Breaking out ex24 iofunctions files and writing a shell-based test thingy

.gitignore

@@ -7,3 +7,4 @@
 !*.h
 !*.mk
 !test_*.sh
+!*-input

Makefile

@@ -10,6 +10,7 @@ all: $(EXERCISES)
 
 test: all
 	$(MAKE) -f ex19.mk test
+	./test_ex24_iofunctions.sh
 
 
 clean:

ex24_iofunctions01.c

@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include "dbg.h"
+
+
+int main(int argc, char *argv[])
+{
+    int a, b, rc;
+    char c;
+    printf("Reading from stdin: <a:number> <b:number> <c:letter>\n> ");
+    rc = fscanf(stdin, "%d %d %c", &a, &b, &c);
+    check(rc == 3, "Failed to read from stdin.");
+
+    printf("Read in: a=%d b=%d c=%c\n", a, b, c);
+
+    return 0;
+
+error:
+    return 1;
+}

ex24_iofunctions02.c

@@ -2,28 +2,11 @@
 #include "dbg.h"
 
 
-int fscanf_example01()
-{
-    int a, b, rc;
-    char c;
-    printf("Reading from stdin: <a:number> <b:number> <c:letter>\n> ");
-    rc = fscanf(stdin, "%d %d %c", &a, &b, &c);
-    check(rc == 3, "Failed to read from stdin.");
-
-    printf("Read in: a=%d b=%d c=%c\n", a, b, c);
-
-    return 1;
-
-error:
-    return 0;
-}
-
-
-int fscanf_example02()
+int main(int argc, char *argv[])
 {
     int a, b, rc;
     char c;
-    char filename[1024];
+    char filename[1024 * 2];
     FILE *fp;
 
     printf("Provide filename from which to inputs\n> ");
@@ -32,7 +15,7 @@ int fscanf_example02()
     fp = fopen(filename, "r");
     check(fp != NULL, "Failed to open file %s", filename);
 
-    printf("Reading from \"%s\": <a:number> <b:number> <c:letter>\n", filename);
+    printf("Reading from file: <a:number> <b:number> <c:letter>\n");
     rc = fscanf(fp, "%d %d %c", &a, &b, &c);
     check(rc == 3, "Failed to read from \"%s\".", filename);
 
@@ -40,18 +23,6 @@ int fscanf_example02()
     rc = fclose(fp);
     check(rc != EOF, "Failed to close file \"%s\"", filename);
 
-    return 1;
-
-error:
-    return 0;
-}
-
-
-int main(int argc, char *argv[])
-{
-    check(fscanf_example01() == 1, "Fail!");
-    check(fscanf_example02() == 1, "Fail!");
-
     return 0;
 
 error:

test_ex19.sh

@@ -5,20 +5,20 @@ EXIT_CODE=0
 run_test()
 {
     echo -n " $1"
-    cat $2 | ./ex19 >/dev/null
-    if [[ $? -eq 0 ]]
+    cat "$2" | ./ex19 >/dev/null
+    if [[ "$?" -eq "0" ]]
     then
         echo " ... OK"
     else
         echo " ... FAIL"
         EXIT_CODE=1
     fi
-    rm -f $2
+    rm -f "$2"
 }
 
 
-tmp_01=`mktemp`
-cat > $tmp_01 <<EOF
+tmp_01="`mktemp`"
+cat > "$tmp_01" <<EOF
 l
 n
 w
@@ -50,8 +50,8 @@ a
 a
 EOF
 
-tmp_02=`mktemp`
-cat > $tmp_02 <<EOF
+tmp_02="`mktemp`"
+cat > "$tmp_02" <<EOF
 l
 a
 a
@@ -70,8 +70,8 @@ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 EOF
 
 
-run_test '01' $tmp_01
-run_test '02' $tmp_02
+run_test '01' "$tmp_01"
+run_test '02' "$tmp_02"
 
 
 exit $EXIT_CODE

test_ex24_iofunctions.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+EXIT_CODE=0
+
+run_test()
+{
+    echo -n " $1"
+    out_tmp="$(mktemp)"
+    ./ex24_iofunctions$1 < "$2" > "$out_tmp"
+    diff_out="$(mktemp)"
+    diff -u "$3" "$out_tmp" > "$diff_out"
+    diff_count="$(cat "$diff_out" | wc -l)"
+    if [[ "$?" == "0" ]] && [[ "$diff_count" == "0" ]]
+    then
+        echo " ... OK"
+    else
+        echo " ... FAIL"
+        echo "    diff count => $diff_count"
+        cat "$diff_out"
+        EXIT_CODE=1
+    fi
+    rm -f "$2" "$out_tmp" "$diff_out"
+}
+
+
+tmp_01="$(mktemp)"
+cat > "$tmp_01" <<EOF
+2 8 n
+EOF
+expected_01="$(mktemp)"
+cat > "$expected_01" <<EOF
+Reading from stdin: <a:number> <b:number> <c:letter>
+> Read in: a=2 b=8 c=n
+EOF
+
+tmp_02="$(mktemp)"
+tmp_02in="$(mktemp)"
+cat > "$tmp_02in" <<EOF
+1 4 a
+EOF
+cat > "$tmp_02" <<EOF
+$tmp_02in
+EOF
+expected_02="$(mktemp)"
+cat > "$expected_02" <<EOF
+Provide filename from which to inputs
+> Reading from file: <a:number> <b:number> <c:letter>
+Read in: a=1 b=4 c=a
+EOF
+
+
+run_test '01' "$tmp_01" "$expected_01"
+run_test '02' "$tmp_02" "$expected_02"
+
+
+exit $EXIT_CODE