STREQ(t, argv[2], ">");
+}
+
+KTEST(shellExtractRedirectsNoTokensYieldsNoRedirects)
+{
+    char* argv[1];
+    int argc = 0;
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_TRUE(t, ok);
+    KT_EQ(t, argc, 0);
+    KT_NULL(t, redirect.inPath);
+    KT_NULL(t, redirect.outPath);
+}
+
+/* `2>`/`2>>` (stderr redirection) are a separate operator family from
+   `<`/`>`/`>>` above, targeting fd 2 instead of fd 0/fd 1 -- covered on
+   their own (truncate, append, combined with stdout, last-one-wins,
+   dangling) plus one case proving the two families never interfere with
+   each other even when both appear on the same line. */
+
+KTEST(shellExtractRedirectsErrTruncate)
+{
+    char text[] = "prog 2> err.txt";
+    char* argv[8];
+    int argc = shellTokenize(text, argv, 8);
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_TRUE(t, ok);
+    KT_EQ(t, argc, 1);
+    KT_STREQ(t, argv[0], "prog");
+    KT_NULL(t, redirect.inPath);
+    KT_NULL(t, redirect.outPath);
+    KT_NOTNULL(t, redirect.errPath);
+    KT_STREQ(t, redirect.errPath, "err.txt");
+    KT_FALSE(t, redirect.appendErr);
+}
+
+KTEST(shellExtractRedirectsErrAppend)
+{
+    char text[] = "prog 2>> err.txt";
+    char* argv[8];
+    int argc = shellTokenize(text, argv, 8);
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_TRUE(t, ok);
+    KT_EQ(t, argc, 1);
+    KT_STREQ(t, argv[0], "prog");
+    KT_STREQ(t, redirect.errPath, "err.txt");
+    KT_TRUE(t, redirect.appendErr);
+}
+
+KTEST(shellExtractRedirectsStdoutAndStderrTogetherKeepRealArgs)
+{
+    char text[] = "sort -r > out.txt 2> err.txt";
+    char* argv[8];
+    int argc = shellTokenize(text, argv, 8);
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_TRUE(t, ok);
+    KT_EQ(t, argc, 2);
+    KT_STREQ(t, argv[0], "sort");
+    KT_STREQ(t, argv[1], "-r");
+    KT_STREQ(t, redirect.outPath, "out.txt");
+    KT_FALSE(t, redirect.appendOut);
+    KT_STREQ(t, redirect.errPath, "err.txt");
+    KT_FALSE(t, redirect.appendErr);
+}
+
+KTEST(shellExtractRedirectsLastErrOperatorWins)
+{
+    char text[] = "cat 2> a.txt 2>> b.txt";
+    char* argv[8];
+    int argc = shellTokenize(text, argv, 8);
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_TRUE(t, ok);
+    KT_EQ(t, argc, 1);
+    KT_STREQ(t, argv[0], "cat");
+    KT_STREQ(t, redirect.errPath, "b.txt");
+    KT_TRUE(t, redirect.appendErr);
+}
+
+KTEST(shellExtractRedirectsDanglingErrOperatorFailsWithoutMutating)
+{
+    char text[] = "cat file.txt 2>";
+    char* argv[8];
+    int argc = shellTokenize(text, argv, 8);
+    int originalArgc = argc;
+    ShellRedirect redirect;
+    bool ok = shellExtractRedirects(argv, &argc, &redirect);
+    KT_FALSE(t, ok);
+    KT_EQ(t, argc, originalArgc);
+    KT_STREQ(t, argv[0], "cat");
+    KT_STREQ(t, argv[1], "file.txt");
+    KT_STREQ(t, argv[2], "2>");
+}
+