Add shell automated tests

tools/emul/README.md

@@ -25,6 +25,16 @@ We don't try to emulate real hardware to ease the development of device drivers
 because so far, I don't see the advantage of emulation versus running code on
 the real thing.
 
+By default, the shell initialized itself with a CFS device containing the
+contents of `cfsin/` at launch (it's packed on the fly). You can specify an
+alternate CFS device file (it has to be packaed already) through the `-f` flag.
+
+By default, the shell runs interactively, but you can also pipe contents through
+stdin instead. The contents will be interpreted exactly as if you had typed it
+yourself and the result will be spit in stdout (it includes your typed in
+contents because the Collapse OS console echoes back every character that is
+sent to it.). This feature is useful for automated tests in `tools/tests/shell`.
+
 ## zasm
 
 `zasm/zasm` is `apps/zasm` wrapped in an emulator. It is quite central to the

tools/emul/shell/shell.c

@@ -1,5 +1,6 @@
 #include <stdint.h>
 #include <stdio.h>
+#include <unistd.h>
 #include <termios.h>
 #include "../emul.h"
 #include "shell-bin.h"
@@ -135,12 +136,36 @@ static void iowr_fsaddr(uint8_t val)
     }
 }
 
-int main()
+int main(int argc, char *argv[])
 {
+    FILE *fp = NULL;
+    while (1) {
+        int c = getopt(argc, argv, "f:");
+        if (c < 0) {
+            break;
+        }
+        switch (c) {
+            case 'f':
+                fp = fopen(optarg, "r");
+                if (fp == NULL) {
+                    fprintf(stderr, "Can't open %s\n", optarg);
+                    return 1;
+                }
+                break;
+            default:
+                fprintf(stderr, "Usage: shell [-f fsdev]\n");
+                return 1;
+        }
+    }
     // Setup fs blockdev
-    FILE *fp = popen("../cfspack/cfspack cfsin", "r");
+    if (fp == NULL) {
+        fp = popen("../cfspack/cfspack cfsin", "r");
+        if (fp == NULL) {
+            fprintf(stderr, "Can't initialize filesystem. Leaving blank.\n");
+        }
+    }
     if (fp != NULL) {
-        printf("Initializing filesystem\n");
+        fprintf(stderr, "Initializing filesystem\n");
         int i = 0;
         int c = fgetc(fp);
         while (c != EOF) {
@@ -150,19 +175,20 @@ int main()
         }
         fsdev_size = i;
         pclose(fp);
-    } else {
-        printf("Can't initialize filesystem. Leaving blank.\n");
     }
 
-    // Turn echo off: the shell takes care of its own echoing.
+    bool tty = isatty(fileno(stdin));
     struct termios termInfo;
-    if (tcgetattr(0, &termInfo) == -1) {
-        printf("Can't setup terminal.\n");
-        return 1;
+    if (tty) {
+        // Turn echo off: the shell takes care of its own echoing.
+        if (tcgetattr(0, &termInfo) == -1) {
+            printf("Can't setup terminal.\n");
+            return 1;
+        }
+        termInfo.c_lflag &= ~ECHO;
+        termInfo.c_lflag &= ~ICANON;
+        tcsetattr(0, TCSAFLUSH, &termInfo);
     }
-    termInfo.c_lflag &= ~ECHO;
-    termInfo.c_lflag &= ~ICANON;
-    tcsetattr(0, TCSAFLUSH, &termInfo);
 
 
     Machine *m = emul_init();
@@ -182,10 +208,12 @@ int main()
 
     while (running && emul_step());
 
-    printf("Done!\n");
-    termInfo.c_lflag |= ECHO;
-    termInfo.c_lflag |= ICANON;
-    tcsetattr(0, TCSAFLUSH, &termInfo);
-    emul_printdebug();
+    if (tty) {
+        printf("Done!\n");
+        termInfo.c_lflag |= ECHO;
+        termInfo.c_lflag |= ICANON;
+        tcsetattr(0, TCSAFLUSH, &termInfo);
+        emul_printdebug();
+    }
     return 0;
 }

tools/tests/Makefile

@@ -2,6 +2,7 @@ EMULDIR = ../emul
 
 .PHONY: run
 run:
-	$(MAKE) -C $(EMULDIR) zasm/zasm runbin/runbin
+	$(MAKE) -C $(EMULDIR) zasm/zasm runbin/runbin shell/shell
 	cd unit && ./runtests.sh
 	cd zasm && ./runtests.sh
+	cd shell && ./runtests.sh

tools/tests/shell/.gitignore

@@ -0,0 +1 @@
+/test.cfs

tools/tests/shell/cfsin/bar

@@ -0,0 +1 @@
+Hello Bar!

tools/tests/shell/cfsin/foo

@@ -0,0 +1 @@
+Hello Foo!

tools/tests/shell/fls.expected

@@ -0,0 +1,5 @@
+Collapse OS
+> fls
+bar
+foo
+> 

tools/tests/shell/fls.replay

@@ -0,0 +1 @@
+fls

tools/tests/shell/print.expected

@@ -0,0 +1,4 @@
+Collapse OS
+> print 42
+42
+> 

tools/tests/shell/print.replay

@@ -0,0 +1 @@
+print 42

tools/tests/shell/runtests.sh

@@ -0,0 +1,30 @@
+#!/bin/sh -e
+
+EMULDIR=../../emul
+SHELL=../../emul/shell/shell
+
+replay() {
+    fn=$1
+    replayfn=${fn%.*}.expected
+    ACTUAL=$("${SHELL}" -f test.cfs < "${fn}" 2> /dev/null)
+    EXPECTED=$(cat ${replayfn})
+    if [ "$ACTUAL" = "$EXPECTED" ]; then
+        echo ok
+    else
+        echo different. Whole output:
+        echo "${ACTUAL}"
+        exit 1
+    fi
+}
+
+../../cfspack/cfspack cfsin > test.cfs
+
+if [ ! -z $1 ]; then
+    replay $1
+    exit 0
+fi
+
+for fn in *.replay; do
+    echo "Replaying ${fn}"
+    replay "${fn}"
+done