Add CLI testing to CI

.github/workflows/ci.yml

@@ -1,10 +1,9 @@
-
 name: CI
 
 on:
   push:
     tags:
-      - '*'
+      - "*"
     branches:
       - main
   pull_request:
@@ -24,13 +23,28 @@ jobs:
       - uses: goto-bus-stop/setup-zig@v2
       - run: zig fmt --check src/*.zig
 
+  cli-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: goto-bus-stop/setup-zig@v2
+      - run: zig build
+      - run: PATH=$PATH:zig-out/bin python3 run-tests.py
+
   build:
-    needs: [test, lint]
+    needs: [test, lint, cli-test]
     if: startsWith(github.ref, 'refs/tags/v')
     strategy:
       fail-fast: false
       matrix:
-        target: [ x86_64-linux, aarch64-linux, riscv64-linux, x86_64-windows, aarch64-macos ]
+        target:
+          [
+            x86_64-linux,
+            aarch64-linux,
+            riscv64-linux,
+            x86_64-windows,
+            aarch64-macos,
+          ]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -68,10 +82,9 @@ jobs:
 
       - name: Display structure of downloaded files
         run: ls -R
-        working-directory: artifacts 
+        working-directory: artifacts
 
       - name: Create Release
         uses: softprops/action-gh-release@v1
         with:
           files: artifacts/**/*
-

run-tests.py

@@ -0,0 +1,56 @@
+import os
+import subprocess
+import difflib
+
+
+def run_test(test_file):
+    with open(test_file, "r") as f:
+        lines = f.readlines()
+        cmd = lines[0].strip()
+        expected_output = "".join(lines[1:])
+        actual_output = subprocess.check_output(cmd, shell=True).decode("utf-8").strip()
+
+        return expected_output == actual_output, expected_output, actual_output
+
+
+def print_diff(expected_output, actual_output):
+    diff = difflib.unified_diff(
+        expected_output.splitlines(keepends=True),
+        actual_output.splitlines(keepends=True),
+        fromfile="Expected",
+        tofile="Actual",
+    )
+    print("\nDifference (Expected vs Actual):")
+    print("".join(diff), end="")
+
+
+def main():
+    test_dir = "tests"
+    passed = 0
+    failed = 0
+    files = sorted(os.listdir(test_dir))
+    for test_file in files:
+        success, expected_output, actual_output = run_test(
+            os.path.join(test_dir, test_file)
+        )
+        if success:
+            passed += 1
+            print(f"\033[92m✔ {test_file}: Test passed\033[0m")
+        else:
+            failed += 1
+            print(f"\033[91m✖ {test_file}: Test failed\033[0m")
+            print_diff(expected_output, actual_output)
+            print()
+            print()
+
+    # Summary
+    print("\nTest Summary")
+    print(f"Passed: \033[92m{passed}\033[0m")
+    print(f"Failed: \033[91m{failed}\033[0m")
+
+    if failed > 0:
+        exit(1)
+
+
+if __name__ == "__main__":
+    main()

src/main.zig

@@ -60,8 +60,7 @@ fn percentDiff(a: f32, b: f32) f32 {
     if (a == 0) {
         return if (b == 0) 0.0 else std.math.inf(f32);
     }
-
-    return (b - a) / @fabs(a) * 100.0;
+    return (b - a) / @abs(a) * 100.0;
 }
 
 test "calculates percent differences correctly" {
@@ -93,7 +92,7 @@ test "calculates times differences correctly" {
 fn numberPrecision(num: f32) u8 {
     // if its a whole number, don't show decimal places otherwise, show up to 2
     // decimal places
-    if (@fabs(num - std.math.round(num)) < 0.001) {
+    if (@abs(num - std.math.round(num)) < 0.001) {
         return 0;
     } else {
         return 2;
@@ -112,7 +111,7 @@ fn sizeFormatPrecision(num: f32) u8 {
         if (@floor(num) == num) {
             return 0;
         }
-        const rounded = @round(@fabs(num));
+        const rounded = @round(@abs(num));
         if (rounded > std.math.maxInt(u64)) {
             diff = std.math.maxInt(u64);
         } else {
@@ -425,7 +424,7 @@ pub fn main() !void {
 
     // if no nums, read from stdin
     if (nums.items.len == 0) {
-        var input = std.io.getStdIn().reader().readAllAlloc(allocator, 10 * 1024 * 1024) catch |e| {
+        const input = std.io.getStdIn().reader().readAllAlloc(allocator, 10 * 1024 * 1024) catch |e| {
             std.debug.print("pc: error reading stdin: {s}\n", .{@errorName(e)});
             return std.process.exit(1);
         };
@@ -448,7 +447,7 @@ pub fn main() !void {
     defer rows.deinit();
 
     // calculate the current index based on the target
-    var cur_idx = switch (target) {
+    const cur_idx = switch (target) {
         .Moving => 0, // start at the first number
         .Fixed => |index| blk: {
             // account for negative indices and clamp

tests/basic-1

@@ -0,0 +1,3 @@
+pc 1 23 40000
+↑    2200%    23x  [   1 → 23    ]
+↑  173813%  1739x  [ 23B → 39KiB ]

tests/basic-2

@@ -0,0 +1,8 @@
+pc 400000 123 12312412312312312 0 0 0 1 0
+↓             -100.0%             0.00x  [ 390.6KiB → 123.0B ]
+↑  10010091298226176%  100100915331072x  [     123B → 11PiB  ]
+↓               -100%                0x  [    11PiB → 0B     ]
+→                  0%                0x  [        0 → 0      ]
+→                  0%                0x  [        0 → 0      ]
+↑                inf%              infx  [        0 → 1      ]
+↓               -100%                0x  [        1 → 0      ]

tests/basic-3

@@ -0,0 +1,6 @@
+pc 10 11 200 2000 2000000 1999999
+↑     10%  1.10x  [      10 → 11      ]
+↑   1718%  18.2x  [      11 → 200     ]
+↑    900%    10x  [    200B → 2KiB    ]
+↑  99900%  1000x  [    2KiB → 2MiB    ]
+↓  -0.00%  1.00x  [ 1.91MiB → 1.91MiB ]

tests/basic-4

@@ -0,0 +1,7 @@
+pc 18024 19503 11124 12321 340200 424212 1000000000
+↑    8.21%  1.08x  [ 17.60KiB → 19.05KiB ]
+↓   -43.0%  0.57x  [  19.0KiB → 10.9KiB  ]
+↑    10.8%  1.11x  [  10.9KiB → 12.0KiB  ]
+↑    2661%  27.6x  [    12KiB → 332KiB   ]
+↑    24.7%  1.25x  [ 332.2KiB → 414.3KiB ]
+↑  235631%  2357x  [   414KiB → 954MiB   ]

tests/csv

@@ -0,0 +1,7 @@
+pc 50 1200 3432 23 0 0 --format csv
+percent,times,prev,cur
+2300,24,50,1200
+186,2.859999895095825,1200,3432
+-99.329833984375,0.006701631471514702,3432,23
+-100,0,23,0
+0,0,0,0

tests/delims

@@ -0,0 +1,4 @@
+echo "15@20@3 6" | pc -d "@"
+↑  33.3%  1.33x  [ 15 → 20 ]
+↓   -85%  0.15x  [ 20 → 3  ]
+↑   100%     2x  [  3 → 6  ]

tests/echo

@@ -0,0 +1,3 @@
+echo 100 2000 20 | pc
+↑  1900%    20x  [ 100B → 2KiB ]
+↓   -99%  0.01x  [ 2KiB → 20B  ]

tests/fixed-1

@@ -0,0 +1,4 @@
+pc 1 2 3 4 -f
+↑  100%  2x  [ 1 → 2 ]
+↑  200%  3x  [ 1 → 3 ]
+↑  300%  4x  [ 1 → 4 ]

tests/fixed-2

@@ -0,0 +1,4 @@
+pc 1 2 3 4 -f 2
+↓  -50%  0.50x  [ 2 → 1 ]
+↑   50%  1.50x  [ 2 → 3 ]
+↑  100%     2x  [ 2 → 4 ]

tests/fixed-3

@@ -0,0 +1,4 @@
+pc 1 2 3 4 -f -1
+↓  -75%  0.25x  [ 4 → 1 ]
+↓  -50%  0.50x  [ 4 → 2 ]
+↓  -25%  0.75x  [ 4 → 3 ]

tests/json

@@ -0,0 +1,2 @@
+pc 50 1200 3432 23 0 0 --format json
+[{"percent":2.3e+03,"times":2.4e+01,"prev":5.0e+01,"cur":1.2e+03},{"percent":1.86e+02,"times":2.859999895095825e+00,"prev":1.2e+03,"cur":3.432e+03},{"percent":-9.9329833984375e+01,"times":6.701631471514702e-03,"prev":3.432e+03,"cur":2.3e+01},{"percent":-1.0e+02,"times":0.0e+00,"prev":2.3e+01,"cur":0.0e+00},{"percent":0.0e+00,"times":0.0e+00,"prev":0.0e+00,"cur":0.0e+00}]

tests/raw-1

@@ -0,0 +1,8 @@
+pc 400000 123 12312412312312312 0 0 0 1 0 --raw
+↓             -100.0%             0.00x  [            400000 → 123               ]
+↑  10010091298226176%  100100915331072x  [               123 → 12312412812214272 ]
+↓               -100%                0x  [ 12312412812214272 → 0                 ]
+→                  0%                0x  [                 0 → 0                 ]
+→                  0%                0x  [                 0 → 0                 ]
+↑                inf%              infx  [                 0 → 1                 ]
+↓               -100%                0x  [                 1 → 0                 ]

tests/skips-bad-input

@@ -0,0 +1,13 @@
+pc --help | pc
+→          0%         1x  [        2 → 2       ]
+→          0%         1x  [        2 → 2       ]
+→          0%         1x  [        2 → 2       ]
+↓       -150%     -0.50x  [        2 → -1      ]
+↑  100000096%  -1000000x  [       -1 → 1000000 ]
+↓     -100.0%      0.00x  [ 976.6KiB → 2.0B    ]
+↑        400%         5x  [        2 → 10      ]
+↑        100%         2x  [       10 → 20      ]
+↑         50%      1.50x  [       20 → 30      ]
+↓      -33.3%      0.67x  [       30 → 20      ]
+↑       1005%      11.1x  [       20 → 221     ]
+→          0%         1x  [      221 → 221     ]